Horsepower vs Torque, Which is Better

Рет қаралды 308,098

5 жыл бұрын

Horsepower vs Torque, Which is Better, how to DIY and car repair with auto mechanic Scotty Kilmer. The difference between horsepower and torque. Horsepower and torque explained. Why some cars have more torque than horsepower. Is it better to have more horsepower or more torque in your car? Torque and horsepower, how it works. What is horsepower? What is torque. Car Advice. DIY car repair with Scotty Kilmer, an auto mechanic for the last 51 years.
Thanks for watching!
⬇️Scotty’s Top DIY Tools:
1. Bluetooth Scan Tool: amzn.to/2nfvmaD
2. Cheap Scan Tool: amzn.to/2D8Tvae
3. Basic Mechanic Tool Set: amzn.to/2tEr6Ce
4. Professional Socket Set: amzn.to/2Bzmccg
5. Ratcheting Wrench Set: amzn.to/2BQjj8A
6. No Charging Required Car Jump Starter: amzn.to/2CthnUU
7. Battery Pack Car Jump Starter: amzn.to/2nrc6qR
⬇️ Things used in this video:
1. Common Sense
2. 4k Camera: amzn.to/2HkjavH
3. Camera Microphone: amzn.to/2Evn167
4. Camera Tripod: amzn.to/2Jwog8S
5. My computer for editing / uploading: amzn.to/2uUZ3lo
🛠Check out the tools I use and highly recommend ► goo.gl/rwYt2y
🔥Scotty Shirts and Merch ► goo.gl/pTAeca
Subscribe and hit the notification bell! ► goo.gl/CFismN
Scotty on Social:
Facebook ► / scottymechanic
Instagram ► / scotty_the_mechanic
Twitter ► Scottymechanic?la...
This is the people's automotive channel! The most honest and funniest car channel on KZfaq. Never any sponsored content, just the truth about everything! Learn how to fix your car and how it works. Get a chance to show off your own car on Sundays. Or show off your own car mod on Wednesdays. Tool giveaways every Monday to help you with your own car projects. We have a new video every day! I've been an auto mechanic for the past 50 years and I'm here to share my knowledge with you.
►Here's our weekly video schedule:
Monday: Tool giveaway
Tuesday: Auto repair video
Wednesday: Viewers car mod show off
Thursday: Viewer Car Question Video AND Live Car Q&A
Friday: Auto repair video
Saturday: Second Live Car Q&A
Sunday: Viewers car show off
►Second Daily Upload Every Afternoon of Live Car Q&A videos as well!
Scotty Kilmer is a participant in the Amazon Influencer Program.
#savagescotty

Пікірлер: 1 200

@scottykilmer 5 жыл бұрын

⬇️Scotty’s Top DIY Tools: 1. Bluetooth Scan Tool: amzn.to/2nfvmaD 2. Cheap Scan Tool: amzn.to/2D8Tvae 3. Basic Mechanic Tool Set: amzn.to/2tEr6Ce 4. Professional Socket Set: amzn.to/2Bzmccg 5. Ratcheting Wrench Set: amzn.to/2BQjj8A 6. No Charging Required Car Jump Starter: amzn.to/2CthnUU 7. Battery Pack Car Jump Starter: amzn.to/2nrc6qR ⬇️ Things used in this video: 1. Common Sense 2. 4k Camera: amzn.to/2HkjavH 3. Camera Microphone: amzn.to/2Evn167 4. Camera Tripod: amzn.to/2Jwog8S 5. My computer for editing / uploading: amzn.to/2uUZ3lo 🛠Check out the tools I use and highly recommend ► goo.gl/rwYt2y 🔥Scotty Shirts and Merch ► goo.gl/pTAeca Subscribe and hit the notification bell! ► goo.gl/CFismN Scotty on Social: Facebook ► facebook.com/scottymechanic/ Instagram ► instagram.com/scotty_the_mechanic/ Twitter ► twitter.com/Scottymechanic?lang=en

@kostya0812 5 жыл бұрын

Thanks cause I didn’t know what torque is.

@BaronBoar 5 жыл бұрын

I have to agree with the first poster in this comment section. If you get a V8 with a comparable displacement inline 8, the inline is going to produce more torque. Ford 300 for example, or the older Jeep 4.0 inline six. The problem with inline motors is there length, which is why manufacturers went to V8's. Imagine trying to fit a comparable displacement inline 2 cylinder into a harley frame, it would be super wide and would not look like a harley, but would make more torque. I am surprised a mechanic like yourself would forget these factors. The thing with the sports bikes and their inline 4's that have equal displacement as the V twins is that the 4's have smaller pistons lighter pistons allowing for more horsepower. The stroke of the motor too bends on torque. And engine with a longer stroke will produce more torque, where as a short stroke will allow for higher rpms equating to more horse power.

@BaronBoar 5 жыл бұрын

@@pantherplatform don't need to thank me lol, you were stating facts and I just elaborated on your facts. But you're welcome. 👍

@katrinahopkins1516 5 жыл бұрын

Hello Mr.kilmer, I really enjoy watching ur videos,u explain subjects thoroughly,.thankyou.

@BaronBoar 5 жыл бұрын

@Ocean Lives yeah computers can do a lot, but is difficult to get a motor to have equals amount of torque and horsepower, with out a lot of and ons like turbos or superchargers with the right programming. The Ford EcoBoost comes to mind with decent amount of both torque and HP. Subarus tend to be pretty equal too between HP and Torque.

@trentonhull5972 5 жыл бұрын

Rev up your Mitsubishi Mirage with 78 horsepower

@psuedozardozz 5 жыл бұрын

😝🤣

@vka_carvedsix0979 5 жыл бұрын

You're just mad my mirage is a 2018

@SteveSmekar-ll6ln 5 жыл бұрын

My 2000 Mirage (1.8) had 92 horse. Great on gas, but as Scotty says, "couldn't get out of its own way."

