Manufactured plug gap: Champion 7034's. - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-16-2013, 03:28 AM   #1
Jeeper
 
MarkGLHS's Avatar
 
Join Date: Aug 2012
Location: Ellington, Connecticut
Posts: 1,148
Manufactured plug gap: Champion 7034's.

So I bought a set of Champion 7034’s based on the recommendations on this forum.

When I checked the manufacturer’s gap (the gap the plugs were made with) I found the plugs were gapped at almost .050”. The gap I need for the 4.0L engine is .035”.

I’ve been using Champion plugs for 30 years. I have never seen a Champion plug that was not gapped from the factory very far off from what the engine requires, so, I was surprised to see such a large gap on these 7034’s.

I presume this is due to the fact that the 7034’s can be used in a variety of engines, some of which might require such a large gap, so Champion makes the plugs this way, am I right?

I know I can close the gap, but the ground electrode will not be parallel to the base of the plug, which is the desired outcome and the reason why it is important to manufacture the ground electrode gap close to the final number needed by the application.

Anyone have any issues with closing down the .050”+ gap to .035”? Thanks.

__________________
2002 Wrangler Sahara, all stock, 5-speed, Dana 44, duel tan tops, 2nd owner.

2008 Hemi Grand Cherokee Limited 4X4, Quadradrive II, original owner, 22,000 miles.
MarkGLHS is offline   Quote Quick Reply
Old 05-16-2013, 05:43 AM   #2
Jeeper
 
flflash's Avatar
 
Join Date: Mar 2013
Posts: 519
I'm a longtime Champion user also and use them in everything I own, never an issue
You did'nt mention what year your Jeep is but for the Coil on plug 4.0's the Champion 7034 was a very good choice. It has the correct heat range and is a double-tipped platinum plug that will last 100k with no problem.
Carefully gap them to the spec label on your Jeep and your good to go!

flflash is offline   Quote Quick Reply
Old 05-16-2013, 06:20 AM   #3
Jeeper
 
Neil F.'s Avatar
 
Join Date: Nov 2007
Location: Marlton, NJ
Posts: 5,264
Images: 1
Quote:
Originally Posted by MarkGLHS View Post
So I bought a set of Champion 7034’s based on the recommendations on this forum.

When I checked the manufacturer’s gap (the gap the plugs were made with) I found the plugs were gapped at almost .050”. The gap I need for the 4.0L engine is .035”.

I’ve been using Champion plugs for 30 years. I have never seen a Champion plug that was not gapped from the factory very far off from what the engine requires, so, I was surprised to see such a large gap on these 7034’s.

I presume this is due to the fact that the 7034’s can be used in a variety of engines, some of which might require such a large gap, so Champion makes the plugs this way, am I right?

I know I can close the gap, but the ground electrode will not be parallel to the base of the plug, which is the desired outcome and the reason why it is important to manufacture the ground electrode gap close to the final number needed by the application.

Anyone have any issues with closing down the .050”+ gap to .035”? Thanks.

That is correct, the same plugs can be used in different engines and different gaps are required. You NEVER go with or TRUST plugs to be pregapped for you specific application. You always check and adjust as required for your vehicle. It does not matter that the electrode is perfectly parallel. The spark is always going to take the shortest path. Just tap the electrode closer and then spread it back out with the gap tool to .035 (been changing and gapping plugs for 30 years)
__________________
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.
Neil F. is offline   Quote Quick Reply
Old 05-16-2013, 06:50 AM   #4
Jeeper
 
MarkGLHS's Avatar
 
Join Date: Aug 2012
Location: Ellington, Connecticut
Posts: 1,148
thanks for the feedback...i agree i never trust the gap to be correct out of the box I always inspect each plug and make adjustments....its just i have never had to close such a big gap and was concerned about the operation of the plug.

my 4.0L is a 2002.
__________________
2002 Wrangler Sahara, all stock, 5-speed, Dana 44, duel tan tops, 2nd owner.

2008 Hemi Grand Cherokee Limited 4X4, Quadradrive II, original owner, 22,000 miles.
MarkGLHS is offline   Quote Quick Reply
Old 05-16-2013, 09:12 AM   #5
Jeeper
 
Join Date: Oct 2011
Posts: 1,527
Quote:
Originally Posted by Neil F. View Post
You NEVER go with or TRUST plugs to be pregapped for you specific application. You always check and adjust as required for your vehicle.
That depends entirely on the type of plug. The gap on some plugs is not adjustable, so it's critical that the "out of the box" gap is correct.
tangofox007 is online now   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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

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 Off
Pingbacks are Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 09:51 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC