I just bought some plug for my 1j and whats the recommended gap for them? i searched but couldnt find anything. i got the ngk 6097's so are they gapped correctly out of the box?
Spark plug gap?
- Thread starter Nalleywhacker
- Start date
You'll just have to run them and see how your car likes the gap that they're set at. I know from personal experience that my car won't run without them being gapped to .022
The stock gap on them plugs is probably .032 which may run perfectly for your car. If I try it @ 17psi of boost then my car breaks up horribly at 4500 rpm. If you're on stock twins then you may be o.k. since you won't be running very high boost. It's easy to change them out, so try them like they are. If your car starts breaking up, lower the gap about .002 and try them again. Good luck.
The stock gap on them plugs is probably .032 which may run perfectly for your car. If I try it @ 17psi of boost then my car breaks up horribly at 4500 rpm. If you're on stock twins then you may be o.k. since you won't be running very high boost. It's easy to change them out, so try them like they are. If your car starts breaking up, lower the gap about .002 and try them again. Good luck.
THANK YOU SUPRAHERO! I think I found my problem. My car has been breaking up after I went single and up the boost. Everyone has been saying your running lean. I've been thinking about sparkplugs. So I got an AEM Wideband just to make sure. its full on rich at full throttle. I'm going to check my spark plugs now! THANKS! Now did you mean gap to .002 or .022?
Chris.
Chris.
suprahero;1215717 said:
I always start with a .028 and go smaller from there if it breaks up under higher boost. I run a .022 gap on mine and it still breaks up past 18-19 psi. With small gap you will get a bit of a missfire at idle. JZ engine are notoriuos for weak ignitors and weak, cracked coils. Pretty much every time I have tuned a JZ on the dyno we had to stop because of spark break up, normally around 17-20 psi. I am sick of it on my car so I am gonna install some LS1 coils and a better ignitor (Haltech e11 EMS).
Does your guys standalone run wastefire? With AEM (puts the coils in wastefire) I had to gap mine down to .022-.025 to run 17 psi (~450whp) to stop them from missing because I didn't have a DLi.
My buddys 35r 1jz runs .028 gap perfectly fine @ 18-20 psi.
My buddys 35r 1jz runs .028 gap perfectly fine @ 18-20 psi.
supra1008;1217778 said:
You're welcome Chris, and I did mean .022, but I would prefer you start at .028 and work your way down. Your car may run perfectly at .028. If it doesnt' then go to .026 and try that. It shouldn't take you but fifteen to twenty minutes to figure it out. Good luck.
sai_supra1jz;1218413 said:
His car would never run at .22...........:aigo:
Justin, I have to run mine at .022, but it works great at that gap for 24psi as well.
hey guys i'm not trying to jack the thread but can i spray with the 6097s or should i use different plugs? maybe some plugs that are even colder? if can spray with them what should i gap the spark plugs to with about 25 psi and a 50-75 shot?