@oustenpruitt3484 5 жыл бұрын

I have a moped with 50cc does that count it wimpy so let me rev it

@scotty281976 5 жыл бұрын

In simple terms Horsepower is how fast you hit the wall and torque is how far you take the wall with you.

@riverhoneybee 5 жыл бұрын

Rev up your two-horse powered chariots with unlimited torque!

@chaztitan6457 3 жыл бұрын

rev you motor to the sky with 1gram of tq

@ajsalinas8418 3 жыл бұрын

BTW The average horse has 15 horsepower

@Darkalms 2 жыл бұрын

@@ajsalinas8418 so 1 horse = 15 horse

@justinspace1 5 жыл бұрын

At now 44 years of age and many cars/trucks under my belt I'm honestly embarrassed to say I did not know this. This guy explains things awesomely

@manasseh7 5 жыл бұрын

You learn something new every day

@smd2030 5 жыл бұрын

Why didn’t you ask 😂?

@justinspace1 5 жыл бұрын

@@smd2030 never occurred to me to do so lol.

@1CoLoRz2 5 жыл бұрын

Didnt explain it well. Hp is where your speed/acceleration comes in, torque is just how much you can tow. Torque is twisting force, while hp is how quickly/fast it twists

@pcfllms 5 жыл бұрын

IAN McB This is not to make fun of you by any means, but I find it funny that every middle aged - senior on KZfaq seem to have a profile picture of their dog! It’s so cute haha

@virenvs905 5 жыл бұрын

What's better? Torque or horsepower? I'll tell you what's better: A 94 Celica!!!!

@BmwMe-uh9sy 5 жыл бұрын

@ad356 5 жыл бұрын

that doesnt have much torque lol

@richdf5664 5 жыл бұрын

@@ad356 doesnt have much hp.either

@ad356 5 жыл бұрын

@@richdf5664 my 1996 Z28 camaro with 248K miles on it will blow its doors off LOL. the transmission was rebuilt and upgraded last spring. it had a high stall converter and a shift kit. other minor bolt ons and upgrades.

@richdf5664 5 жыл бұрын

@@ad356 ...yeah? You're comparing a built (wannabe) "muscle car" vs a completely stock economy car that's has ZERO intentions of speed. Cool. My twin turbo'd audi a6 has 191k miles with new bigger turbo's and a new(ish) clutch that will blow the doors off your camero

@Combine1331 5 жыл бұрын

Scotty, this is the first human friendly explanation of torgue vs horse power video I watch on the internet. Others are complicated, explaining this stuff with horses pulling boxex or very scientifically. It is amazing how simple explanation is the most effective way of learning new things in the beginning! Your video is knwledge extract for the people. Thank you!

@basithph8958 5 жыл бұрын

Horsepower means speed! Torque means pulls!

@InsideOfMyOwnMind 5 жыл бұрын

Just like amps x volts = watts rpm with torque = horsepower. Torque at zero rpm = zero hp. RPM with zero torque = zero hp.

@basithph8958 5 жыл бұрын

Gibbon that’s cool!

@angrysocialjusticewarrior 5 жыл бұрын

@Gibbon time to slap on a twin turbo and NOS in that bish!

@20yearsfromthepast 4 жыл бұрын

You are absolutely wrong dude. The pulling and accelerating is about "Horsepower" not the engine torque. If you can create same Horsepower in both cars, the acceleration and top speed is THE SAME. Just put same top speed gears on both car, you will get "SAME ACCELERATION". You wanna hear that again? " S-A-M-E ".

@alanartwww 3 жыл бұрын

You don't need high torque to pull. The Army proves this every day with the M1 Abrams. They have turbine engines.

@asianmanfromasia 5 жыл бұрын

Out of all the videos I’ve watched talking about hp vs torque. You actually made it make sense with all the analogies and examples. Thanks a lot 👌👌

@Hilmanpanjifirdaus 5 жыл бұрын

From various videos talking about the differences between torque and horsepower, your explaination in this video is the only one that nails it.

@johnbarron4265 5 жыл бұрын

Horsepower is the ultimate determinant of vehicle straight-line acceleration performance. An engine torque figure alone is meaningless without knowing the rpm at which it produces that torque. Engine torque can be arbitrarily amplified at the driven wheels through gearing. That being said, there is a positive correlation between peak torque and peak horsepower numbers on production cars. In order to make big horsepower, you usually have to make big torque (exception Formula 1, liter bikes, etc) because engines can only rev so fast before balancing becomes an issue, valve float occurs, or piston speeds exceed the combustion flame front velocity. Formula 1 engines push these limits and produce the most horsepower per ft-lb of torque of just about any engine. This requires very high engine speeds, which also rapidly accelerates engine component wear and drastically reduces the service life of the engine. In terms of longevity, engines with relatively high torque compared to their horsepower are superior. These engines typically operate at slower rotational speeds and are used in applications requiring long service life and large load-moving capability, for example in semi-trucks, diesel-electric locomotives, and tractors. In these applications, the horsepower produced is of secondary importance to the service life and reliability.

@alanartwww 3 жыл бұрын

True. Why don't the torque people understand this?

@lucasnahas Жыл бұрын

As an Engineer and a physics enthusiast, I couldn't go by without expressing my appreciation for the fact that your understanding of the matter in hand is very accurate. Cheers

@torevenheim9607 Жыл бұрын

When a engine have high torque (sylinder-filling) on high rpm it gets high hp

@moeriou8431 5 жыл бұрын

People apparently forget that transmissions exist when they say that torque is the acceleration force

@r-amores8173 2 жыл бұрын

Ikr

@lucasnahas Жыл бұрын

aye

@benjaminmoore4514 5 жыл бұрын

This has been a burning question on y mind for awhile. Thank you Scotty for answering this!

