Spark Plugs: Which heat range to buy and why.

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Күн бұрын

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Пікірлер: 77

@christianmiller9039 6 жыл бұрын

Danny, you have a wealth of knowledge about these cars man... I thought I knew a good bit about cars and performance, but every video you make teaches me something new. I appreciate the time you took to make this!

@dannyjohnsonsgarage 6 жыл бұрын

Thank you for the comment. I deeply appreciate your feedback and support as you watch the videos

@72marie 4 жыл бұрын

I save all the good informative videos. My roommate and I changed the oil, drained radiator ,sucked out the power steering fluid and put in a thermostat & new radiator cap. I know that is considered easy to do but it was satisfying being a female and working on my own car. My roommate and I had no prior experience so it took us until midnight:)

@johnnybauer8552 2 жыл бұрын

Like your video. Just like to point out that NGK and BOSCH have different numbering systems to determine spark plug temperatures. NGK uses lower number = hotter. BOSCH uses lower number = colder.

@marchallaert7372 3 жыл бұрын

Very informative. Thank you!

@kemosabegt350geuss6 3 жыл бұрын

Motorcraft/Autolite the lower the number the colder. NGK the lower the number the hotter.

@ProjectMercuryMarauder 5 жыл бұрын

I drive a 2003 Marauder that has the factory specs the same as your Mach 1 with the .054” but from what I have seen there a little bit more happier with .050“-.051” gap and that’s without any major power adders

@jamest.5001 4 жыл бұрын

Indexing the plugs where all the ground electrodes face the same part of the cylinder can help prevent fouling with cold plugs, or detonation with boost or high compression, preventing hotspots, in old Chevy's I put the ground tward the exhaust valve, the open side to the center of the bore!

@darrylm3627 2 жыл бұрын

Great Tips,Good Stuff😄👍🏿

@Orangelemonblue 5 жыл бұрын

Thanks...i needed to watch this video

@urenaanthony91 Жыл бұрын

Thank you!

@johnc7431 2 жыл бұрын

Great video enjoy your knowledge I have a 302 naturally aspirated I'm trying to find the right plug over the weekend put nitrous on it still trying to find a ride plug to run any suggestions would be good

@captain052A 6 жыл бұрын

Excellent video

@dannyjohnsonsgarage 6 жыл бұрын

Thanks for watching. Glad you enjoyed it

@jamest.5001 4 жыл бұрын

The insulation contacting the the inside of the threaded part determines heat, more contact more heat sinking in to the head!

@jamest.5001 4 жыл бұрын

A colder plug can foul the plug, if at idle alot, and low rpm in town use .

@Will.GM11 4 жыл бұрын

I have a 2011 Silverado V8 flex fuel with headers and mild cam. What do you think I should run

@MrChocolatethunder45 5 жыл бұрын

I have a 350 CUI w/a 144 B&M blower, what number cold number do you recommend, 7, 8?

@melodyscottland8316 8 ай бұрын

hey danny great video i have a 93 civic dx 1.5 non vtec can i use hotter spark plug i only drive it for work and what the normal gap is .028 or .030 let me know thanks.

@dannyjohnsonsgarage 8 ай бұрын

I would use factory spec and heat range

@DrConvicted Жыл бұрын

Hey Danny. Good video. If my car is running too rich and I’m using a ngk bkr9eix for a stage 3 tuned. Do you suggest I go hotter like a 8 or 7 ?

@dannyjohnsonsgarage Жыл бұрын

If it’s running rich it’s the tune you need to adjust or it will foul whatever plug you’re using. The only exception would be if you’re not getting a good burn from spark plug blowout from a boost application (supercharged/turbocharged) in which you’ll want to gap the plugs tighter. A colder range plug can make the car run tough until it’s warm. It’s only a must when producing a huge amount of heat kzfaq.info/get/bejne/qtJ2fKx2t5aycZs.html

@willardleap1289 5 жыл бұрын

So basically a lower horse power engine would like a hotter plug to burn off carbon deposits do to the engine running cooler compared to a supercharged or race engines which run hotter so with those you want a cooler plug so that the plug doesn't melt.

@dannyjohnsonsgarage 5 жыл бұрын

Willard Leap Yes, that’s the basic principle. Now, there could be exceptions like a turbocharged car that lives in Alaska where it’s super cold or something like that

@MrNopehaha 4 жыл бұрын

@Danny Alldata stated for my car the plug gap is .044", but then it stated if removed to clean, gap them to .051" Why would it tell me to gap it farther if removed to clean and how do you safely clean a spark plug?

@cuda4094 4 жыл бұрын

@@dannyjohnsonsgarage What about a 2 stroke engine? What is the best heat range?

