heat sinks and alt repair question

[T Hergen]

Any recommendation on a heat sink compound (brand name if possible) that
won't run or dry out over time?  I wasn't happy with some stuff I got
at the Shack (no surprise).

Thanks,
Tom

On Mon, 21 Sep 1998 Terry_Sare at dell.com wrote:

> You will fry the diodes if you do NOT use heat sink compound, period. The HS
> grease lowers the thermal resistance of the metal to metal contact. There is
> plenty of metal to metal to conduct the current. If you think there is a
> contact problem, measure it with a good DVM between the diode and the case.
> Should be almost 0.
> 
> Again -- do not skip the heat sink compound.
> 
> ts
> > -----Original Message-----
> > From:	JRECPA at aol.com [SMTP:JRECPA at aol.com]
> > Sent:	Monday, September 21, 1998 11:28 AM
> > To:	diy_efi at efi332.eng.ohio-state.edu
> > Subject:	Re: heat sinks and alt repair qiuestion
> > 
> > In a message dated 9/21/98 9:12:19 AM US Mountain Standard Time,
> > rbraun at mail.enter.net writes:
> > 
> > << The alt on my '91 GTA just puked, it's a CS-130 105 amp, I got it all 
> >  apart and the way I see it the diode package grounds to the case 
> >  through the heat sink compound.  I'm thinking the poor ground thus 
> >  created is adding to the heat of the diode pack and helping to 
> >  cause them to fail.   Should I leave heat sink compound off 
> >  entirely?, or at the end where the output term connects? or add a 
> >  ground wire?
> >  
> >  The base of the d-pack is 3/32" thick copper plate which mounts to 
> >  the alum case of the alt.  Would a copper to alum. mount 
> >  transfer electric and heat better with or without the heat sink goo?
> >  
> >  Any EE's want to give opinions?
> >  
> >  TIA,
> >  Randy Braun     rbraun at enter.net
> >  91  GTA
> >  82 Firebird
> >   >>
> > Be sure to put plenty of heat sink compound back on the diode pack.
> > 
> > I'll bet that your alternator's back is blocked buy engine components
> > that is why the diode pack is overheating, no air flow!
> > 
> > James
>