@BryanChance 5 жыл бұрын

This channel is fun. Scotty puts on a great show, practical advice for regular folks, engaging viewers and light hearted user comments.

@dusseau13 5 жыл бұрын

Now I know why my 1966 Cadillac was good on the highway but slow in town. It was a comfortable ride.

@akboomer2837 5 жыл бұрын

which is better depends on what you’re doing with the engine

@creamofbotulismsoup9900 5 жыл бұрын

It depends more on where peak torque is in the RPM range. For instance 300 ft/lbs of torque at 8000rpm will give you 456 HP but 300ft/lbs at 2000 RPM will only give you 115 HP... Horse power is the overall energy output of the engine, high revving engines with lower torque but the same HP as a lower revving engine can simply be geared down to achieve the same amount of force. Think of gearing down kind of like using a longer lever to lift something, less weight is needed to lift the same amount but you have to move it further, and the higher RPMs is the equivalent of moving further.

@hugeturd42 5 жыл бұрын

well just put a fucking transmission on it and only then the horsepower will be the only unit of measurement necessary, as you could make the gear ratio almost whatever you want to be, remember HP=torque x revs

@akboomer2837 5 жыл бұрын

Phlaked Corn so you’re telling me engines don’t make peak power at any RPM?!???!!!! And they need gears which effect the end result of their output?!?!?!?? Mind blown.

@creamofbotulismsoup9900 5 жыл бұрын

@@akboomer2837 What?! Man... I don't know what you read, but it sure wasn't what I wrote.

@OverlyCuriousEngineer 5 жыл бұрын

Phlaked Corn That was actually an excellent explanation. Thumbs up.

@eyesea123 4 жыл бұрын

This is the third video I watched on this topic and I finally get it clearly. Thank you.

@x78340 5 жыл бұрын

This type of video is GREAT!! You learn a lot like this. Thank you Mr. Kilmer 👍

@psychotrucker9880 5 жыл бұрын

Top fuel dragster 11,000 hp. 330mph in 1000 feet 3.3 sec.. now that's HP

@backwoodsjunkie08 5 жыл бұрын

I remember going to the dragstrip and watching them and as they go past the stands it will make the whole ground shake!

@snap-off5383 5 жыл бұрын

Not miles per gallon, but rather gallons per mile.

@snap-off5383 5 жыл бұрын

@InfiniteMushroom I was a kid when Kenny Bernstein broke 300 in 1/4. Now they do 298 at the 1/8th mile!

@davidstinson5095 5 жыл бұрын

Yeah and 100.000 big ones also

@snap-off5383 5 жыл бұрын

@@davidstinson5095 maybe to buy one, for fun, that when it blows up, you put it on the trailer and go home. To compete you need 4 complete cars or so. . . . consumables cost about $3500 every time it goes down the track.

@patrickzambori473 5 жыл бұрын

Torque and HP are apples and oranges, two very different things. Torque can be measured, HP cannot - it has to be calculated. Torque is best achieved by longer stroke, larger pistons, and more combustion pressures. Unfortunately, longer stroke makes for higher piston speeds which limits your RPM. If you want a lot of HP, you need the engine to survive higher RPM, which means a shorter stroke is better. HP relates directly to gas flow rate (cubic feet per minute) that you can get through the engine, so big intakes, big exhaust, big valves and big ports in the cylinder heads is where HP is made. There are a lot of compromises between big torque engines and big HP engines. Is the variable stroke and variable valve lift and valve timing the best of both worlds? What do you think Scotty?

@roidblitzed 5 жыл бұрын

Thanks for this comment. Very well said. I learned from it

@angelgjr1999 5 жыл бұрын

Yeah this is true. This is why many big American engines are limited to 6,000 rpm or below. And Asain cars can go up to 9,000 rpm. American cars can tow more, but have lower top speed.

@Matticus289 5 жыл бұрын

@@angelgjr1999 Completely inaccurate generality

@redtrek2153 5 жыл бұрын

It is true that the big push rod engines have more torque and less horsepower and are also lower revving, so American muscle fits the profile, but beyond that, it's a mixed bag.

@creamofbotulismsoup9900 5 жыл бұрын

HP can be measured just like Watts, just because a calculation is needed to measure it, doesn't make it any less of a measurement. For instance we use the term measured for the distances of celestial bodies in the universe, which can only be done through calculation. Now onto the subject of which is better, horse power is, plain and simple, horse power is the overall power output, and torque that is applied to the wheels can be infinitely increased by simply gearing down(think of it like using a longer lever to lift an object).

@A_man213 5 жыл бұрын

THANK YOU!!!! 42 yrs Old, I have read articles, watched videos, and YOU are the first person to explain HP/TORQUE so I understand.

@kingdaniel3519 5 жыл бұрын

This is about as layman as it gets. Torque is work and horsepower is how quickly you accomplish that work. If you generate more torque than power, then you can do a lot of work but you'll be slower to accomplish it. If you generate more power than torque you'll perform work faster but not as much at once. Hope this helps.

@A_man213 5 жыл бұрын

King Daniel well jeez thanks for making it simpler. I have only been waiting 42 years, sheewizLol

@Farsmezan 5 жыл бұрын

I really appreciate your explanation.. I am collecting data about cars and putting it in a database to decide which is the best car for MY needs and your explanation helps me to make sense of these numbers.

@skyhop 5 жыл бұрын

Torque always makes anything you drive on the street more fun and deceptively fast. Drive a semi without a trailer and skip gears sometime if you want to experience the ultimate demonstration of an extreme case, it's exceptionally fun.

@russellcoight1718 5 жыл бұрын

Tombs Clawtooth torque doesn't mean anything if the car doesn't rev fast.. a 500hp 300ftlbs car will feel quicker than a 200hp 500ftlbs diesel any day. Diesel is quicker from a dig however when both cars are at the same revs

@russbellew6378 5 жыл бұрын

Scotty, I'm pleased that you used a correct unit of measure (pound feet) for torque. (Many people incorrectly quote torque as foot pounds, which is actually a unit of work.) Good job.