@motomaniac-enduro 5 жыл бұрын

Hey man! Great video, but I have 1 question. What do you mean increase ignition timing to make more HP? Does that mean that it ignites a bit sooner or a bit later? Thanks!

@dannyjohnsonsgarage 5 жыл бұрын

See my video on Ignition timing. It will shed some light on it. kzfaq.info/get/bejne/iLmDh8KmybWRZ58.html

@johnnybauer8552 2 жыл бұрын

Adding timing will increase power if your car/engine will take advantage of it. e.g. if you have decreased the weight of your car you may benefit from increasing the engine timing. Where and when of the engines RPM range is a nother story.

@CalaisRider 5 жыл бұрын

Maybe I'm mixed up. A lower number is a HOTTER plug - is that right? My engine is n/a modded and big compression ratio due to the cnc ported heads but not forced induction, but it's plagued with ping/knock.

@dannyjohnsonsgarage 5 жыл бұрын

Lower number will retain heat, higher number will vent heat. The plug spark is the same. If you’re getting ping, try more octane or less timing in the tune

@jamest.5001 4 жыл бұрын

Not all heat ranges go hi cold low, hot, some are reverse, a ac 42 is fridged, a 45-46 would be in a truck or something, a 44 in a camaro or something more performance,

@kraigkern 4 жыл бұрын

I can’t believe I just watched this on a Friday night. 😩 But it was fascinating. I just received a JB4 tuner for a Kia Stinger GT2 (3.3L twin turbo). Two step colder with a .020 gap is what I want to run. Do you agree?

@dannyjohnsonsgarage 4 жыл бұрын

Kraig Kern You shouldn’t need to gap them that tight for just a tune. How much more boost over factory?

@kraigkern 4 жыл бұрын

Danny Johnson hey man, thanks for the quick reply. I’m not a complete newbie, but pretty close. I’d be running Map 2 for 93 octane. Gaines should be another 5 psi boost over stock. Pushing it +75 HP /+100 FP respectively. At least that’s what their marketing says. There’s a lot of misinformation out there so I was going by Burger Motorsport’s own website for the Denso plugs. Here’s what it says. “We suggest the Denso 5347 high performance spark plugs for aggressively tuned 3.3L applications gapped to 0.020".”

@dannyjohnsonsgarage 4 жыл бұрын

Go with their recommendation.

@kraigkern 4 жыл бұрын

Danny Johnson for what it’s worth, I tend to agree with you. I would think no more than .024-.026. Terry Burger just wrote back, .022 is his recommendation. Still tight but better than .020. Thanks again. Great channel.

@mrvang8077 2 ай бұрын

What if your engine produces a lot of heat for a naturally asperated engine? Would it be best to go to the colder spark plug?

@dannyjohnsonsgarage 2 ай бұрын

You can try them but see how it effects idle when warming up

@efrensaclolo7021 4 жыл бұрын

I noticed the gap of a colder plug is narrower than the hotter plug. Is there an explanation to that?Also mostly on Imodium plugs.

@dannyjohnsonsgarage 4 жыл бұрын

I can only imagine it helps when the engine is cold as I hear the cold plugs can cause a rough run until warmed up.

@efrensaclolo7021 4 жыл бұрын

@@dannyjohnsonsgarage On a stop my idle is not very smooth,But On a start up it is very smooth until it warms up and start shaking slightly.This happens intermittently,so I just ignore it for years now.

@mjolly3024 6 жыл бұрын

I have a 98 Lincoln mark 8 lsc with c heads from a 02 continental, my thing is this after I let the car warm up about 15mins every morning so that is sitting right at opt. temp for that 30 minutes of driving the car feels powerful like it was brand new, yeah I would give it the beans on and off but the car felt good. After that it seems like if I stop somewhere like to get some coffee or gas she seems not so powerful but average, why do you think that is? I blamed the motorcraft platinums getting to hot, there is no knocking, no CEL, or hesitation. Was told could be the trans getting hot to quick but I digress also after a good run the car would start weird like quicker then normal which makes me think the cylinders are too hot, I mean I would barely turn it over and it would start at a low rpm of the starter, it always starts though. I run 93 octane my motor calls for 91, my trans is a 4R70W with trans cooler not being ran thru radiator , I run 5w30 thru it, and 3.27 gears out back, just trying to get an idea about it

@benson4u215 6 жыл бұрын

M Jolly 302 motorcraft plugs are honestly hit or miss nowadays

@tillman40 5 жыл бұрын

Sounds like when it gets hot in the engine bay the motor pulls timing out. I found that ditching my metal intake and using a better vented hood seemed to help

@dsruddell 4 жыл бұрын

sitting idling for 15min is too long to warm it up. a minute or 5 max is all you need.

@jamesm.8392 4 жыл бұрын

IMO . . . Space out your hood. You will have 60F cooler temps under the hood. 4 one inch thick nylon spacers and 4 longer hood hinge bolts. Pull the rubber gasket where the back of the hood meets the firewall Change it back in the winter.

@efrensaclolo7021 4 жыл бұрын

I noticed the new motor craft platinum has .030 gap compared to old platinum which is .050 gap.But I don't notice any difference on my truck .It even runs smoother with .030 gap.Anyone out there who can explain that?2004 Expedition 4.6 two valve 8cylinders.

@harrisjr9849 2 жыл бұрын

Why is plugs wet with fuel i took ac delco out put egk 350 engine it runs great let run 3min top cause in garage but when check plugs wet with fuel can u explain why thanks

@dannyjohnsonsgarage 2 жыл бұрын

If the plugs are wet they may not be firing

@harrisjr9849 2 жыл бұрын

@@dannyjohnsonsgarage how is it running good one Guy ask me am i letting it warm up to operating température hé Said im not running engine long enph is that possible

@1alex1311 3 жыл бұрын

Hey Danny, if that wasn't iridium what was it, silver?

@dannyjohnsonsgarage 3 жыл бұрын

Usually copper

@Joe-rx7ht 3 жыл бұрын

I have a 1999 SVT Cobra with 80K miles. I recently bought new Motorcaft spark plugs from my local Ford dealership, but they are 9 thread plugs. The plugs currently on my Cobra are 4 thread. I’m afraid to put the 9 thread plugs in my engine, since nobody seems to carry the 4 thread plugs. Will the 9 thread plugs hit my pistons? I’m stuck not knowing what to do. Can anybody advise me on the correct spark plugs to use on my 1999? Thanks in advance.

@dannyjohnsonsgarage 3 жыл бұрын

Yes, they are fine. The plug stops when it reaches the last thread in the cylinder head so it doesn’t matter how many threads are on the plug. It won’t hit the piston as long as it gets tight after about 4-1/2 full revolutions with a ratchet kzfaq.info/get/bejne/brKBdpuJvajQYo0.html

@Joe-rx7ht 3 жыл бұрын

Thank you, Danny. Much appreciated. Ford actually sold me the wrong spark plugs. They were for a 16 valve, GT motor. I guess they’re a different part number than the 32 valve, Cobra engine. I pick up my Motorcraft spark plugs and 8 new coil packs from a local parts distributor tomorrow. American Muscle is actually sold out of spark plugs at the moment. Cheers.

@1siksn95 6 жыл бұрын

I just switch to NGK a day or two ago. Huge difference with power!

@dannyjohnsonsgarage 6 жыл бұрын

+1sik sn95 nice. I do enjoy these plugs. Been running them for awhile with no issues

@willardleap1289 5 жыл бұрын

Me too. Ngk rules!

@efrensaclolo7021 4 жыл бұрын

Just saw in KZfaq that there are fake NGK laser iridium you buy from eBay or Amazon and I think I have it because it cost me $14.99 for set of 4 that is regularly $13 each at Autozone. I wondered if this is fake.

@jamesm.8392 4 жыл бұрын

I am waiting for a set of 4 now . . . and I Am Ready To Pounce. This crap has been going on . . . For YEARS. No Excuse.

@funcars_ 4 жыл бұрын

14:42 info on spark plug gap

@dannyjohnsonsgarage 4 жыл бұрын

Bryan Villavicencio Depends on your application. Boosted cars should gap down to avoid spark plug (flame) blowout. I run .028, but that’s certainly too tight for n/a applications. Research what your application suggests

@funcars_ 4 жыл бұрын

I’m wondering what is best for my application I do mess around sometimes I have a 2001 Ford Mustang Roush 3 supercharged at 6psi and I do feel a cut of when I switch gears at high rpms I was thinking about the TR6 gapped at .030

@dannyjohnsonsgarage 4 жыл бұрын

Bryan Villavicencio That would be fine, even a little tight for only 6psi. If it’s cutting between gears it’s probably not the plugs, but more likely the pprv valve in the fuel tank. Try keeping the fuel supply constant (don’t lift off the gas between gears) and see if that helps. The valve can also be cut out but that can also cause starting delays. Research the positive pressure relief valve PPRV

@funcars_ 4 жыл бұрын

Thanks buddy I will look into it👍 I’ll let you know of any changes when I remove it, I berly bought the vehicle 4 days ago and was neglected by the previous owner

@dannyjohnsonsgarage 4 жыл бұрын

Bryan Villavicencio You’ll want one of these! kzfaq.info/get/bejne/lbCqfpCCtMqznYE.html