You can always Helicoil it.
Mike
----- Original Message -----
From: "Todd Barker" <barkert@centinela.k12.ca.us>
To: <bholland@hayes.ds.adp.com>
Cc: "Datsun Roadster Mailing list" <datsun-roadsters@autox.team.net>
Sent: Friday, October 26, 2001 1:07 PM
Subject: Re: Broken Water Pump Bolt hole x-mac-creator="4D4F5353"
> The silicone was just a build up from what got on the threads as it passed
> through the hole during installation. What happened is that there have
been
> probably 5 installations, each one leaving a bit more residue.I think that
> when each time the bolt was removed, what ever silicone that was on it was
> left in the hole. Hence the build up over the years. Anyhow, it seems to
be
> fine, there were enough threads left to get a good bite.
>
> Thanks for the info.
>
> Todd Barker
>
> ----- Original Message -----
> From: Brian Hollands <bholland@hayes.ds.adp.com>
> To: Todd Barker <barkert@centinela.k12.ca.us>
> Cc: Datsun Roadster Mailing list <datsun-roadsters@autox.team.net>
> Sent: Friday, October 26, 2001 8:56 AM
> Subject: RE: Broken Water Pump Bolt hole x-mac-creator="4D4F5353"
>
>
> > BMW's factory manuals caution strongly about oil in bolt holes -
> > particularly head bolt holes - for the same reason. Oil, being
> > non-compressible, is well known as a cause of block fractures. If you
> coat
> > bolts with a lubricant before installing them make sure you don't use
any
> > excess, just enough to lightly coat the threads. I'm a little surprised
> > that silicone did that as it is compressible but if there's too much...
> >
> > Brian '69 2000
> > Tampa, FL
> > http://web.tampabay.rr.com/oilleak/
> >
> >
> > -----Original Message-----
> > A strange thing happened to me tonight when I was putting a new water
> > pump on my U20. When I tightened the bolt that holds the water pump to
> > the timing cover/block, the part of the block that forms the bolt hole
> > split off. The bolt was not too tight nor too long. When I took it off,
> > it came out fine. After inspecting it more closely, I have determined
> > that there was a buildup of silicone (left over from some other time) in
> > the back of the bolt hole. When I put the bolt in and started
> > tightening, the pressure blew out the side of of the bolt hole.
>
> ///
> /// datsun-roadsters@autox.team.net mailing list
> /// Send admin requests to majordomo@autox.team.net or go to
> /// http://www.team.net/cgi-bin/majorcool
> /// Send list postings to datsun-roadsters@autox.team.net
> ///
///
/// datsun-roadsters@autox.team.net mailing list
///
|