Alternator Shootout at Idle (136 vs 160 vs 250 amp)

Рет қаралды 110,421

4 жыл бұрын

I take 3 alternators, head to head at idle to show which one will perform better than the other at idle, and will also a 49mm alternator pulley on all 3 to see how much that helps to increase the voltage. I have been experiencing a lower than desirable voltage at idle ever since I installed the electric cooling fan for the radiator and the ATI super Damper with a 25% underdrive pulley.
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Пікірлер: 520

@TheRealMikeWilly 2 жыл бұрын

One thing I learned while working in auto parts, an alternator's amperage rating is given @ 2000 rpm. So when it comes to idle speed power production, all goes out the window, 160 amp alternator A will more than likely produce something different than 160 amp alternator B. Currently running the durango 160 amp alternator in my XJ and my volt meter hardly moves down off 14v even with my sub thumpin and my stereo blasting.

@jordantrujillo293 5 ай бұрын

That’s impressive, my XJ will drop from 14-12v with just the AC fan coming on.

@TheRealMikeWilly 5 ай бұрын

@@jordantrujillo293 the only way I can get my volt meter to hit 12v is by winching my Jeep up a long steep incline with 12-18" tall steps after blowing up my transfer case on the trail and getting no output to either axle, all the while runnin my instant pot to heat up dinner. 5000w power inverter + instant pot = everybody inviting you on every wheelin trip and offering to bring the food if you'll just bring the way to get it hot 🤣🤣

@chrclmnky 4 жыл бұрын

This video demo is absolutely genius. Gives me the courage to swap out my crappy mini van's alt and slap a higher amperage to keep up with the car audio demands.

@chrclmnky 3 жыл бұрын

@therockkkkher not yet but i am about to. Will post the video soon my channel. I will be using alternator from a Nissan Caravan NV350 150A alternator or from a Mitsubishi Pajero 110A alts. I already bought these two and will fabricate steel mountings. Really soon my channel.

@1.4tmechanicscruze61 3 жыл бұрын

what you need my good sir is a big v3/v4 kit its a bigger AWG depending on what accessories you have like for an example i have aftermarket accessories like 2 mini light bars 2 600w amps 1200w alpine subs wheel well multi color led lights upgraded msd coil pack for wider spark plug gaps (.035) the vehicle manufacturers are the cheapest bastards and with that being said they run thin gauge wires from your alternator to battery and even battery ground as well as engine ground so simple solution is before you replace your alternator buy a big v3 kit for YOUR TYPE of vehicle install the kit DONT replace factory wire just put your new kit wire typically 0-4 AWG over your existing factory wire this will save you time and money by not having to buy another alternator because more then likely the factory AWG isnt letting the alternator produce the electric capacity its really capable of 🤟🏼🤟🏼👌

@squirtmph 3 жыл бұрын

@@1.4tmechanicscruze61 Exellente point of view, allowed me to ask the questions & equipment Should I do Only 3 big as you had suggested nor alternator & 3 Big. I'm planing to hire a professional car Audio to do the job. 2018 CHEVROLET SONIC LT HATCHBACK 4 DR 1.4L I4 F DOHC 16V Amperage Output : 100 Amp ******"Equipment******" JL Audio VX600/1i Amplifier VX1000/1i Monoblock Class D Amplifier DRC-205 Digital Remote Control for JLid JL Audio 12W7AE-3Anniversary Edition W7 Series 12" 3-ohm subwoofer Focal PS 165 FXEPerformance Series 6-1/2" Maximum power: 160W Focal PC165F Flax 6.5” Maximum power: 140W Focal Elite Utopia M Tweeters Maximum Power: 200W Thanks 😊👍☕

@jefferyjulio4915 3 жыл бұрын

I realize I'm pretty off topic but do anyone know a good website to watch newly released series online?

@mylesfrancisco814 3 жыл бұрын

@Jeffery Julio lately I have been using flixzone. You can find it on google =)

@kanepua4796 4 жыл бұрын

Good info. Some things need to perform at idle, like A/C when stuck in traffic.

