Date:         Wed, 2 Feb 2005 17:17:25 -0700
Reply-To:     jimt <camper@TACTICAL-BUS.INFO>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         jimt <camper@TACTICAL-BUS.INFO>
Subject:      Re: wrist pins/boston bob
In-Reply-To:  <ENEAIPFPEGLDLDAJHMIEEECHCIAA.rayjen@pnc.com.au>
Content-type: text/plain; charset="ISO-8859-1"

On 2/2/05 2:14 PM, "Ray Hunnam" <rayjen@PNC.COM.AU> wrote:

> Greetings all
> 
> I have been following this tread and would like to give you the benefit of
> my experience.  Firstly you all call them wrist pins we use the old term
> gudgeon pin and yes they do come loose.
> 
> My 2.1 was suffering from a strange noise sounding like a hand full of small
> stones (pebbles ) being rattled around in a tin can.  Only happened on
> deceloration.  Took it to my local VW Dealer who stated I needed a rebuild.
> 
> When I got the old parts back they showed me where the gudgeon pin had "
> Walked " and started to score the side of the liner barrel.  Reason given is
> because the gudgeon circlip had broken ??? allowing the pin to move.
> Gradually the hole elongated resulting in the bottom of the piston skirt
> smashing , hence the small pieces of metal in the bottom of the crank case
> sound like pebbles in the tin.
> 
> The Dealer said he had never seen a circlip go before.
> 
> Anyone interested I have some happy snaps of the damaged to the piston and
> gudgeon taken on my digital.  Unfortunately the shot of the liner with the
> score marks did not turn out.
> 
> Regards
> Ray Hunnam
> Penrith Australia.

I have seen them fail on some built up type 1 engines I did, but what I was
wondering was how someone could tell the difference between the pin sliding
loose and other slap problems, at least until it went crash.

••••••••••••••••••••••••••••••••••••••••
jimt
Planned insanity is best.
Remember that sanity is optional.
http://www.tactical-bus.info (tech info)
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