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Registered
Join Date: Jul 2003
Location: Perfidious Albion
Posts: 4,184
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You can never have too good a ground...
Every sensor on the motor - as well as ground for the alternator, IIRC - needs a ground path, and that ground strap is the only electrical connection from the motor to the body of the car.
Fiberglass rust removal pens work well for getting nice shiny threads & body contact area with the absolute minimal removal of actual material.
A liberal application of dielectric (silicon) grease will probably help protect the strap from oxidization - otherwise, they can turn into crumbly dust pretty quickly - like only a few years...
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'77 S with '78 930 power and a few other things.
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