@stoichiometry147 4 жыл бұрын

Martin: Thanks for these videos, you've saved me a lot of time in R&D on my 4.7's. I'm glad my 49mm pulley calculations were correct. Seems the 160 has much better windings. I'll be employing your combo (AIRRAM/ATI, 49MM and 160). Keep these coming

@martinbuilt 4 жыл бұрын

Right on

@Bigv57thG 4 жыл бұрын

U are a life saver Been trying to find info on this but nobody did a video like this keep up the great work brother

@martinbuilt 4 жыл бұрын

Thanks, will do! Appreciate it!

@jth1987leb 4 жыл бұрын

Thanks. I need to get a new alternator. Now I know to get the 160amp and the smaller pulley. Great video

@ghssanalkhwyter9754 3 жыл бұрын

Many thanks for your simple and very good explanation and alternators tests

@garydwyer641 4 жыл бұрын

Thanks Martin that was very interesting as are all your videos I don't own a jeep but applicable to others. Keep up the good work and Hi from Australia.

@oscarcrespo9365 4 жыл бұрын

This is completely new in my knowledge. Thank you Sr. You are the man Sr.

@martinbuilt 4 жыл бұрын

Glad to help

@screamosux 2 жыл бұрын

This is a great video, very clear and concise, no gimmicks, and thorough in all the right places while trimming bulk in all the other right places. Don't change a thing. New subscriber 👍

@screamosux 2 жыл бұрын

Have you done any tests with upgrading the 'Big 3' vs OEM connections? I haven't been able to find any video showing the objective difference between stock and upgraded cables.

@martinbuilt 2 жыл бұрын

Thank you so much I really appreciate that and thank you for subscribing. 🙂👍

@klwflorida5438 4 жыл бұрын

Hey Martin thanks for your help earlier. I fixed my AC in an old jeep I bought. 2002 Overland. The compressor works fine! Just needed 134 a. Did the dye no leaks. Might be a small one at schrader valve. That all I saw. I was trying to find the low pressure sensor to jump it over but after recharge it works fine. Hubs and brakes r next! I will catch some more of your videos for that. Boy you r such a huge help. I have air tools too. Glad you are here!!

@martinbuilt 4 жыл бұрын

Glad it helped

@JohnAdams-lg3mh 4 жыл бұрын

Great work Martin, I was certain the 250 amp would be more than enough to level out the voltage, Glad you posted the video. Keep’em coming!

@martinbuilt 4 жыл бұрын

Glad you enjoyed it

@jkstdstang 3 ай бұрын

It wasn’t a real 250 amp alternator. Amazon junk.

@David-mu1wz 2 жыл бұрын

video very helpful. I now realize i fried my alternator driving city speeds with all accesories on plus a 1500w amp.

@squirtmph 3 жыл бұрын

Thanks for fine detail explanation & chill attitude. I had watched twice your post

@martinbuilt 3 жыл бұрын

Glad you enjoyed it! 😊

@mako757 4 жыл бұрын

Awesome video, Thanks for the shoot out!

@martinbuilt 4 жыл бұрын

Thank you, glad you liked it.

@symy3386 3 жыл бұрын

Very scientifically done. Great job and very helpful information. Thank you for the work you put into your videos.

@martinbuilt 3 жыл бұрын

Thank you!

@pallskrewee3091 2 жыл бұрын

Great video. As noted by another viewer, the slower rpm speed will have a dramatic effect on the alternator. Of course you proved that by installing a smaller diameter pulley. Also, the vehicles computer may also have an effect, the type of battery, & the age of the battery itself may have an effect. I had a 2015 Chevy cargo van that would cause voltage drops from the stock alternator. I called the dealership, asking if this was normal, & they said yes. I further inquired as to why, and it was explained to me that it was part of the fuel economy system. Certain times when I was going up a incline/ hill, the computer would cut off the alternator in order to reduce HP drawn on the engine, which helps with fuel economy. This would also happen with the air conditioner in the summer time. Also noted by another viewer was to perform the big three upgrade. Especially if you are installing a higher current output alternator. Your stock electrical wiring is generally rated for the current demands from the electrical system. Car manufacturers only give you what you need. Nothing more.

