Topica Loopframe_Guzzi Archive


Subject: Re: Timing Chest Off- cam shimming

Author: Alan Dunphy

Date: Sep 25, 2002, 6:32 AM

Post ID: 1711081350


Kev,
Guzziology, Dave Richardson, Talks about cam shimming under the
heading "Limiting big-twin cam nock" and gives part numbers for shims, but
he does not mention a target clearance. .002-.004" sounds like a good target
to me, enough to prevent friction and galling and also limit movement which
will cause minor timing fluctuation and knock.

Alan
'74 Eldorado LAPD
MGNOC 4352

Alan R. Dunphy
adun-@midmaine.com
Pittsfield, ME 04967-1426

----- Original Message -----
From: "Kevin Graf" <kgr-@midwestpension.com>
To: <Loopfram-@topica.com>
Sent: Wednesday, September 25, 2002 8:33 AM
Subject: RE: Timing Chest Off- cam shimming


 I don't want to confuse any issue but.... does anyone have a spec (or
general consensus) one the freeplay(back and forth) on the cam? I ended up
shimming the one on my pals eldo. I didn't have a dail gauge so it was all
done with my calibrated eyeball. It just looked WAY TOO sloppy to me. This
was left over from my H-D wrenching days. I think I ended up shimming it
to
 acheive a .002 - .004. Still holding good so far. Anyone eles ever do
this?
 
Kev

P.S.
I think I have a cam if you need one Keith. It's a bit used, but hell,
it'll
 be free.

P.S.S.
some rat bastard stole my valve caps!!!! what the hell's wrong with
people!
 join the human race or get out!


-----Original Message-----
From: Keith Ruff [mailto:klru-@fcc.net]
Sent: Tuesday, September 24, 2002 4:31 PM
To: Loopfram-@topica.com
Subject: Timing Chest Off


Broke the nut loose on the crank, got the timing chest off, nada to be
found as far as I can tell. All teeth on the gears look fine. There is
some minor movement on the oil pump gear, but nothing that would cause
the clatter I am hearing. Ordered up a new cover gasket and crank seal
for the cover and will re-assemble. Checked the valves and they appear
OK, clearance is right on the money. Did notice the left plug was
blackish and slightly wet while the right one was perfect, could just be
a carb adjustment on the left side. Have no clue what to do from here
except hand this off to a professional. I wish somebody lived nearby
who could stop by, take a listen, and tell what the clack is wrong with
her. Perhaps it is the rod bearings, who knows. I give up.

Keith Ruff
71 Police Ambassador - NJ

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