Subject: Re: cylinder/piston advice needed!
Author: Ian Adkins
Date: Sep 9, 2001, 7:56 PM
Post ID: 1708171457
Andy,
Were the replacement cylinders new? When I rebuilt mine I used the same STP
stuff. The engine was strong from the getgo. What was the tolerance on the
pistons?
I doubt that the cylinder will need to be honed. I would first verify that
the compression test was done right and is accurate. After that I would do a
"leak down test" to determine whether the problem is in the cylinders or the
valves.
I hate to say it but the valves could be bad.
One other thought.....maybe the piston/cylinder set wasn't matched???? (i.e.
you got a A piston and put it into a C cylinder?).
By the way......12 days to the MD Rally. Let me know if you want me to get
the other Ambo or the Convert ready for you :-)
Ian
-----Original Message-----
From: andy hill <gun-@lynnet.com>
To: David J. Otis <dj-@dotis.com>
Cc: loopframe <Loopfram-@topica.com>
Date: September 9, 2001 4:46 PM
Subject: cylinder/piston advice needed!
hi dave- after getting kermit outfitted with the new engine/trans., i went out for |
| 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., |
| 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 |
| 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 |
| [?] the cyls.??? any advice is needed& wanted, with thanks!!!!! andy |