@letitrest4662 2 жыл бұрын

Thanks Martin. This is actually something I've been curious about, because I'm considering doing a cargo van conversion, with electrical system.

@martinbuilt 2 жыл бұрын

I'm glad you liked it and found it helpful 👍 😊

@SouthernKillafornia 6 ай бұрын

Great video and Mopar to boot. I killed my battery this past weekend running headlights, fuel pump and fans at idle waiting to get into a car show. You gave me plenty of great info.

@martinbuilt 6 ай бұрын

Thank you, I'm glad you liked it and found it helpful. Hope you did well at the car show.

@UltraCon79 2 жыл бұрын

Great video. I just put a chrysler 320 Amp 200 at idle JS Alternator on my 2.4L 2016 Jeep Renegade Trailhawk. I had a 160A stock but now my MPG has gone up from 32highway to 38 to 41 and my voltage is 14.3 at my cigar outlet with AC on max and fan running.

@hectorvega2163 2 ай бұрын

Awesome demo and general info on those alternator tests. Thanks 😊

@martinbuilt 2 ай бұрын

Thank you I'm glad you liked it and found it helpful. 😊

@adambatchelder4121 3 жыл бұрын

Good comparison. Your under drive crank is really hurting the output. Keep in mind that the alternators cooling fans are also turning slower, more heat

@travisc3571 4 жыл бұрын

Nice video Martin. This is Scott’s brother from Louisiana. I hear all kinds of martinbuilt stories. 👍👍

@toneseeker4968 Жыл бұрын

Oh Brother...thank you so much for this video! You just saved me a lot of money. I'm not a mechanic in the least, but I find myself in the market for a new alternator, knowing absolutely zilch about them. The video I watched here on youtube just before watching yours told me outright to buy the biggest alternator I can afford and not to worry about it, that it has no ill affect on my vehicle whatsoever. And, that way I would be prepared for any added electrical add ons in the future. I was shocked to see these results of your. It was like watching Goldilocks' Garage....not too cold, not too hot, but just right! Liked and subscribed...

@1ftintheflames 4 жыл бұрын

You may also try this with a multimeter on the alternator post. Ive found that any digital guages plugged into the obd2 port usually display lower than what the actual voltage output of the alternator is. Id check at the alt post, battery post and the input post of the junction box. Scan tools also display lower than actual voltage. Also anytime ive done a h.o. alternator i replace the lead from the alt to battery and to the junction box with heavier guage ofc wire like 2 gauge. That always seems to improve things. 8 and 10 gauge with fusible links can only allow so much current at a time. Great vid keep em comin.

@gordongman3423 4 жыл бұрын

Very interesting, thanks for the education Martin !

@martinbuilt 4 жыл бұрын

My pleasure!

@joeygee11 3 жыл бұрын

I use your videos for my 99 Jeep GC Limited 4x4. These are great!

@martinbuilt 3 жыл бұрын

Glad you like them!

@LolLol-sm7mt 3 жыл бұрын

Thank you so much for making this video so informative

@martinbuilt 3 жыл бұрын

Glad it was helpful!

@cactusjackdanels9829 2 жыл бұрын

Great video… I accidentally came across your channel and I have subscribed… Good stuff…Very informative

@martinbuilt 2 жыл бұрын

Thank you I appreciate that. And thank you for watching and subscribing.

@solarpanel9310 2 жыл бұрын

Very useful testing.

@martinbuilt 2 жыл бұрын

Thank you 😊

@JUKE179r 4 жыл бұрын

Thanks for this video. I've got a 2001 Land Rover Discovery 2 (L318) with a 4.0L Thor engine and a stock 120A alternator. A 2001 Land Rover Range Rover (P38) with a slightly bigger 4.6L Thor engine with a stock 150A alternator. Many Discovery 2 owners have stated that the Range Rover 150A alternator is adaptable to our Discovery 2s. Thanks for your experiments showing the differences. Cheers from a 'Murican in the UK!

