Performance ignition coils? - JeepForum.com
 
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post #1 of 13 Old 05-21-2015, 03:42 AM Thread Starter
Drednot
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1991 YJ Wrangler 
 
Join Date: Aug 2005
Location: Phoenix
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Performance ignition coils?

Buddy of mine asked my opinion about high performance coils he's seen recently.
I have not tried any of them but got to looking at some and was wondering if they were any good.

My usual reaction would be to use a mopar replacement but I figured I would see if anyone has any experience with any of these...

They are all around the $45-55 mark.

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91 YJ Sahara, 4.0L, AX-15/NP231, D30/D35@3.07
12 Cherokee 4x4,3.7L,42RLE/MP1522, D30M/8.25@3.73
Emission test=YES
"Non Vi Sed, Arte"
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post #2 of 13 Old 05-21-2015, 05:16 AM
vadslram
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1990 YJ Wrangler 
 
Join Date: Jan 2006
Location: VA Beach
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More juice is always good.
Standard coils are built good enough and cheap.
So if all you want is good enough and cheap then stay stock. If you want to spend a little more and get a little more then go with the upgrade coil.
Don't expect to all of a sudden get neck snapping acceleration, in fact you might need an emissions test to actually see any difference between coils.
That said I had an accel super coil in my mustang and upgraded to an HEI system in my current YJ. I believe there is enough diference to make it worth the extra $$
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post #3 of 13 Old 05-21-2015, 07:25 AM
Que89YJ
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http://www.fourwheeler.com/how-to/en...ing-true-lies/

That being said, the coil, wires and gapping a plug wider will give you a hotter spark to fire a cylinder with a little oil leak or a worn injector.
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post #4 of 13 Old 05-21-2015, 08:28 AM
ssyj94
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1994 YJ Wrangler 
 
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I had an accell in mine years ago and found them to be very unreliable. I went through 3 of them in 2 years and then switched back to oem coil.
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post #5 of 13 Old 05-21-2015, 11:53 AM
vadslram
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1990 YJ Wrangler 
 
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Can type or like the one pictured above?

My Accel was the big fluted can type and it lasted through years of abuse, high underhood temps and frequent steam cleaning (I had a steam genny at work so why not use it )
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post #6 of 13 Old 05-21-2015, 01:46 PM
ghetdjc320
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1988 YJ Wrangler 
 
Join Date: Mar 2012
Location: Bella Vista
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I currently have the accel and it has worked fine for the last 3 years. Stock system is pretty good but I was building the motor from the ground up so I just went with the accel.

-DJC
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post #7 of 13 Old 05-21-2015, 03:09 PM
ssyj94
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Quote:
Can type or like the one pictured above?

My Accel was the big fluted can type and it lasted through years of abuse, high underhood temps and frequent steam cleaning (I had a steam genny at work so why not use it )
Direct replacement for a 4.0 like in the picture.
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post #8 of 13 Old 05-21-2015, 03:28 PM
Alabamaranger
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1990 YJ Wrangler 
 
Join Date: Sep 2006
Location: Leeds AL
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I use a MSD box. Use the factory box as a stanby. Use a Ford HEI Coil. You can get the coil for about $5 at the junk yard.


90 YJ, 4.2 with 2150 carb 4.0 Head and headers, Nutter with TFI and MSD. 1" BL, 2.5" spring lift, 33", Goodrich KM Mud Tires. Dana 30 w Aussie, Ford 8.8 w LS. 9000lb HF Winch.
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post #9 of 13 Old 05-21-2015, 08:48 PM
PA_YJ19
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1994 YJ Wrangler 
 
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Location: Altoona
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I've been running the msd coil on my stroker for 5 years now. Not a single issue yet, a good many of my buddies have had their stock coils die n then leaving them stuck in the middle of no where n I've had to bring them a replacement. I'm plenty satisfied w the msd one.
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post #10 of 13 Old 05-22-2015, 06:03 AM
ZombiePopper
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1989 YJ Wrangler 
 
Join Date: Apr 2015
Location: Pomona
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I've ran many on all sorts of apps,
I'm currently running an Accel Super Stock unit.
While they provide a hotter spark, another advantage is how they're "potted".
For lots of off road use you can go with an epoxy potted coil over an oil filled unit.
Nothing wrong with the oil filled units, but in some cases heat + high vibes can lead to the coil swelling from oil expansion and killing your spark until the coil cools back down, but this typically is the canister units...
The issue with modern coils (stock/aftermarket) is they are extremely prone to failure when shorts occur.

69Dodge Dart Swinger 5.9l mag swap
89YJ Wrangler 4.2
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post #11 of 13 Old 05-22-2015, 10:00 AM
jimbos76cj
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1989 YJ Wrangler 
 
Join Date: Jun 2007
Location: Florida
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I have a MSD street fire coil. So far no issues. My gaps are set at .05 but i also run a 6a box. Ive had no issue with the coil. I didnt realize my carb was really rich until I found my plugs were completely sooted. Still had no driving issues.
http://www.msdignition.com/Products/...reet_Fire.aspx

88 YJ 35's 8.8 rear, family style roll bar, ax-15 external slave conversion, Custom double D fab dash 4" of lift taurus fan, Head light wiring upgrade, MSD 6al, JB conversions SYE, 258 with RV cam, Long tube headers, Borla exhaust. 1"mm, Auto meter gauges.
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post #12 of 13 Old 05-22-2015, 10:04 AM
jimbos76cj
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1989 YJ Wrangler 
 
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88 YJ 35's 8.8 rear, family style roll bar, ax-15 external slave conversion, Custom double D fab dash 4" of lift taurus fan, Head light wiring upgrade, MSD 6al, JB conversions SYE, 258 with RV cam, Long tube headers, Borla exhaust. 1"mm, Auto meter gauges.
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post #13 of 13 Old 05-22-2015, 03:14 PM
cyoos
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1992 YJ Wrangler 
 
Join Date: May 2008
Location: Wichita
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I'm running the CRT coil and have no complaints.
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