Topica Loopframe_Guzzi Archive


Subject: Re: Piston Problem

Author: mike skaggs

Date: Aug 30, 2000, 8:20 AM

Post ID: 1702166163


I "believe" the spigot part of the cylinder will not fit into the Eldo
case....there is also the balance issue....

Mike
----- Original Message -----
From: Brendan Swords <bmsw-@cs.com>
To: <Loopfram-@topica.com>
Sent: Wednesday, August 30, 2000 7:36 AM
Subject: Piston Problem


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Hi,

I'm new to this list - very informative so far - thanks.

I'd appreciate any advice/opinions on my problem. I have a '73 El Dorado
which I'm in the process of restoring. (See attachment). I've got it
running
 great, with one exception: a loud "tapping/banging" noise from the right
cylinder above 3000 rpm. I thought it was a valve train issue, so I
replaced
 the rocker arms, which were a little wobbly feeling, and put new bushings
in
 them. That didn't help much, so now my belief is that it is piston slap. A
couple of people confirmed my opinion - and the fact that the noise
diminishes when under load, either accelerating or decelerating, seems to
bear this out. In any event, I'm prepared to replace the cylinders and
pistons. I've located a lightly used set (on ebay) that are billed as
1000cc
 @ 88 mm bore. My question is - will I need to do anything significant to
the
 heads or carburetors to accomodate the increased displacement, or should
it
 just be a case of installing the new cylinders/pistons and making
mixture/idle adjustments? Anything I should watch out for in the
disassembly/assembly process or is it staightforward?

Informed advice would be greatly appreciated.

Regards,

Brendan Swords
Wilton, CT
'73 ElDorado
'77 BMW R100S

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