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Join Date: Feb 2002
Location: Scituate, MA
Posts: 1,301
Ground question

I was wondering if I could put a ground strap from the intake manifold to one of the bolts that hold the plate that holds the CDI unit to the body of the car. I currently have a ground going from the tranny to the ground post but it doesn't always get the ground to start. I believe the tranny ground connection needs to be cleaned which I have tried but to no prevail. I can't really get my fingers in place for a good cleaning and will wait until next time I drop motor. Any suggestions about the CDI plate.

Thanks,

David

Old 01-03-2004, 07:10 AM
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Join Date: Dec 1999
Location: TX USA
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Porsche Crest

Argeo,

I ran a braided ground strap about 8" - 12" long from under the upper, forward CDI mounting bolt arond to the round, fender ground for the relay/fuse/CDI panel ... after cleaning that fender ground location with ZUD. Dow Corning silicone grease at both ends of the strap, and all over both mounting bolts/nuts.

Then, I ran a #4 ga. welding cable with soldered lugs from the body to the lower mounting stud of the starter!

There is already a factory grounded shield braid from the distributor and coil to the CDI/relay panel ... which may need cleaning and treating with silicone grease.

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Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 01-03-2004, 07:23 AM
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