@mazdarex7 5 жыл бұрын

A noble feat.

@Platyfurmany 5 жыл бұрын

Scotty, that's the best explanation of the difference between torque and horsepower I've heard on KZfaq!

@carlwheeler2774 5 жыл бұрын

Never knew the difference, but now I do, thanks Scotty! Good explanation.

@dario62589 5 жыл бұрын

Torque it's just a force measured in an specific moment, if you cannot apply it through time you're not going anywhere and thats what power is. Power = How fast you can apply certain force. In order to accelerate fast you need both!

@zacharyparis 5 жыл бұрын

Torque is how much work the engine can do. Horsepower is how fast it can do it.

@Draber2b 4 жыл бұрын

I would say torque is the force of the engine. Physically horsepower describes the work. The performance over time (how fast).

@milorad7226 4 жыл бұрын

zachary paris no no no and no Why does everybody stick to that lie? Engine torque(crankshaft torque) alone means nothing. Without rpm, you have no power. Same goes the other way. Horsepower + gearing determines the load you can haul. As it does acceleration. Or top speed. Seriously, this engine torque myths are going too far.

@Draber2b 4 жыл бұрын

@@milorad7226 Yeah Torque alone is not much. It is an important variable but more information is necessary. A hich torque is still really good (unless your car is light)

@milorad7226 4 жыл бұрын

D. Draber it is equally important as revs. If you don't have the torque, you'll have the rpm. Or the other way around. 100hp is a 100hp. One engine may have greater torque, but it will produce power in lower rpm. Other engine may not have high torque, but it makes it up with higher revs. Point is, both engines are capable of doing same amount of work, if their horsepower is equal, and ofc if fitted with appropriate gearing

@Draber2b 4 жыл бұрын

@@milorad7226 Well, I'm not going to argue* since that wouldn't make sense. We are talking about two physical quantities. It's just like deciding if sound or light, mass or weight is more important. Only when it comes to a specific situation (like transport) one might be more important. *I know I was the one who started.

@sjh60633 4 жыл бұрын

Learn so much from your channel. You do it in an interesting and entertaining way!

@bartdellinger5260 5 жыл бұрын

I have known the difference for some time, but not what the two mean for practical use. This is the best explanation I have come across. Now I understand. Great job Scotty!

@Shalloworldmx 5 жыл бұрын

I'm sorry but that is a bit misleading. A torque figure is "sort of" irrelevant (more on that a bit later) as you can have more torque with gear reduction, however, you cannot multiply HP as you can with torque. In reality, both HP and torque are two sides of the same coin, HP is how much work you can do with certain force (torque) during certain time (per minute for example). That said, while a torque number doesn't mean anything (you can have diesel engines with over 1000lb-ft and they don't accelerate that quickly) a torque curve is very important, a low end torque means there is lot of power available and ready to be used, and if we have constant torque, it means a constant HP build up, and thus, great and constant acceleration (as the case with electric motors, especially if we're not wasting time changing gears to work on a limited powerband). Now why is it irrelevant to think if having more hp than torque is better or vice-versa? If we measure torque in kg-m we almost always will have more HP than torque, it depends on the units we use. In conclusion, HP vs Torque? They're two sides of the same coin, we measure one to calculate the other, and given we can change the torque with different gearing, is better to focus on HP. A torque curve IS very important, as it can say if our engine will have enough power in the low end (as in a semi truck) and feel powerful and responsive or if it will have power in higher rpms (like some Japanese cars). And F1 cars can't put all the power without spinning their wheels, that's why they don't really accelerate that well from a stand point.

@richdf5664 5 жыл бұрын

You're trying too hard. This video isnt intended to create experts it's intended for people who drive a basic passenger car from A to B.

@Shalloworldmx 5 жыл бұрын

@@richdf5664 well... I guess you're right, it was just a rant from a random stranger on the internet.

@RepoDraghon 5 жыл бұрын

I like the saying, "Tq is what gets you up to speed but HP is what keeps you there..."

@1CoLoRz2 5 жыл бұрын

Wrong though

@richterman3962 5 жыл бұрын

Very very wrong

@russellcoight1718 5 жыл бұрын

RepoDraghon torque is what gets you off the line quick, HP is what accelerates you quicker after that.

@20yearsfromthepast 4 жыл бұрын

@@russellcoight1718 Nah dude, you are wrong. When average people off-ing the line, they are launching at low RPMs. And these people's car has High torque at low RPM, so it gives High HP on Low RPM. Thats why they are getting off line quickly. Torque is not power, its just a measurement of force at the crank. The "getting off line quick" thing measurement is HORSEPOWER. Because Horsepower allows more torque AT THE WHEELS. That gives MORE ACCELERATION because of HORSEPOWER.

@PiOfficial 2 жыл бұрын

So wrong

@VGB004 3 жыл бұрын

Thanks Scotty, so many other vids I tried to watch where over explaining both. You made it easier to understand and know. 👍👍😌

@alanartwww 3 жыл бұрын

..too bad its wrong.

@pbwiz1404 5 жыл бұрын

Scotty, I owned 2 each Ford Mavericks, a 1968 Chevy Camaro, 1970 Camaro, 1975 Camaro (with headers), 1984 Chrysler Laser 1979 Chevy Camaro Z-28(my favorite), 1987 Chrysler LaBaron(Pace Car Edition),1985 Chrysler Voyagerr van (inherited), 1995 GMC Jimmy, and w 2 each Oldsmoble Bravadas. The Bravadas are 20 plus years and going strong. Really enjoy your you tube channel Scotty and wish you many blessed years going forward. Your advice and wisdom have been a great help to me on so many things.👍👍👍

@fusion3d581 5 жыл бұрын

I always saw it as HP= torque x revolutions

@LZKS 5 жыл бұрын

It is.

