Plugs/Gap - Modified LT4s - Page 2

JSH · 09-07-2022, 08:54 AM

Quote:

Originally Posted by LiqTenExp

I'm not sure what fueling everyone is using and if running E blends changes the game here with gap.

Most every JRE car that I see here runs ethanol whereas I'm running GT100. The type of fuel must affect the plug gap to some degree.

Quote:

Originally Posted by EDFHOBBIES

NGK 6510 gap to .022 for me

Did you work your way down to .022 from larger gaps?

XXX ZL1 · 09-07-2022, 08:54 PM

NGk 6510 and run ..032. Many different approaches to plug gap but at my shop we want them as wide as we can and not have issues blowing spark out at WOT. The wider gap will idle better. I have played with it on the dyno and the 6510 at .045 didn’t have issues at 16 lbs. That is as wide as I went testing. I then tightened it to .020 and idle was noticeably rougher.

09-07-2022, 08:54 PM	#16
XXX ZL1 Drives: 2024 ZL1 M6 Join Date: Sep 2018 Location: Pace FL Posts: 449	NGk 6510 and run ..032. Many different approaches to plug gap but at my shop we want them as wide as we can and not have issues blowing spark out at WOT. The wider gap will idle better. I have played with it on the dyno and the 6510 at .045 didn’t have issues at 16 lbs. That is as wide as I went testing. I then tightened it to .020 and idle was noticeably rougher. __________________ 2024 Riverside Blue ZL1 M6 Magnuson 2650R, NW 103, Roto Fab Big Gulp Kooks 2 inch LT's, Stainless Works Legend NPP THP Billet Valve Covers, Mighty Mouse Wild CC Signature Forged 20x10.5/20x11.5, BMR springs, BMR Cradle lockout, AAD Billet arms 2023 Vivid Orange ZL1 M6 - sold 2019 Riverside Blue ZL1 A10 - sold

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