heat sinks and alt repair qiuestion

[rbraun at mail.enter.net]

I got lots of grease, this 5 oz. military tube of the stuff, my worry 
was how much of an insulator is this stuff?  You have about 2 or 3 
sq. inches of copper plate screwed to the alum case with 3 insulated 
screws, probably not alot of clamping force there, I don't really 
know if any metal to metal contact actually exsists to create the 
ground.  100 amp at 14 volt will make alot of heat through a just 
slightly resistive path, will it not?

As to the other question I saw on this subject, I think all heat sink 
compound dries out over time, at least to some extent.

>   Randy asked if any EEs had a suggestion on what to do about 'thermal grease'
> on his Delco alternator . I'm an EE and I owned an alternator repair shop in
> Los Angeles for 25 years .
>   Put the grease on . The design of that whole diode assembly is well thought
> out .You 'may' be able to get some of the right grease from your local starter
> - alternator repair shop. If they dwant to help , I can send you a small
> plastic bag in the mail ( no$ ) . Try to get original delco diodes too . They
> are avalanch diodes in the negative side , to soak up the transients and keep
> your cpu safer from 'spikes' .
> 
>     Jerry
> 
> 
Randy Braun     rbraun at enter.net
91  GTA
82 Firebird