@dario62589 5 жыл бұрын

Yeah, it's a force (torque) applied in certain time (revs per min). In other words how fast you can apply the force.

@ag135i 5 жыл бұрын

Revolution is constant i.e. 5252

@MrRobot-ry7ky 5 жыл бұрын

divided by 5252

@videomaniac108 5 жыл бұрын

@@MrRobot-ry7ky 5252.113

@lajuanwillis6175 5 жыл бұрын

I'm Torque Flexington and i approve of this video. Explosions!!!

@hazwell6811 5 жыл бұрын

I LEARN SO MUCH FROM THIS CHANNEL!!! THANK YOU, SCOTTY!!!!

@AlexK-vp9jd 2 жыл бұрын

Great simple explanation! Thank you! I applaud you!

@alexjrtony350 5 жыл бұрын

Gotta love the torque from a V8. My 94 Caprice launches pretty good for a 4,500 lb car because of 330 ft-lbs of torque lol

@thetman0068 5 жыл бұрын

Despite the inevitable lag from older injection systems, I was actually surprised with how much pep the dinky little V6 in my crappy old Taurus had. Definitely not impressive as far as high speed goes, but put your foot in a little and it really takes off compared to a lot of traffic.

@glennso47 5 жыл бұрын

If you really press the throttle from a standing start you can probably raise the front end off the pavement!

@wmc128 5 жыл бұрын

3L Vulcan had the torque of midsize pickup.186 ft lbs is nothing laugh at when your passing power on the highway was easy reached at 40 percent open throttle. Its slow engine (153 hp)but a reliable one.

@alexjrtony350 5 жыл бұрын

Also the GM 4.3l vortec V6 made 190HP but 250 ft-lbs of torque. My 2000 Astro also picks up pretty well.

@blurglide 5 жыл бұрын

Not the best explanation I’ve heard. An engine with half the torque and double the RPM (same hp) can be geared twice as low. At the wheels performance will be about the same because at any given speed, they produce the same force to the wheels

@murph55 5 жыл бұрын

blurglide, if that was true than you would see more gasoline engines in trailer trucks

@blurglide 5 жыл бұрын

@@murph55 It's a simplification, but largely true. The higher revving engine will probably have a narrower torque band (have to stay in the high revs to make torque), so relies more on shifting gears for responsiveness than throttle position. Also, as cylinders get bigger, torque naturally goes up and rpm goes down. Diesel also has a lot of advantages for a heave truck, and those tend to be naturally low revving for a variety of reasons.

@wyskun 5 жыл бұрын

I agree:) Finally someone understand how it works:)

@sfinder6969 5 жыл бұрын

That's really well explained. Thank you!

@harjasgulati984 5 жыл бұрын

This is the best explanation of horsepower and torque till date.Hats off to Scotty

@jeepin_jay 5 жыл бұрын

Torque is a twisting force. HP is that twisting force multiplied by the RPM it is twisting at. HP is arguably the more important number to worry about because it takes into account both torque and rpm in whatever you’re doing (racing, towing etc.) Think about what a transmission does. You can multiply torque all you want with a tranny but you can’t ever multiply HP without increasing the performance of your engine.

@richdf5664 5 жыл бұрын

Hp is almost never more important except for straight line top speeds. Tq is more important for basically every single other application

@jeepin_jay 5 жыл бұрын

Richard Conklin Disagree. I’m not saying torque isn’t important because it is but high HP is the number you want in just about every application. HP is a measurement of power which is the amount of energy made per unit time. Racing? Aka high amount of kinetic energy (speed) in a short amount of time. Towing uphill? Aka creating high amount of potential energy in a short amount of time? Maintaining top speed? Aka maintain a high amount of energy wasted in wind drag? Generators? Aka maintaining high electrical energy in a given amount of time? It all boils down to power.

@982678249 5 жыл бұрын

Horsepower is universal: 100 Hp is the same performance regardless engine type gasoline, diesel, electric etc (meaning that no matter on what rpm's that 100 Hp is produced regards to performance). Torque is not universal, the "strength" of torq is heavily related to the rpm it is produced: 100 units of torq is more effective on 2000 rpms than 1000 rpms. With a gearbox you can manipulate torq and rpm, but you cannot manipulate power that engine produces (power over gearbox remains the same). And afterall power = torq * rpm, so you really have them both always when engine is running. Speaking and comparing torques is fairly irrelevant (but layman terms more easily understand), because should be comparing max power and overall power curves.

@TonyRule 5 жыл бұрын

@Charles That's not an argument. Also, you're the one that is wrong. Torque at the wheels is changed with gearing down an engine with higher power. The power output doesn't change between the engine output and the wheels except for drivetrain losses. But the torque does - in every gear.

@donjohnston4215 3 жыл бұрын

Your so wrong it’s embarrassing.

@dismalfist 3 жыл бұрын

Watched three (no joke THREE) physics videos and didn't get the difference. Five minutes with Scotty and I got it. THANK you sir!

