Hello, All.
Picked this up from the digest. Comments added.
Date: Tue, 07 Mar 2000 21:05:48 -0700
From: Joe Curry <spitlist@gte.net>
Subject: Re: * Shiny bolts and timing cover booby *
wbrazinski wrote:
> 1) Is it possible to make the old grungy bolts nice and shiny without
> hand polishing each one?
No
Beg to differ here. I've used 'barrel plating' in the past, which is zinc
plating (passivation) w/o polishing. It comes in silver, gold and black. The
bolts were not easily replaceable and not for HD use (e.g. steering). Also
had some brackets done.
Another choice was unpolished chrome-the parts were simply chromed after
blasting, which made them look like zinc plated but shinier. Hydrogen
embrittlement could be a problem on HD application bolts.
> I know that some feel I should not re-use the
> old bolts because they may not be "good" anymore. Is this true?
Not necessarily, but if you replace them, you won't have to worry about
the first part!
I'd suggest that the use of High Tensile bolts for timing covers and the
like is OTT anyway. Rule-of -Thumb: If in doubt, replace!
> 2) I accidentally scraped off the acoustical material on the front of
> the timing chain cover. It was buried beneath the "gunk" and before I
> knew it it was gone! Any good ideas on how to replace it?
Don't! The stuff is ugly and there is nothing like the sound of a good
timing chain!
Quite agree. However, the stuff looks like some sort of setting Mastic so
any heavy and reasobaly heatproof wodge should do.
All the best,
Dave Hill
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