Topica Loopframe_Guzzi Archive


Subject: Re: Noise

Author: Ian Adkins

Date: Jun 1, 2001, 9:44 AM

Post ID: 1706952473


Hi All,

I have two Ambos...a 69 and a 70. The 70 has about 500 miles on the new
engine.

The valve clatter on the 70 is a bit louder than on the 69 (with 30k on the
engine). When I measured the valve clearances the 70 is loose on the feeler
guage (I set intake 6 and exhaust 10). What I mean by that is that the
feeler guage makes contact but slides easily. On the 69 the feeler is a bit
tighter.

I'm not sure but do you think that the little differences noted would make
the difference in the clatter?

By the way...both bikes run tops.

Regards...Ian

-----Original Message-----
From: Charles Mullendore <C.D.Mul-@worldnet.att.net>
To: Loopfram-@topica.com <Loopfram-@topica.com>
Date: June 1, 2001 11:20 AM
Subject: Re: Noise


 
Hi Greg,
I don't hear much sound from my timing gears (I believe they are helical
cut)
 but plenty of whining from the transmission when in 4th. The valves on my
old
 '69 Ambo are barely noticeable at speed (with a full-faced helmet and
windshield), but a customer's Eldo I just finished doing a top-end rebuild
on
 has quite a bit more noise. In his case the original rockers are worn where
they contact the valve and the used set I put in have slightly worn
bushings.
 Most Loopframes that haven't been rebuilt or otherwise "fettled" have a
little
 more noise than the "T" and later bikes. In other words "these motors are
typically ticky". Better to hear the valves and know they have clearance,
than
 to not hear them and burn a valve due to being too tight. Have fun! Cheers,

Charlie
3 Ambos

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