@DarkLinkAD 2 жыл бұрын

Nice Buick

@DanDan-dn5lt 7 ай бұрын

Lots of efforts in this video

@steven6692 4 жыл бұрын

Thanks for the video. According a few wj owners the pcm quits regulating the voltage at some point...some of them even junked their wj's for not knowing what to do...but the few that kept the wj just installed a voltage regulator fixed at 14.3...but it has an adjustment screw on the back to increase or decrease...i bougth one from alternatormen...end of problem..cheers!

@martinbuilt 4 жыл бұрын

I will look into that, thank you!

@deantk4214 4 жыл бұрын

Great video Martin! I’d love to see a repair video on the blend doors, or one on how to repair the heated seats🤙🏼

@blasekaauamo756 3 жыл бұрын

Nice video. You could also upgrade your charging and ground wires to help with the load. I am into car audio and upgrading the charging and ground wires make a huge difference as well.

@martinbuilt 3 жыл бұрын

Thanks for the tips!

@Sip28 2 жыл бұрын

The wires should be thicker right?

@jpowens2253 Жыл бұрын

@joshsmith9 no, but it allows more power to be utilized more easily. It's like the difference of trying to breathe though a straw verses a paper towel roll.

@TheDirtyBirchTrails 3 жыл бұрын

Excellent research my friend !!

@martinbuilt 3 жыл бұрын

Thank you, Well appreciated

@phead3336 Жыл бұрын

great video man thank you for the feed back. i am a subscriber now

@martinbuilt Жыл бұрын

Thank you I really appreciate that. And thank you for subscribing.

@TheCthtoNicfLy Жыл бұрын

Wow that was really cool bro. Hell that's a lot of time for us.

@martinbuilt Жыл бұрын

Thank you i'm glad you like it.

@randyrawdingii5135 10 ай бұрын

Interesting about the idle speed... Getting ready to put an '04 Sequoia alternator in my '06 IS250. Thanks for the great vid! God bless...

@martinbuilt 10 ай бұрын

Thank you. I'm glad you liked it and found it helpful. Good luck with your upgrade.

@jaysonmartinez2830 Жыл бұрын

Good information! I wouldn't have thought the 160 would out preform the 250

@trevortrevortsr2 2 ай бұрын

I think the 160 is star wound and the 250 delta

@lyfestyleX 3 жыл бұрын

Great vid, just what I needed to know...

@martinbuilt 3 жыл бұрын

Glad you liked it!

@MichaelSmith-pf4eb 3 жыл бұрын

Great video. Thanks for sharing.

@martinbuilt 3 жыл бұрын

Thanks for watching!

@MrMr123 2 жыл бұрын

Great video, thanks for making it

@martinbuilt 2 жыл бұрын

Thank you I really appreciate that.

@rodom303 4 жыл бұрын

Thanks for the video I was just thinking about changing my alternator

@martinbuilt 4 жыл бұрын

Glad I could help

@Bigv57thG 4 жыл бұрын

Me too I got 7k watts im trying to feed.

@Bigv57thG 4 жыл бұрын

martinbuilt can I get a link on the 250

@martinbuilt 4 жыл бұрын

@@Bigv57thG and here is another link Eagle High Fits 250 Amp Alternator Dodge Dakota V6 3.7L 226cid 2004-2006 Dakota V8 4.7L 285cid 2005-2006 amzn.to/3dBWW7E

@davef.566 4 жыл бұрын

First put bigger charge wire on alt 4awg or bigger

@WanderingRobotStudio 6 ай бұрын

Doing the Lord's work.

@tomhurley974 3 жыл бұрын

very well done test thanks

@martinbuilt 3 жыл бұрын

Glad you liked it!

