#61  
Old 08-13-2019, 07:59 AM
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HWYSTR455 HWYSTR455 is offline
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I don't buy the type of coil (epoxy, E-core) is what killed it, original GM HEI distributors were using them from the factory.

All the aftermarket HEI modules have a coil recommendation, and all have E-core type coils on the list. Some provide a range of resistance value for their' modules, most coils list their' values.

Of course if you're running an MSD box, you should be running the low resistance bushing, and many recommend it with aftermarket modules. That can't be done in small bodies, because the bushing is integrated with the cap. Solution is to run the MSD replacement caps, or others that have the low resistance bushing. Those all use HEI towers on the cap, so you would know which is which.

Glad you got it figured out Will, did you address the cranking issue too?

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  #62  
Old 08-13-2019, 10:11 AM
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It was that stinking clear grease. The simple answer.
  #63  
Old 08-13-2019, 10:12 AM
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This;
Quote:
Originally Posted by grivera View Post
There was a clear greasy substance between housing and old module.
  #64  
Old 08-13-2019, 12:57 PM
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Quote:
Originally Posted by HWYSTR455 View Post
I don't buy the type of coil (epoxy, E-core) is what killed it, original GM HEI distributors were using them from the factory.

All the aftermarket HEI modules have a coil recommendation, and all have E-core type coils on the list. Some provide a range of resistance value for their' modules, most coils list their' values.

Of course if you're running an MSD box, you should be running the low resistance bushing, and many recommend it with aftermarket modules. That can't be done in small bodies, because the bushing is integrated with the cap. Solution is to run the MSD replacement caps, or others that have the low resistance bushing. Those all use HEI towers on the cap, so you would know which is which.

Glad you got it figured out Will, did you address the cranking issue too?

.
Thanks Mike- I havenít gone past the module at this point.
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  #65  
Old 08-13-2019, 01:39 PM
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Does your distributor cap have HEI tower type plug wire connectors, or the points style?

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  #66  
Old 08-13-2019, 04:02 PM
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Thermal grease comes in many different formulations, some formulations are clear.
Guys like Dave Ray donít stay in business for 42? years by not knowing what they are doing or talking. The BS business/people come and go

In this world you learn to listen to the older guys that have become experts in their specialty...from real world experience.
I Listen carefully and learn from these experts to greatly increase my knowledge base, supplementing my own personal experience.

When you get to the starter deal Will, if it is still present, donít hesitate contact me.
  #67  
Old 08-13-2019, 04:43 PM
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Quote:
Originally Posted by HWYSTR455 View Post
Does your distributor cap have HEI tower type plug wire connectors, or the points style?

.
It has a points style cap/connectors

Quote:
Originally Posted by STEELCITYFIREBIRD View Post
Thermal grease comes in many different formulations, some formulations are clear.
Guys like Dave Ray donít stay in business for 42? years by not knowing what they are doing or talking. The BS business/people come and go

In this world you learn to listen to the older guys that have become experts in their specialty...from real world experience.
I Listen carefully and learn from these experts to greatly increase my knowledge base, supplementing my own personal experience.

When you get to the starter deal Will, if it is still present, donít hesitate contact me.
Thanks Luke! I'm considering extending the module wires and remote mounting it to a cooler location. This way, if it dies again it's a quick R&R.
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  #68  
Old 08-13-2019, 05:35 PM
TAQuest TAQuest is offline
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Quote:
Originally Posted by STEELCITYFIREBIRD View Post
Thermal grease comes in many different formulations, some formulations are clear.
Guys like Dave Ray donít stay in business for 42? years by not knowing what they are doing or talking. The BS business/people come and go

In this world you learn to listen to the older guys that have become experts in their specialty...from real world experience.
I Listen carefully and learn from these experts to greatly increase my knowledge base, supplementing my own personal experience.

When you get to the starter deal Will, if it is still present, donít hesitate contact me.
The clear stuff doesn't have the zinc oxide. Doesn't work as good.
  #69  
Old 08-13-2019, 06:12 PM
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Quote:
Originally Posted by TAQuest View Post
The clear stuff doesn't have the zinc oxide. Doesn't work as good.
What color is this one? https://www.amazon.com/Super-Lube-98...995951197&th=1
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  #70  
Old 08-13-2019, 06:31 PM
TAQuest TAQuest is offline
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Quote:
Originally Posted by grivera View Post
That one is white and has the fine zinc oxide particles in it. If you go to the manufacturers website it breaks it down for you.
The clear stuff is just silicone without the fine metal particles.
  #71  
Old 08-13-2019, 06:45 PM
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Thanks
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  #72  
Old 08-13-2019, 07:22 PM
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I often thought about putting the module inside the car and on a old PC heat sink still utilizing the little fan on it.

Overkill but interesting

Also PC processor's are/were mounted in the same fashion and use a heat sink paste some high end stuff boasted silver loaded but you can get paste at puter places last I bought was at best buy

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Last edited by Formulas; 08-13-2019 at 07:28 PM.
  #73  
Old 08-13-2019, 08:58 PM
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Completely non-Pontiac answer, but does apply to remotely mounted GM HEI modules.....

I modified the distributor in my '52 GMC six cylinder engine by ..
1. Removed the points and condenser from the GMC distributor.
2. Machined the center hole of a mid-70s Chrysler 6 cylinder reluctor wheel to slide down over the GMC distributor's cam that activates the points.
3. Mounted the matching Chrysler magnetic pickup in the GMC distributor.
4. Used about 5-6 feet of 22 gauge twisted pair shielded wire (because the wires were so long, I didn't want any false firing because of electrical noise) to connect the mag pickup to a GM HEI module that I mounted on a heat sink.
5. Mounted the module & heat sink inside a gutted voltage regulator that was mounted on the firewall.
6. Connected the HEI's output back to an MSD Blaster 2 coil (oil filled, 0.7 ohm primary winding).

I used the white heat sink compound. Been working fine for 3+ years of almost daily driving.
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  #74  
Old 08-13-2019, 10:30 PM
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Very creative Bill- I need to identify space in engine compartment

Any suggestions on a quality brand module to buy as a spare?
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  #75  
Old 08-13-2019, 11:46 PM
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Quote:
Originally Posted by grivera View Post
Very creative Bill- I need to identify space in engine compartment

Any suggestions on a quality brand module to buy as a spare?
Mine is just a Speedway 91012338 HEI module, BUT (big but) Ö
a. being a six cylinder mine fires 25% less times at any given RPM than a V8
b. being a basically stock 228 cubic inch engine from 1952 I doubt I've ever had it to 3000 RPM
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  #76  
Old 08-14-2019, 08:32 AM
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So far, I havenít run into many complaints or issues with Davis Unified Ignition parts. They do sell a cap / rotor / coil / module Ďkití for those that have a solid factory distributor. They also sell those parts individually.

Granted, I donít put a ton of miles on my cars, but I have a pair of complete DUI HEIs that have been in service for 8+ years with zero issues.
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