| [GMCnet] HEI Module failure - a solution? [message #139742] |
Wed, 17 August 2011 23:01  |
Kirk
Messages: 80
Registered: April 2008
Karma:
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We had an HEI module failure on the way to Loon Lake in the Sierras. Of
course it was on an up hill grade between two blind curves on the edge of a
canyon and we were towing. All's well that ends well; we had a spare module
and coil and it didn't take long to trouble shoot and repair. We changed
the coil too. The Patterson distributor is only a couple of years old and
the failed module is stamped made in Canada.
We happen to have an HEI guru in our little town that converts small body
distributors to HEI and does other distributor mods. In our conversations
he said that with the coil in the cap the coil gets too hot, fails, and
takes out the module. Even though the coil bench tests OK he said he
wouldn't use it again with out a run test with lots of heat.
The solution - a remote coil. MSD makes a cap for a remote coil,
http://www.summitracing.com/parts/MSD-8401 I don't know when I'll get
around to the conversion as I already have replacement spare parts on board
and have other higher priority projects.
On the other hand; why should we drive around knowing that our modules are
like light bulbs and you never know when one will burn out and strand us.
The mountain situation was on the weekend prior to the Jeepers Jamboree and
Jeeps were already coming in. We put warning devices out and parked the
Tracker around the curve with the flashers on. We were able to coast
backwards to a pull off on the canyon edge. We were lucky this time. Maybe
we should change priorities?
MSD says; <<<These modified HEI dust covers allow you to remove the stock
HEI coil in your distributor cap and replace it with an externally mounted
coil. By going with an external coil, you increase the reliability and
performance of the stock HEI system.>>> HEI guru says he will do a write up
for us on the module problem and the remote coil conversion. We look
forward to comments from the electronics knowledgeable. Kirk
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Kirk & Eloise Yeager -
Motorcyclists/RVers/Dog Lovers -
77 Royale 455/TBI/3:55 -
49ers - N. Nevada -
NdnKirk at Gmail dot com
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