@alwaysbadideas Жыл бұрын

great video

@donsgotmoney Жыл бұрын

Excellent comparison, Ive got an older Chevy with a 5.7, my alt output with my a/c and electric fan on it pulls it down to 11.9 volts. Now I just gotta find at minimum a 130 amp alt, ive found a 200 amp, but have always thought that was to much anyways,

@akoswifter 3 жыл бұрын

thanks uncle..so that means im going to small pulley to my 120a upgradble altenator..done subcribed

@martinbuilt 3 жыл бұрын

Thanks for the sub!

@spiritzweispirit1st638 2 жыл бұрын

Greatly Informative and Soo Helpful! Thank You!🇺🇸👍

@martinbuilt 2 жыл бұрын

Thank you, glad you liked it.😊👍

@gmax341 2 жыл бұрын

Glad I ran into this video. Had the same issue when upgrading to a higher amp alternator. The idle performance was just horrible. With a full load it started to dip in the 10s with voltage. Accessories would sound slower and the all the lights on dash would flicker a bit if already illuminated (but was fine higher RPM). This was after I have done my big 3 upgrade. Luckily I still had my previous alternator and decided to slap that back in. 14 Volts across the board sometimes hitting 13. Returned the High amp alt and got my funds back. Not sure what my current alternator puts out as I had a shop replace my older one but just wanted a bit more amp headroom for the equipment I am running.

@Sip28 2 жыл бұрын

So you think 250 amp isn’t good?

@gmax341 2 жыл бұрын

@@Sip28 didn’t say that. I Probably had a defective alternator or wrong pulley size. Not to long ago I purchased a 200amp powermaster, so far so good! 96 E150 5.8l V8

@Sip28 2 жыл бұрын

@@gmax341 I had power master too but isn’t the idle amperage 130?

@gmax341 2 жыл бұрын

@@Sip28 yes that’s correct. My idle at warm is around 500-600rpm

@Sip28 2 жыл бұрын

@@gmax341 130 too low for me. I need idle to be be at least 180amp

@63hunter1 4 жыл бұрын

Thanks for all of your videos! I am soon to do the heads on my 02 dodge ram 1500 with a 4.7. I was just wondering the other day if I could upgrade the stock 136 amp alternator to a 160 amp with no problems. I think this answers my question. The reason for the upgrade would be because I have a warn M-8000 winch & it bogs down real bad when I use it. I have been binge-watching your videos so I can learn more about what is in store for me ahead. Hey, thanks a lot for the wealth of knowledge, you have made this back yard mechanic a lot more confidant. Just subbed.

@martinbuilt 4 жыл бұрын

Thank you, that is when you need a bigger alternator for those high amperage accessories like winches and audio system. The 160 should help out and you may what to install the 49mm pulley.

@theodoredelatorre6324 3 жыл бұрын

No vid.i like the approach not much not to lil...and great knowledge. Well laid out video...nice and smooth!!! Keep it up!!!

@martinbuilt 3 жыл бұрын

Thank you, I will, I appreciate that

@62ejo 4 жыл бұрын

Nice info Martin thxs......

@martinbuilt 4 жыл бұрын

No problem 👍

@HokieD1993 3 жыл бұрын

Ya, my ZJ has electric fan, stereo and the stock alternator can't handle it when I have accessories on. Thanks for the video. I'll think about a 160 and a 49mm for sure

@martinbuilt 3 жыл бұрын

let me know how it works out.

@demmerdesign6356 2 жыл бұрын

I swear I am not some shill for the company, but you have to check out Mechman alternators. I have a 6.0 Powestroke (with fully upgraded wiring for + and -) truck that absolutely eats alternators due to the plowing and really low idle / 3.5k maximum RPMs. Those things actually deliver real idle output and they even come rated and pretested at Idle and running speeds. I've installed them on every truck I own barring one junker van. Your video absolutely made me feel better about spending $500 on a 320 amp alt from them. Plus no need to run a smaller pully unless you wanted to.

