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Old 07-17-2007, 01:23 AM   #1
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Default How to test MSD Coils

Hey guys
Hope I put this in the right place.
Been offered a great deal on some little used MSD coils, but I am just wondering how to test them. Can't it be done the same way as the stock coils? Anything to watch out for?
THanks
Erik
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Old 07-17-2007, 02:07 AM   #2
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Just like the testing the stockers. Except for the difference resistances which can be found in Tech Info or on MSD'* website.
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Old 07-17-2007, 02:13 AM   #3
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Yep, just "ohm" them. Measure primary resistance between the two terminals at the bottom (cut a normal automotive fuse in half to use for pins if you can't get in there) and the secondary resistance between the two pins on the top. If I recall, VERY general specs for most cars is around 1-3 ohms primary and 8000-15000 ohms secondary. Look it up for your car. The MSD coils have the same, or very close resistance values and turns ratios to factory coils, as you can't really improve on the GM ones. The only way to measure voltage output is running on the scope with a test plug or a spark tester.
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Old 07-17-2007, 09:05 AM   #4
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And nobody has pointed him to the incredibly detailed Techinfo article on how to do it and what resistances to expect?
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Old 07-17-2007, 09:47 AM   #5
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Quote:
Originally Posted by willwren
And nobody has pointed him to the incredibly detailed Techinfo article on how to do it and what resistances to expect?
Since you mention it..but didn't get a chance. Here ya go
http://www.bonnevilleclub.com/forum/...ighlight=coils
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Old 07-17-2007, 09:49 AM   #6
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I prefer people to LOOK for the article they need so they can see all the other information up there that they've been overlooking.

This is why I GENERALLY don't post direct links to articles.
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Old 07-17-2007, 11:36 AM   #7
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Sorry...Misread your intent.
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