Topica Loopframe_Guzzi Archive


Subject: Re: cylinder/piston advice needed!

Author: andy hill

Date: Sep 10, 2001, 12:14 PM

Post ID: 1708179907


dave-
yeah, same heads. i never got my T-3 heads machined [gotta open up the
exhaust ports to 1 1/2] & machine a set of bushings to hold the exh. pipe
in. prolly replace the valve guides too.
can't see anything wrong with the ambo heads- i lapped the valves,
checked the springs, etc. [maybe a hairline crack? but see no evidence of
it, ala carbon tracking]
driving me nuts!
andy
----- Original Message -----
From: "David J. Otis" <dj-@dotis.com>
To: <Loopfram-@topica.com>
Sent: Sunday, September 09, 2001 09:35 PM
Subject: RE: cylinder/piston advice needed!


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are these the same heads you had on the Ambo engine? Do NOT hone anything!
The pistons/cyl's are just fine as is. If they are the same heads, you have
to look thee for the problem.

-----Original Message-----
From: andy hill [mailto:gun-@lynnet.com]
Sent: Sunday, September 09, 2001 4:38 PM
To: David J. Otis
Cc: loopframe
Subject: cylinder/piston advice needed!


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hi dave-
after getting kermit outfitted with the new engine/trans., i went out for a
ride today- real nice, but the torque just wasn't there [STILL!] so i came
back home and grabbed the compression guage. crap!!! 120lbs., left cyl., 150
rt.cyl........
question- i lubed the cyl. walls with a liberal dose of stp engine oil
treatment before sliding them over the pistons. is it possible that this
sticky stuff has prevented the rings from sealing? i was gonna assemble them
dry [figuring the nikisil is hard stuff & could take it] but d. richardson
reccommended against it. i did lap the valves, so this is the only thing i
can think of. if so, i guess i gotta tear it down again @#$!!%&(%!! and hone
[?] the cyls.???
any advice is needed& wanted, with thanks!!!!!
andy

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Explore the jungle in your backyard -- FREE! eNature has
bird sounds, Animal Finder, Field Guides, experts, activities
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