performance ignition coil. - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > performance ignition coil.

Year End Clearance Sale! Save 20%Warn, Smitybilt, Engo, Rugged Ridge Winches at CCORIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 07-05-2013, 01:35 PM   #1
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 615
performance ignition coil.

I'm thinking about upgrading my coil to one on Ebay that is selling the coil with the 8mm wires. I tried to search but I couldn't find any zj threads. What is the stock voltage on a 5.2? Would it be worth it to upgrade it? I'm thinking about going with ngk chopper v-power. If I do get an upgraded coil should I keep the plug gap to .35 our should I go bigger? Here is a link to the one on Ebay that I was looking at. This one looks like it is for the 4.0. Is there a certain one for the 5.2? Let me know if there is a better one out there.

http://www.ebay.com/itm/JEEP-45K-Vol...41fd8c&vxp=mtr

__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 01:48 PM   #2
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 615
I looked on Amazon and found Accel, msd, and jegs. I feel more comfortable with these beans then the Ebay one. And I would want to upgrade the wires cap and rotor as well. Thanks for the help!
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 01:53 PM   #3
PolkaPower
Registered User
1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss, Italy
Posts: 16,522
You can buy the ignition upgrade from Kolak
PolkaPower is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 02:01 PM   #4
riot1987
Professional Wise Guy
 
riot1987's Avatar
1997 ZJ 
 
Join Date: Jun 2012
Location: Lakewood, COLORADO
Posts: 3,834
Does it make a noticeable difference?
__________________
http://www.jeepforum.com/forum/f22/riots-97-grand-1436100/

Build thread^^
riot1987 is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 02:06 PM   #5
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 615
Quote:
Originally Posted by PolkaPower View Post
You can buy the ignition upgrade from Kolak
I just remembered that! I'm going to email him and get the price for that. Does it help the engine at all?
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 02:07 PM   #6
HighLonesome
Belief In All Things Jeep
 
HighLonesome's Avatar
1995 ZJ 
 
Join Date: Feb 2005
Location: New Mexico
Posts: 5,842
I think stock is like 32-35 kv.

Carry your old coil as a spare.

Gap the NGKs to .040-.045

Looks like a decent upgrade. You could do this for not much more and get a cap and rotor too...

http://www.summitracing.com/parts/ms...view/make/jeep
http://www.summitracing.com/parts/su...view/make/jeep
HighLonesome is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 02:07 PM   #7
B93
Registered User
1998 ZJ 
 
Join Date: Apr 2012
Location: Whitby, ON
Posts: 342
I just replaced the cap, rotor, plugs, wires, and added a MSD coil. Can't say it made a noticeable difference. However, my engine has about 340,000 kms on it and I'm getting some exhaust leaks fixed today so that may be why I didn't notice a difference.
__________________
1998 Grand Cherokee 5.9 Limited. ~356,000 kms
B93 is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 02:15 PM   #8
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 615
Quote:
Originally Posted by HighLonesome View Post
I think stock is like 32-35 kv.

Carry your old coil as a spare.

Gap the NGKs to .040-.045

Looks like a decent upgrade. You could do this for not much more and get a cap and rotor too...

http://www.summitracing.com/parts/ms...view/make/jeep
http://www.summitracing.com/parts/su...view/make/jeep
That looks pretty awesome. I emailed kolak as well to see his prices and if he had anything to add.
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 02:27 PM   #9
HighLonesome
Belief In All Things Jeep
 
HighLonesome's Avatar
1995 ZJ 
 
Join Date: Feb 2005
Location: New Mexico
Posts: 5,842
Now I'm thinking the stock is around 30kv.

So a higher voltage should allow you to gap the plugs wider, providing a hotter spark. Plus the stock gap is very conservative because the gap widens as the plug electrodes wear down. So gapping close should make the plug last longer. Anyway a hotter spark should give a more complete burn and lead to things like smoother idle, extra power and better mileage. Its a pretty nice theory I think it does help but the improvements are pretty small.
HighLonesome is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 02:36 PM   #10
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 615
Quote:
Originally Posted by HighLonesome View Post
Now I'm thinking the stock is around 30kv.

So a higher voltage should allow you to gap the plugs wider, providing a hotter spark. Plus the stock gap is very conservative because the gap widens as the plug electrodes wear down. So gapping close should make the plug last longer. Anyway a hotter spark should give a more complete burn and lead to things like smoother idle, extra power and better mileage. Its a pretty nice theory I think it does help but the improvements are pretty small.
That sounds good. Hopefully all my improvements will add up soon!
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 04:47 PM   #11
coralman
I can wish can't I?
 
coralman's Avatar
1998 ZJ 
 
Join Date: Jul 2010
Location: florida
Posts: 4,841
Rat never had a good opinion about the accel coil.
__________________
Links to axle rebuilds, mount replace,a/c box rebuild,ect in history section of my profile page
coralman is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 08:41 PM   #12
davidtownsend
Registered User
2006 WK 
 
Join Date: Jul 2012
Location: Elkton, Maryland
Posts: 615
Quote:
Originally Posted by coralman View Post
Rat never had a good opinion about the accel coil.
I will definitely stay away from accel. I'm thinking about kolak's or the links highlonesome put in his post.
__________________
1994 Jeep Grand Cherokee 5.2L Limited
2006 Jeep Grand Cherokee Overland 5.7L Hemi
davidtownsend is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 10:54 PM   #13
Uniblurb
Web Wheeler
 
Uniblurb's Avatar
1996 ZJ 
 
Join Date: Jan 2012
Location: Central, Ohio
Posts: 3,938
I went with the Accel super coil and seems to work well in my 96 4.0. Believe Rat's only gripe with the Accel is he said they don't last very long and guess I'll find out.
__________________
96 4.0 ZJ Laredo, 2004 4.7L WJ Limited, 93 4.0 XJ (spare), 96 4.0 XJ (son's)

-Stalling ZJ? 12 things to check before replacing a sensor; the Dirty Dozen
-Crankshaft position sensor multimeter test. & video of testing.
Uniblurb is offline   Reply With Quote Quick reply to this message
Unread 07-05-2013, 11:06 PM   #14
ZeeJay1997
Registered User
1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
Posts: 6,902
I'm running the factory coil on mine. I took it off when the PCM was giving me fits. Found it in my spare parts box a couple of months ago and reinstalled it because the low end NAPA coil never impressed me much. Worked good, just looked kinda chincy.
ZeeJay1997 is offline   Reply With Quote Quick reply to this message
Unread 07-06-2013, 12:50 AM   #15
xcaliber81
Registered User
1994 ZJ 
 
Join Date: Jul 2012
Location: Prince George, B.C
Posts: 3,086
As far as I can tell mine is original also pretty good considering its got almost 500000 kms.
xcaliber81 is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.