@muzguz7276 3 жыл бұрын

Great video.

@martinbuilt 3 жыл бұрын

Thank you

@Dragon90815a 2 жыл бұрын

Good test.

@martinbuilt 2 жыл бұрын

Glad you liked it!

@82abn34 3 жыл бұрын

nice job!

@martinbuilt 3 жыл бұрын

Thank you 😊

@JohnSmith-ot9sc 4 жыл бұрын

Huh, that's interesting. I thought for sure the 250 would have given you the best results. Great vid as always 👍

@martinbuilt 4 жыл бұрын

Thank you! Cheers!

@larryfine4498 3 жыл бұрын

It's the way they wire the high amp alternators to get that amperage. Performs better at higher rpms, but at a cost to low rpm oerformance.

@larryfine4498 3 жыл бұрын

I saw elsewhere on YT that high amp (aftermarket) alternators get their amperage from rewiring the windings in the stator from series to parallel (or vice versa). High rpm performance is improved at the cost of low rpm performance.

@herlemaggard69 2 жыл бұрын

Depends what company, i just bought a 320a from autotech engineering that puts out 170ish at idle(650rpm)

@joegelencser2571 2 жыл бұрын

Awesome good job

@martinbuilt 2 жыл бұрын

Thank you 😊

@TECHNICIANIAM 3 жыл бұрын

Good video!

@martinbuilt 3 жыл бұрын

Glad you enjoyed it

@stevenhensley5060 2 жыл бұрын

I guess I think 4 things (great video BTW): your belt drive system is underdrive to start, none of the alternators perform well at 600RPM (luckily I don't drive at 600 RPM), and the 136 AMP was working hard under any circumstance, and I agree, the 160amp was best balance between $ and performance, although I am curious about reliability and life.

@TheAnonymous1one 3 жыл бұрын

Great Vid!

@martinbuilt 3 жыл бұрын

Thank you

@krasnalogrodowy38 4 жыл бұрын

Great movie! And as always inspiring, no one does it on KZfaq (!). But what about belt tension? Maybe it's worth starting a larger pulley somewhere else - to get the same tension? And I wonder what will happen adding a large capacitor (used for high power car audio amps). Great work, thanks!

@huf67 4 жыл бұрын

I had the same problems with my blend doors !!! Changed everything out and still had the same issues !! I thought I knew what that sound was... Had to laugh when you confirmed it. 😂🤣

@martinbuilt 4 жыл бұрын

yeah the previous owner had the blend doors replaced and they still do it, I've heard it is a Grand Cherokee thing. I just live with it.

@airborne63 3 жыл бұрын

Thanks. I have both a 130 amp and a 200 amp alternator for my Ford.....and neither put out enough at idle....in drive at a stoplight, to maintain the battery with 'winter' stuff on, like heater blower, headlights and defogger..... Will try the smaller pully.

@martinbuilt 3 жыл бұрын

Sounds good, it worked out good for me.

@dominickmonaco1237 4 жыл бұрын

Man I wish you lived in South Florida. Gotta change out one of my lifters, got a slight tick going on. Just changed the valve covers last weekend.

@mfslyphantom8811 3 жыл бұрын

Thank you for that, I’ve been upgrading these on different vehicles for years and never knew a 160 would ever outperform a 250 all things being equal (idle rpm). Never do the builders mention any of that useful info.

@martinbuilt 3 жыл бұрын

No problem 👍glad I could help.

@Sip28 2 жыл бұрын

Right wonder why is it the opposite?

@JuanGarcia-nl6ut 3 ай бұрын

I have been working for long time on alternator the hair pins has double stator plus very small pulley you can have good results

@ivanvujadinovic9905 4 жыл бұрын

Great video! It would be useful to make a table at the end with comparing avg. results for all 3 alternators on different loads :) Style Project Farm Thanks!

@martinbuilt 4 жыл бұрын

Great suggestion! I'll work on that and place it in the description.

@rexhepnikqi3946 3 жыл бұрын

GOOD TO KNOW MAN THANKS

@martinbuilt 3 жыл бұрын

No problem 👍

@MrLongshot762 3 жыл бұрын

From my understanding, alternator output is stated at 3600rpm. Idle will be dramatically lower hence the need for a battery. A battery is your fuel tank. Your alternator will replenish your battery while driving and do what it can at idle. A 160 alternator will output only 65-70 amps at idle with the stock pulley. Electric cooling fans can pull 30-40 amps alone. Really need that battery capacity to be available as much as an alternator ready to replenish it.

@cappaculla 4 жыл бұрын

very interesting !!!

@allensnook7760 4 жыл бұрын

Hey martin ,nice comparitive testing.iam owner of 2002 grand limited and it has the quad 2 /44 diffs in it.because it reguires friction modifers in it.what gear oil do you top off urs with.i really dont feel like a trip to dealership to get it done.plus with covid shutdown they might not even be open.dont have an issue just want to refresh fluids.!!all help appreciated.glad to see ur still putting out content.keep gearing snookie pa.

@Tombstone226 3 жыл бұрын

tech tip I have learnt it's not just voltage you look at but also amperage as well

@user-vu3xb7qn8g 4 жыл бұрын

Very cool.

@MaytagManstan 9 ай бұрын

Good video. Have you tried upgrading the big four?

@TerryManitoba Ай бұрын

This was just the video I needed to determine if my alternator was right for my van conversion. Thanks for that... I had a 30 amp bc/dc charger to charge my 220 amp lithium house batteries, I recently upgraded by connection in parallel an additional 40 amp bc/dc charger (both RedArc). Before turning on the chargers the at idle output was 13.8 v. With just the 30 amp bc/dc on the volts when to 13.6. With both chargers on volts when to 13.4 & is charging at 72.4 amps. I am assuming the alternator is sized appropriately? Right???

@billbird3833 3 жыл бұрын

Some alternators dont seems to charge untill a certain rpm. Say 1200 rpm, glad you tried the smaller pulley

@DarkLinkAD 2 жыл бұрын

Mr Electron

@barryodog 3 жыл бұрын

Lower voltage means more amps, that's why alt was so hot. putting out amps to get back to voltage set point

@MrPronav 3 жыл бұрын

Super! Thanks!

@martinbuilt 3 жыл бұрын

Welcome!

@rcadventure44 3 жыл бұрын

Great video. I'm looking to do the same

@martinbuilt 3 жыл бұрын

Thank you

@RANDOMNATION907 3 жыл бұрын

'Blend Doors' ..... gotta remember that one

@mosesromero6084 3 жыл бұрын

Great job thanks you explained to me in this video what I've been trying to do for awhile now one thing did you use the same serpentine belt if no what did you use

@martinbuilt 3 жыл бұрын

Yes I did but I should get a .5 to 1 inch shorter for the 49mm pulley

@mosesromero6084 3 жыл бұрын

@@martinbuilt alright thanks,good to know thanks for the info great videos

@reubenj.cogburn8546 3 жыл бұрын

Where was the AMPERAGE reading? Did I miss the critical unit of measurement ( as in the video title)?

@ahmedkamalalkamali6929 Жыл бұрын

Check the idle solnoid activity, check battery cells, clean all ground n earth sockets n contactors upgrade all grounds to higher gage wire , finally check or replace voltage regulator n the belt

@jasonbrown467 2 жыл бұрын

would be curious to see the actual current load on the system while turning those items on one at a time. i always thought 14.4v was what the alternator puts out, that is what all of mine are anyways. then the based on the load and the gauge of the wires versus the alternator's max current is at any given rpm will determine voltage drop. if your cables from the alt to the battery and ground are too small for the load the voltage will drop, and waste energy in the form of heat on the conductors.

@mondavou9408 2 жыл бұрын

The YT gods threw me your video. I like a lot of it. I think you could really improve your value to viewers if you summarized all your hard work and data collection into a summary spread sheet (similar to YT'r Project Farm).

