i want to put a gm blaster coil on my 90 rs 3.1 but the guys at the auto store tell me if i put thet coil on i will burn up my pickup coil control module and other stuff. they said i would have to change the wiring and stuff for the coil to not fry anything is that true or can i just put the gm blaster coil on not worry?

 

No , its not , I still have my same pick-up coil .Been driving on it for 3 months with my Gm blaster coil . Also still running on my same ignition control model .I have an Accel one I got from Summit , I just haven't put it in yet . I have heard that you need some 8mm wires to run with a stronger coil , I dont know how true it is , but thats what Ive heard .I wouldn't chance it bud , get some 8mm wires .

 

I've been running a MSD Blaster GM Coil #8226 for a year with no problems. However, I did upgrade to a set of Accel 8.8mm Spiral Custom Fit #8879 ignition wires at the same time.

 

yea, i have been running mine for 2 years w/o a problem at all. i upgraded my wires to MSD's 8.5mm super conducter set.

 

(laughing) That's why you come to "us", and not those parts store monkeys. Go back and tell them they're full of crap, then order the coil from Summit Racing.Com (800-230-3030, call for a free catalog, and ask for the part # and price). And if your computer won't connect here, Summit even has a tech line! You can ask their techs if it'll work.

Besides; burn up the pickup coil and control module??? Geez. That doesn't even make sense! The control module (black connector on the coil) just tells the coil when to fire. The coil stores the "big" energy, sends it out through the coil-to-cap wire, and it never goes back through to the rest of the car!

A coil has two windings; primary, and secondary. The primary is the high voltage side, the secondary is the low voltage side. (Someone correct me if I mixed the two up). Anyway, unless your coil is smashed flat with a sledgehammer, the two circuits are isolated from each other. Do a search for "transformer windings" or "coil windings" from yahoo.com - or, maybe http://www.howstuffworks.com has a section on 'em.

 

I ran a GM blaster coil for about 4 months with cheap 7mm wires and never had a problem.
(ironic though that after just rebuilding the dist, putting in the platinum plugs, hooking up the MSD 6A, Accel module, and the 8.5 wires, and checking the timing I'm having more problems than before.) i.e. idles rough and died last time I drove it. I'll step out here in a minute and throw on some regular plugs and see what happens

 

What those counter guys are saying and it is "correct",
One part is failing/failed, next part down the chain can go, next.
And it is VERY WISE to replace old plug wires, if they have not been changed since?
This board knew of upgraded wires for $10 + shipping.
That's a no-brainer, if your wires are of questionable vintage.
It's up to you the customer to use your own judgement on replacment of parts.
How many here have pulled, rebuilt their distributors? You will one day.
These mpfi engines love, tip-top spark, proper hi level fuel pressure & no vacuum leaks.

 

Along those lines it'd be correct, but, they should say that changing the coil at all, even with the exact same GM unit, would cause module failure. I just can't see how a hotter coil would affect the spark module or pick-up coil at all.

And actually, I think I did goof; I think the "secondary" winding is what gives off the high voltage.

 

Remember, they are also trying to sell more parts
Like Would you like soda & fries with that burger?

 

True, very true!

 

I was wondering about my old plugwires when I put the new blaster coil in, but that was a desperate situation. Either the coil was bad or the O2 sensor was bad so I replaced both at the same time. (the car didn't have enough power to move or even idle once it started warming up) One of the two fixed it. I wanted to wait until the dist and everything else was ready and put the coil and all that on at the same time.

 

One sure way to tell bad wires.
Open hood at night, engine running in the dark.
Impress your girlfriends with your knowledge!
You see sparks you have problems!