Spark plug gap, what should it be at?... S/C - Page 2 - Cherokee SRT8 Forum
WK1 General Performance Discussion If you are planning on modifying your Jeep Grand Cherokee SRT8 with a performance enhancing modification, this is the section to post about it.

LinkBack Thread Tools Display Modes
post #11 of 13 (permalink) Old 12-06-2012, 06:57 PM
Users Awaiting Email Confirmation
Join Date: Jan 2010
Location: Toronto
Posts: 810
Thanks: 40
Thanked 158 Times in 96 Posts
Mine are gapped at .032 and no issues so far...I would gap closer at .028 - .030 if running more than 12lbs

Last edited by First Jeep; 12-06-2012 at 07:02 PM.
First Jeep is offline  
Sponsored Links
post #12 of 13 (permalink) Old 12-06-2012, 09:03 PM
Lifetime Premium Member
Join Date: Jan 2008
Location: Down South in Florida
Posts: 17,078
Thanks: 1,709
Thanked 2,892 Times in 1,298 Posts
I'd recommend .028'ish. That's what we run with our turbo Jeeps and haven't had any issues so far. If you're running 1-10psi, go 1 step colder on the plugs, 11-20psi go 2 steps colder on the plugs. That's what we were told by NGK.

2007 Jeep GCSRT Turbo 8.30@167
2015 Hellcat Charger 770rwhp no times yet
Harrison@Stage6 is offline  
The Following User Says Thank You to Harrison@Stage6 For This Useful Post:
Knuckles (12-06-2012)
post #13 of 13 (permalink) Old 12-06-2012, 09:14 PM
Straight Up Beast SON!!!
Knuckles's Avatar
Join Date: Oct 2008
Location: Chicagorilla!!
Posts: 17,142
Thanks: 2,910
Thanked 1,234 Times in 997 Posts
He gapped them at .030 and felt a big difference already..... He said some were gapped at .026, .035, and etc..... He is running 12.2 psi of boost right now....

Mods: Bwoody CAI/FRI Lil boy Cam/ SW Headers/CORSA exhaust/SLP UD Pulley/Black Ops Autoworks Ported Intake Manny/Built Trans with FTI 3600 stall/ Johan aka Diablotoona Custom Tune
Knuckles is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Cherokee SRT8 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Spark Plug Gap TutsSRT8 WK1 General Performance Discussion 6 04-01-2014 07:31 PM
Spark plug tech help srtscj WK1 SRT8 General Discussion 16 03-25-2011 11:31 AM
spark plug ? mrfranklyn WK1 SRT8 General Discussion 2 01-05-2011 01:24 PM
What spark plug? tonyl27 WK1 SRT8 General Discussion 2 07-13-2010 03:15 PM
Spark Plug Gap??? NYCSRT WK1 Troubleshooting / Problems Discussion / Dealer Service 5 03-22-2009 06:21 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome