Type II ignition- any better??

[rob86gn]

Has anyone had better luck with the type II ignition? Is it more reliable? Withstand heat any better? I am to the point where I have been through several coils and two modules and I think I need to replace both and start fresh with GM brand this time. Would I be better off to just switch to the type II?

 

[Instro84]

i converted because it was cheaper than the stock ones.

 

[rob86gn]

Has it been reliable? Any thing else I should know?

 

[norbs]

Yes a few spark plug wires will be short. the coils go bad just as easy so becareful

 

[VadersV6]

Check out my post on the module problem on this page. Even if you have all the grounds in place, they wont be very good on any 18 year old car.

 

[Lee Thompson]

friend

A local friend of mine who was an engineer @ Delco Remy (Delco Remy is now gone) was in on designing the type II coil system. He put one on my car in 1992. He said they will withstand the heat better than the stock unit but DO NOT put out a hotter spark. They do make a hotter coil (GM, Accel, MSD ). How much hotter, I don't know. My module is still going strong. I recently swithched over to the GM methanol coil but do not see any difference in performance. My son was having a high boost miss and by switching over to the methanol coil it fixed his car. His car used to be a carb. car and was switched over, so other issues may be involved.
I do know the type II is not compatable with a VDO tach.

 

[bruce]

I've been running type II coils with my DCI set up for about a year now, and it fires the coils with about a 400v primary voltage. So far they're doing just fine. When wired just normally, I didn't see any gains.

 

[norbs]

Put a timing light on the car and watch how it fires. The type II will not skip or misfire. 90% of the type I ignitions misfire at idle on cyls' 1,3,5. For some reason 2,4,6 are always fine. I have tested this on many cars. If the module and coils are 100% the timing light wont skip a beat. As we speak i am ordering msd coil adapters too hook the accel cdi boxes up to my car. There are no words to descibe the spark output, other than amazing. I will be dynoing the car with and without the cdi in use.

 

[rob86gn]

I was curious how the dyno went. I'd like to know what ignition parts you changed/put on and how reliable they seem to be.

 

[norbs]

No dyno yet, still waitng on the 3rd accel box to come in, and hours of wiring, shielded wires etc. Maybe with 2-3 weeks

 

[mybuick]

they wirked fine with my 84 engine, but when i built my 87 engine the coils didnt workto good so i went with the magnavox unit now no problems.

 

[rob86gn]

Norbs- I just installed Taylor Thundervolt 50's, and new GM coil & module. It runs alot better but I hooked up the timing light like you said and sure enough, there's a miss.

While driving I can only really notice it under light acceleration in overdrive. The idle is a little rough too. My TPS is at .44. I'm anxious to know how this new ignition you have is going to work...guess I'll try swapping them out with Kirban, that's where I bought them.

 

[norbs]

I am trying to get some time to work on it, but things just seem to keep me occupied. Well the timing light test doesn't prove to much, but i just don't like it showing a miss on a type I module, and you try a type II and its smooth and steady. I have the type II on and it runs good with the better coils, but it still has a miss above idle once in a while. I think its part of the waste spark causing the uneven feeling, since every buick i have seen has that "shake" in it just above idle. Will Keep you posted. You best be off to buy a MSD box and wire it in to a type II system, using the better coils also. Have Not done any high boost passes. However, when I'm done with the accel boxes, I should be able to run i would think a .045 Gap instead of .032

 

[BJM]

The Type II is of course much cheaper and its nice that you can swap individual coils as well. I found it made my car idle a bit better primarily.

 

[bruce]

However, when I'm done with the accel boxes, I should be able to run i would think a .045 Gap instead of .032

Trouble with that is if you're running race or cold plugs, then you wind up bending the side electrode at an odd angle.

Some misc data:
http://www.t6p.com/forums/showthread.php?t=7649

I'm having real good *luck* with the colder NGKs, they're pregapped at .032, and bending them open isn't something I want to do.

With as much turbulence as the TR heads have, personally I don't think you need alot of gap. While I've run the CNP with .100 gaps, and while it did seem a bit more responsive, I'm not sure I actually made anymore HP with that big of gap (only tested to ~21 PSI, as I recall).

 

[norbs]

I will stick with the UR5's they maybe a bit hot, but don't foul too easy. Think i will have to retard the timing a few degrees because of the increased spark?

 

[bruce]

I will stick with the UR5's they maybe a bit hot, but don't foul too easy. Think i will have to retard the timing a few degrees because of the increased spark?

Nope, you only *need* to retard if you increase the plug gap. With the increase in gap, the initial *flame kernel* is larger so it propogates thur the chamber slightly faster.

If you can retard the timing with no lose of HP, that would be a *good* thing, in that it reduces the chance of any ocassional detonation....

If you've found the *6s* to be too cold that's one thing....
While hotter means less likely to foul, it also means it's more likely for pre-ignition to occur.

 

[49-blues]

Lee- where can someone get the gm methanol coils? any part numbers?

 

[Jbenn911]

From another post:

"gmpartsdirect.com has 1106008 for $28. Same as Delco D546."

 

[Lee Thompson]

part #

Part # 1106008, any GM dealer. I have an extra set that I bought back in the winter for a job that fell through. I believe I paid around $35 each, my price. I was going to keep as spares but will sell for $110 shipped. They may be getting scarce @ GM.