| [GMCnet] Another mystery ignition module failure [message #334243] |
Sat, 30 June 2018 08:51  |
glwgmc
Messages: 1014
Registered: June 2004
Karma:
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Senior Member |
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I, too, found this very informative. I was especially interested to see the note about the small drill mark on the drive gear. It says if that is not properly aligned then the distributor will be 3 degrees out of phase. Never heard that before. As many times as I had distributors out and put them back on our two coaches it would only be random luck if I got them properly aligned. No mention of how that might effect performance but one would expect that to impact the magnetic field and current in the coil.
When installing the FITECH fuel injection I learned that the wire size changes inside the bundle on the wire going to B+. That transition point is also a place where corrosion could play a role in less than optimum performance.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
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Message: 13
Date: Sat, 30 Jun 2018 07:27:59 -0400
From: Ken Henderson
To: GMC Mail List
Subject: Re: [GMCnet] Another mystery ignition module failure
Message-ID:
Content-Type: text/plain; charset="UTF-8"
JD,
Thanks for that link! That's by far the best HEI description I've ever
seen. And it even has a reference to the GMC MH!!!
Ken H.
On Sat, Jun 30, 2018 at 12:42 AM Jdlisenby@hotmail.com <
jdlisenby@hotmail.com> wrote:
> The module discussion led me down the internet rabbit hole reading up on
> the HEI, I haven't worked on one since high school. I found this discussion
> useful, with a good description of proper coil selection and applications.
> http://www.pontiacpower.org/HEI.pdf
> --
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Jerry & Sharon Work
78 Royale
Kerby, OR
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