@raysharplessjr 5 жыл бұрын

Thanks Scotty.. very educational as usual

@System0Error0Message 5 жыл бұрын

I thought horsepower was a function of torque x revs. Engines are tuned differently, so the peak torque per rev is rated somewhere in the middle for most cars with lower down peak torque per rev for diesels and lorries that pull stuff, whereas horsepower is just torque (at the current rev) x rev. Engines use to tow with lower down torque also have a lower ratio gearbox and the speed between the engine and no movement is much much less versus lighter faster cars. A lot of lorries in countries that do not use the same big vehicles as the US, they tend to use the same engines as smaller vehicles, only coupled with a different gearbox and tuned for more torque at less revs so that when it starts off the line the less speed difference between the engine, transmission and wheels lets it move carrying heavy loads without destroying the crankshaft, transmission or drivetrain. autoexperttv explains horsepower as a function of torque x revs, i do like his explanation and he was an engineer as well, whereas you are trying to give an explanation that a non engineer can understand based on the different scenarios. Its also not necessarily true that a v config provides more torque, as an example the vw ute with the v6 outputs the same amount of torque as other engines but at higher revs so the numbers given if you look are the amount of torque at a higher rev. This makes the v6 look weaker than the straight 4 or 5 cylinder engines in both hp and torque. super/turbocharged engines also do make huge amounts of torque that increase their horsepower because of torque x revs, so these things also help engines tow with higher cylinder pressures giving more torque. Diesel engines are heavier in order to survive the bigger explosions for providing more torque at lower revs rather than higher revving engine that burn less per rev but burn more per minute than a low revving diesel engine with lots of torque.

@dulistanheman 5 жыл бұрын

Hey Scotty 😀 I can see your personality has Horse Power and Torque 💪

@tylerschaening9012 Жыл бұрын

Thank you for all that you do to bring information to the Masse's

@tch8787 Жыл бұрын

This is the explanation I was looking for

@towfer374 5 жыл бұрын

Can you explain how Horsepower/Torque all play a role with different gear ratios of the axle?

@wewill9032 5 жыл бұрын

Go back to school

@982678249 5 жыл бұрын

You can transform torque/rpm over gearbox ratios, but you cannot transform horsepower transferred over gearbox. I.e. That leads to on lower gear you get more torque but lower speed, and hp (over gearbox to wheels) is still the same that engine produces.

@MadProductionsink 5 жыл бұрын

In my experience of watching a million drag races, torque never made a difference, the car with more HP always wins. (With similar weight)

@alanartwww 3 жыл бұрын

You are right, and most people commenting are totally wrong. Torque is not a measure of power, and power=acceleration.

@jasontanner5886 5 жыл бұрын

This is probably one of my favorite videos of yours

@brendontait6968 5 жыл бұрын

Scotty is great at making good videos, however this video is filled with inaccuracies. So for entertainment he is great, for education around this topic... not so much.

@BasitKhan-eo5rn 5 жыл бұрын

Great video scotty thanks a bunch!!

@alexhickey5633 5 жыл бұрын

Horsepower is how fast you hit the wall. Torque is how far you bring the wall with you

@jorgeroque1995 5 жыл бұрын

NO REPLACEMENT FOR DISPLACEMENT (Coming from a guy that drives a 1.5L subcompact) lol

@Anth230 5 жыл бұрын

Whaaaaaat????? Let me guess....wife and kids???....☹️

@jorgeroque1995 5 жыл бұрын

@@Anth230 nah broke college student with no gf

@Anth230 5 жыл бұрын

@@jorgeroque1995 Oh...whew ...I was worried about you for a second.. 😉

@jimmytimmy3680 5 жыл бұрын

@@jorgeroque1995 Same but I drive a 1.7L. Haha.

@Vee_H. 5 жыл бұрын

Drove a 1.0 3 cylinder Ford focus. O regretted it. It was just simply a grocery go-getter

@clarkbreen4634 5 жыл бұрын

Very good explanation, thanks Scotty

@rummanac 4 жыл бұрын

Outstanding way of making people understand

@xliu37 5 жыл бұрын

Acceleration and terminal speed, both depends on HP.

@BuzzLOLOL 5 жыл бұрын

It's kind of a stupid question... appropriate gearing is used to balance each...

@dibaskar265 11 ай бұрын

Great explanation with examples 👍

@sdc303 5 жыл бұрын

So useful, thanks scotty!

@2000cobraguy 5 жыл бұрын

Torque can also be a measure of an engine's efficiency. At highway speed (on a gasoline powered car), you want the rpm to be near the bottom of the torque curve for the best mpg. Just my opinion.

@danield.7359 5 жыл бұрын

High speed is illegal, quick acceleration is not. Torque is more practical, can be a safety feature and hence is more important.

@elidames6889 5 жыл бұрын

In Arkansas you can be ticketed for "excessive acceleration". Whats worse isnt the ticket, its the cop trying to explain why

@elidames6889 5 жыл бұрын

"Well you may not have spun a tire, but you took off significantly faster than everyone else" In a retirement town of 2500 people, it isnt exactly a f&#$in feat to do lol

@danield.7359 5 жыл бұрын

@@elidames6889 he, he :-)

@angelocrisostomo7477 5 жыл бұрын

Excellent video, well explained by Scooty 👍😎

@13slot28 5 жыл бұрын

Fantastic video!

@albertrascon6274 5 жыл бұрын

Torque × RPM=HP, and torque is wheel turning strenght not acceleration.

@swagstag808 5 жыл бұрын

The f1 cars are so light that the torque they give out is well good enough for a sub 2 second 0-60 time... except the Williams...

@BaronBoar 5 жыл бұрын

Yeup but put that in a modern day full-size pick up.

@afonsoferreira5171 5 жыл бұрын

@@BaronBoar Why would you do that?

@BaronBoar 5 жыл бұрын

@@afonsoferreira5171 how about, why not put an F1 engine in a modern full size pickup truck?

@afonsoferreira5171 5 жыл бұрын

@@BaronBoar Because they were not designed for that purpose, the same way that if you put a truck engine in a F1 car it would not work properly.

@gravemind6536 5 жыл бұрын

@@BaronBoar The F1 engines are not at all reliable they have to change those engines every season and the expected lifespan of one put into a production car would be little more than 30,000 miles or a few years it stands no chance pulling a truck. Its 1.6 litre V6 it couldn't pull the skin off a rice pudding. An F1 car weighs about 1600-1700 lbs. Trucks weigh 5000 lbs.

