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Mitch speakum truth paleface! :D

I haven't even cleaned any of the connections in my 28, and it cranks fine. Nothing wrong with adding the extra cable from the ground bolt to the ****** bolt, but it really shouldn't be needed. :)
 
Yep, when new and with all pieces in place it worked fine. The original paint and finishes were thin, not overly plastic in nature, and easily bitten through to bare metal when assembling.

It's not just 88 years of rust that can cause problems. "Restoring" with modern finishes leaves you with surfaces that do not easily cut through for electrical conductivity. Leaving off things like engine pans doesn't help, either.

If your total resistance, engine to battery ground post, causes a minor 1/2 volt drop with a 12 amp load you will notice nothing. Engage a starter that wants 125 amps and your voltage drops several volts. Since cranking power (watts) = V x A, the starter will not do much.

So, if your car is over-restored (gasp, a dirty word in fine point circles) you may well benefit from some added heavy ground!
 
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