@terik555 2 жыл бұрын

excellent

@martinbuilt 2 жыл бұрын

Thank you 😊

@vladisimus640 Жыл бұрын

Мужик молодец, полезный контент пишет!

@crunkwun 3 жыл бұрын

Alot of things need to be considered here. The 160a with small puller may keep higher voltage under load but the 250a will supply more amperage under load(depending what rpm that 250a is specified). If you're wanting more voltage depending if your alt is internally regulated then a couple diodes will fix that(15v+) or if you're externally regulated then you may have to look at an external regulator with the 250a alt.

@martinbuilt 3 жыл бұрын

The thing is by adding diodes or a resistor and trying to boost the voltage will not work at idle because the the voltage regulator is already telling the alternator I'm looking for 13.8 or whatever voltage if the alternator can't produce it at that RPM changing a voltage regulator or adding diodes or resistors will not make any difference in my case.

@crunkwun 3 жыл бұрын

@@martinbuilt so I'm guessing your alt is externally regulated.. you would need an adjustable external regulator then and yes.. you can adjust voltage to whatever you need cold start.

@dizzydezel9899 3 жыл бұрын

You should do a big 3 upgrade on you charging system wiring! With a larger alternator your bottle necking the power flow of the high out alternator!

@1.4tmechanicscruze61 3 жыл бұрын

exactly what i suggested that could save people a lot of money by not having to buy another alternator they could just install a big 3 kit a lot of people don't know about it and end buy a bigger voltage alternator and have the same problem basically your factory wire is not producing the electricity that your alternator can really put out DONT UPGRADE ALTERNATOR UPGRADE AWG lol

@SoldierNoodles 3 жыл бұрын

@@1.4tmechanicscruze61 where can I buy it

@alexanderk6512 2 жыл бұрын

thats not the issue here, its the low alternator speed. the only fix is reducing pully size. just because you have a H/O output alternator doesnt mean you will get higher voltage at low RPM. H/O alternators actually need higher speeds to reach their regulated voltage.

@mighty9100 2 жыл бұрын

@@alexanderk6512 but even if you reduce pully size and get more amps, the factory wire cannot support the increased amps. Upgrade the wire size. 1/0

@richhancock3110 3 жыл бұрын

I think that underdrive pulley really hurts your charging from your alternators wonder if the 250 amp would do allot better with correct speed compared to the 160amp

@weskirkland5850 Жыл бұрын

What I found out that pissed me off was it seems buying high amp alternators generally charge less at idle speed then your stock alternator. they charge more when wound up but idle speed is critical if you drive in any kind of daily traffic.

@pawbb6106 2 ай бұрын

great explanation, thanks so much ..!!!!

@joesam8113 3 жыл бұрын

Great demo video, I want to know by adding up more amp from the alternator will it effects the components Like Ac , high beam , signal lights and Radio. And other electronic parts in the car tq

@martinbuilt 3 жыл бұрын

Thank you, the alternator will not put out more amperage just because it has a higher amperage alternator it is only gonna put out what is required of the electrical system.

@heathcwalker 2 жыл бұрын

Awesome video. Did you take any RPM readings on the alternator pulleys themselves?

@martinbuilt 2 жыл бұрын

Thank you. No, I didn't take any RPM readings. The RPM is lower on my Jeep because of the 25% underdrive pulley on the harmonic balancer,

@messengerofiexist2139 3 жыл бұрын

All three alternators appear to be following the same pattern. The ECM may be controlling the charge profile based on the stock design. If that is the case then when using a high output alternator you’ll need to program the ECM to match it. With the 250 amp alternator, where is the excess amperage going? How many Amps are being produced at idle?

@smrtnz5995 2 жыл бұрын

Now that’s an apples to apples comparison with real charging issues scenarios. Great job! What was that nifty ratchet you used, gotta get me one. Thanks

@martinbuilt 2 жыл бұрын

Thank you, I really appreciate that. I'm glad you liked it and found it helpful.