@danielyoder1462 2 жыл бұрын

Great explanation on why the 2 measurements are relevant

@1erinjames 5 жыл бұрын

Great explanation. Thank you

@sammuel6253 5 жыл бұрын

So if more torque means more acceleration.. then how come diesels have less acceleration than their gas/petrol counterparts?

@LionWithTheLamb 5 жыл бұрын

Torque = Rotational force, Horsepower = Torque x RPM. Diesels don't normally have a low rev limit so they don't make much HP. While Scotty is correct, I don't care for the way Scotty explained this in the video (but it is rather hard to explain). You can have lots of torque and still be moving quite slowly. A diesel though will maintain speed easier with a load due to the torque that it delivers at that lower RPM. High horsepower engines may make a lot less torque at a lower RPM, but when they at the peak they are multiplying the output of that torque very quickly and that makes you go fast. Ofc gearing a low RPM, High torque engine can make it accelerate faster just like gearing can make a high hp engine have more torque at the wheels. This is why drag cars install lower gears into the vehicle to make up for that lost low end torque.

@alanartwww 3 жыл бұрын

The torque crowd can't rationally explain this because power=acceleration, and torque is not a measure of power.

@ericsalmazo481 5 жыл бұрын

Scotty, I am a mechanical engineer and today I'm sad to say that you, as 99,9% of people that try to explain what is the, let's say, practical difference between horsepower and torque, are wrong. I'll not try to explain it here and I do understand why you think what you think. Once, I did think like that too, because it is kinda of the intuitive idea. The only thing that I could ask you is this: if you have the oportunity, talk to a real engineer, someone that works with cars and really has some background on how car works and how maths and physics works. That person will say to you, without a doubt, that what you say in this video is actually not quite right. Wish you the very best.

@wyskun 5 жыл бұрын

I agree. This is not correct physics.

@mr.walkway9129 5 жыл бұрын

Yup...

@DrDreams23 5 жыл бұрын

Explain the truth. Now I am curious. You must feed my curiosity (please). Thank you.

@brendontait6968 5 жыл бұрын

@@DrDreams23 power is a function of torque. You can have a harley or a tractor with a lot of torque, but neither will accelerate quickly. If you take the hyabusa Scotty was talking about with high power it will accelerate significantly faster than the Harley. There is no way the harley will accelerate to any speed faster than the busa. Same with the F1 car, they accelerate very quickly, due to the high power. Additionally, a high power engine will tow a load up a hill faster than a lower power but higher torque engine provided you have adequate gearing. So unfortunately Scotty got pretty much everything wrong in this video. Power is torque at speed.

@firstnamelastname5540 Жыл бұрын

@@DrDreams23 Keep this “ LEARNING HUNGER “ going brother, never stop learning 💪🏼 🧠

@newandroidfan 5 жыл бұрын

Very well explained.

@leanangleza 4 жыл бұрын

This was brilliant!!!

@elvisisi77 5 жыл бұрын

A big strong man twisting a big nut with a 1 meter wrench with a pressure of 100 newton for example, that’s a 100 nm of torque, like a Harley. A smaller man twisting the same wrench for shorter, weaker strokes, coz he’s not as strong, but can twist again and again fast, that’s a Honda cbr 600 :)

@trbossdoggy 5 жыл бұрын

Need a 1.0 V12 with 180 horse power 🐴

@oludiranjohn4712 5 жыл бұрын

Wow This is the best explaination of torque and horsepower I've ever heard. Those physics explanation were just too complicated. Thumbs up Scotty👍🏻👍🏻

@wyskun 5 жыл бұрын

This is not correct physics what scotty said

@SmallMartingale 5 жыл бұрын

Thanks, Scotty!

@joemikey278 5 жыл бұрын

My 1986 YUGO has 54 hp, 56 lb-ft of torque. In Relation to this whole video, I still don’t know what exactly I can expect, better acceleration, or higher top Speed? Technically, I do have more torque than horsepower !!!!

@russellcoight1718 5 жыл бұрын

Joe Mikey If you raced a car with 30hp and 100lb-ft That car would accelerate quicker off the start line ONLY while you have equal revs, as it's making more torque, so with equal revs it must have more hp. However as the race goes on and you build up revs, you'll have more horsepower and your engine will be doing more work hence overtake the other car. How he explained it is confusing.. high torque is very good for getting off the line but doesn't always correspond to top end acceleration.

@drienkm 4 жыл бұрын

"Technically, I do have more torque than horsepower" this is like saying I have more weight than height. No sense made. Scotty is great, but like sooo many he doesn't understand power at all. Power determines all things relating to going forward - acceleration, top speed, towing ability and hill climbing ability. Torque is part of how an engine makes power.

@Vee_H. 5 жыл бұрын

I always wondered why buses had low horsepower, but still could still keep up in traffic with 50 or so people onboard. Now I know.

@Dankcatvacs 5 жыл бұрын

not always the case look up gasser buses 6.0 400 small block , not bast because of Gearing! scotty completly left that out

@lastpally 5 жыл бұрын

Like my semi. Around 2000 lbs/ft between 1100-1500rpms yet has like 400hp. It needs a 10 speed transmission to travel down the road at 65mph. Gearing play an massive role in a vehicle.

@drienkm 4 жыл бұрын

Well no. Those cars are only using something like 15-40 HP to accelerate when just commuting around on city streets. A bus is using most of it's 200-300 HP when accelerating.

@johnmajkowski7200 5 жыл бұрын

Hi Scotty, excellent video thanks for an understandable explanation of the difference between horsepower and torque. My questions is I've seen guys talking about how adding more horsepower to a Subaru STI takes all of the torque out of it. Is this true? Can you explain how modifying the Subaru turbo boxer engine to deliver more horsepower would result in less torque? Thanks

@gpenny2163 5 жыл бұрын

This best subscription i have & I own Lexus that all I’ll buy And especially after listening to you thank you 😊!

