creepingdeath94

iTrader: (1)

I would like to replace the ignition module and coil on my '93 T/A. Does anyone know of a good source for this at a decent price or would Autozone (Duralast) or NAPA or something be fine for this. I will only use GM/Delphi parts for the opti/distributor/etc, but was curious if the coil or ignition module really mattered as much for brand?

RamAir95TA

iTrader: (2)

IMO, if it's ignition or sensor related, I always use Delco.

creepingdeath94

iTrader: (1)

I kind of thought so. I was just curious if anyone had any luck with another brand or parts store parts/brands. I also was wondering if the MSD/Accell/etc. stuff Summit sells was worthwhile for coils? I only ask because MSD wires seem to be ok for everyone and the coil is pretty hard to "f" up and MSD has been doing them for a while. The module I would probably just stick with GM part # but the coil if it is better/less resistance/more turns/better performing without issues, for the same money as a GM, I would go with it. So long as no issues arise. Just thought it would be worth an ask from everyone to see who had luck or no luck using what parts for their coils/modules.

explicit.muscle

iTrader: (1)

i had an msd blaster coil, and it is too powerful. it would send sparks thru the silicone on the wires and on to the block. Just stick with the delco.

itSSlowZ28

iTrader: (5)

how did you determine the coil was too powerful? what kind of wires are you running?

explicit.muscle

iTrader: (1)

the taylor 8.0mm otvc wire kit, the msd 8.8 otvc wire kit, and regular route msd 8.8's. all of em would let the spark thru. all wires were brand new. stock coil works fine.

Razor_Blade

iTrader: (8)

Interesting. I agree that the stock coil being good to go, but my car came with the MSD coil already installed with MSD 8.8 mm wires. I haven't had any problems with spark leaking.

collier341

iTrader: (5)

when i changed my ignition control module i went with AC Delco.. i also upgraded to the msd blaster coil which i believe is a little too powerful.. i constantly have my wires arcing.. if i could redo it, i would have just gotten stock or delco.. i've also heard msd's new streetfire line for coils is closer to a stock replacement and they're pretty cheap

creepingdeath94

iTrader: (1)

That is the one I was looking at for aftermarket...the street blaster. But if more people have had trouble with others, I will just stick to Delco. I was just curious. I'm going to do the ICM cooling/spacer mod and figured while it was off, replace it as I am having some slight intermittent misfire issues that are getting worse, and the car has over 100k and is 15 years old. Just don't want to waste my money.

collier341

iTrader: (5)

is there a thread on this?? what is it??

ss.slp.ls1

iTrader: (36)

The coil comes with studs that bolt it to the head. Remove the coil and screw the studs in the the head, then put the coil on the studs and tighten it down with nuts. It will secure the coil and ICM about a half inch off of the cylinder head, keeping it away from the heat of the cylinder head.

creepingdeath94

iTrader: (1)

Alright, new question...coil related. I went ahead and replaced the coil with a Delco one and have a question regarding the resistance. In an attempt to check the old coil before just replacing it, I measured the primary/secondary resistances. What should they be? I found the secondary to be 8200 ohms approx. on the old. The new one is at 9200 ohms. Is that right? Would the discrepancy between the old and new be a problem or are they both within spec? What should the primary resistances be? Basically, I am replacing/have replaced the coil already with a new, but would still like to know what the proper resistances are for testing purposes in the future/see if I should keep the old as a spare or something for down the road. Also, would that 1000 ohm difference weaker/less resistance cause an issue like an intermittent misfire?

creepingdeath94

iTrader: (1)

No dice?

ss.slp.ls1

iTrader: (36)

All I know it's supposed to be ~8000 ohms for each pin to coil contact point like this (still works the same way for the newer style coil):

http://shbox.com/1/coil_testing.jpg