@realShadowKat 5 жыл бұрын

You buy horsepower, you drive torque.

@mattynoordberg1698 5 жыл бұрын

Well spoken

@kbdadriftking 5 жыл бұрын

Not true because a car with 200 horsepower and 150 torque will always be faster than a 150hp 200 torque ..on initial hit that torque will jump a tiny bit bit once you get in that rev range.....

@1CoLoRz2 5 жыл бұрын

Completely wrong. Think of torque as a twisting force, and hp is how quickly/fast it can actually turn.

@1flynlow 5 жыл бұрын

except a car with 150 hp and a car with 500hp can both turn at the same rpm (speed).. so

@geoffjefferson5571 5 жыл бұрын

Torque: is a sumo wrestler pushing his way through a crowd and horsepower: is a bag snatcher running away with the handbag.

@richdf5664 5 жыл бұрын

Tq is the reason you get pulled back in your seat as you accelerate 0-60 in 3.5 seconds. Hp is why your car can keep going to 150+ mph

@ceesaydesignsolutions 5 жыл бұрын

Further Mechanical Principles...good lesson!

@Jonathanalknas1 5 жыл бұрын

Very nice video! Thx

@Twobarpsi 5 жыл бұрын

All engines, *ONLY* make torque, not horsepower. Horsepower is a function that calculates how much TORQUE an engine makes per unit time. High torque engines, have longer bore strokes, which makes a lot of low end torque. All piston engines, are limited to a certain *piston speed* . High torque, long bore stroke engines reach this high piston speed *much sooner* than short stroke, high hp engines. The secret to big HP, is to make your peak torque, higher in the RPM band. The trade off being, low end torque production suffers. This trade off can be helped, by engine configuration (V vs inline, or number of cylinders), forced induction, and by using steeper *gearing* .... Gearing, combined with a high revving engine, is why a Hayabusa and F1 car, can accelerate so fast, with relatively LOW torque production.

@Twobarpsi 5 жыл бұрын

This is a very short, rudimentary explanation, but I look forward to the comments!

@mazdarex7 5 жыл бұрын

Twobarspi, you gave too much logical info, so now the street fight will happen between the fast and the curious LoL. Name of their drama: Wes side sorry story Thanks though, for being factual, dude.

@Twobarpsi 5 жыл бұрын

@@mazdarex7 thanks 🍻👍 !!

@mazdarex7 5 жыл бұрын

@@Twobarpsi we will now be attacked for being "square bores"

@Twobarpsi 5 жыл бұрын

@@mazdarex7 😂😂😂😂

@martialman.4563 5 жыл бұрын

Great explanation.

@cloviscareca 5 жыл бұрын

Thanks Scotty. You're awesome

@PasiemuKasMano 5 жыл бұрын

So practically high torque engines (diesel ones and powerful pertrol V8s) are better than high horsepower in a daily city driving, correct me if i'm wrong

@Josh-cw8by 5 жыл бұрын

You're correct. Torque helps low speed acceleration which is mainly what the city is.

@KekusMagnus 5 жыл бұрын

high torque engines are better for carrying heavy loads and doing a lot of stop-and-go motions. for city traffic in a truck, then yes, but for a light car you don't need a lot of torque

@JohnSmith-vn7vk 5 жыл бұрын

Welcome to Europe with their diesel car trends ---> 150hp ~ 400nm/torque

@Jamie-cz2xu 5 жыл бұрын

I will correct you because you are wrong, Higher torque in stop and go traffic is just gonna make you smash your head on the steering wheel 20 times before getting to work because you will have a very jerky ride stoping and going with so much torque. A car with more ponies will give you a smoother ride and that will be far more relaxing to drive to work in

@AR-zq9hq 5 жыл бұрын

@@Jamie-cz2xu smashing your head on the steering wheel has nothing to do with engine output numbers but rather with your throttle control skills.

@bloodethirteen 5 жыл бұрын

I love your videos scotty but i believe @engineeringexplained had done a better job discussing this topic.

@timothylanders3189 Жыл бұрын

Fantastic explanation Scotty ;)

@MrSanketraut 5 жыл бұрын

Very informative video

@aliendroneservices6621 5 жыл бұрын

0:42 "torque is [...] power" No. Torque is not power.

@theoriginal_sb7045 5 жыл бұрын

this breaks my heart to say this but a busa is a 1300 not 1200

@mcplutt 5 жыл бұрын

You broke my heart too :-)

@alanartwww 3 жыл бұрын

...also, it can accelerate faster than any v-twin.

@747Durango 5 жыл бұрын

Scotty, thanks for the explanation. Very well done. I've never read so many clueless comments.

@brendontait6968 5 жыл бұрын

Except it was mostly false.

@747Durango 5 жыл бұрын

@@brendontait6968 Really. Feel free to enlighten us then.

@brendontait6968 5 жыл бұрын

Horsepower is torque at speed. A high power F1 car will out accelerate a slow revving high torque muscle car. Just like the hyabusa will out accelerate the harley to any speed given enough traction etc. Power is the speed that an engine can produce torque at. A high power engine will accelerate faster, have a higher top speed and be able to haul a load up a hill faster given appropriate gearing and traction than a comparitivly low revving and high torque engine. The gearbox in a vehicle increases torque at the wheels, the faster the engine turns, the higher gear ratio you can get and the higher the torque at the wheels at a given speed. As much as I don't like the guy, engineeringexplained does explain it quite well. Also check out autoexpert if you are interested. Scotty is entertaining to watch and listen to, but doesn't seem to have a good understanding of physics.

@68erfan 3 жыл бұрын

very simple and useful

@DaveBuildsIt 5 жыл бұрын

Harley Davidsons have to have a lot of torque to tow the load. Have you seen the size of the men and women that ride them?!? I've gained 20lbs in the last year that I've owned one.