Topica Loopframe_Guzzi Archive


Subject: RE: New Guzzi Eldo owner

Author: Robert Hawkes

Date: Apr 4, 2005, 6:32 PM

Post ID: 1718648309



Roger, Lapping is easy. Take your heads off the bike, take the springs off
the valves, this is hard unless you have a valve spring removal tool, but I
use a giant C-clamp, then the valves are free. Go to auto parts store and
take the heads with the valves to the store if you like and ask them but if
you are the shy type, like all the guys on this list (yeah, right!), then
just ask the store guy for some lapping compound and a valve turning tool
(can't remember the name of this thing, wooden handle with little suction
cups on the ends). Pull the valve out and spread a little lapping compound
on the valve where it meets the head, put the valve back in the valve guide
and let it meet the valve seat. Then turn the valve with the little wooden
suction cup tool. You will hear the grinding as you turn the tool. In time
this will sort of polish up the valve and the valve seats. By the way
lapping compound comes in course and fine grit, so start with course and
move to fine. You are done when both valve and seat are nice and smooth
looking. Easy job, may take a hour or two. Only do lapping if your valves
don't need actual grinding. Check the seats too. Lapping is OK to do if
you just need to touch up your valves. Good luck, Bob

-----Original Message-----
From: oger wells [mailto:jambo-@yahoo.com]
Sent: Monday, April 04, 2005 3:50 PM
To: Loopfram-@topica.com
Subject: RE: New Guzzi Eldo owner

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"...you can lap them yourself for cheap"

Excuse me be what is lap and how do i do it? The valves look intact but
i have not removed them yet so i dont know if the seats are bad. Lots
of carbon build up which make me think this is why the bike was taken
off the road a long time ago. I dont see any peeling of the cylinders.
They look good me. I would like to have a guzzi expert take a look at
them and the pistons, cam, etc. for they seem good and i dont have a
micrometer and i am new to the guzzis.

Thanks for the advice

Eric

brian c wrote:
 
Since the motor is apart, definitely check the cylinder walls- if they
are scored badly/ peeling ,etc, you will need to replace them and I
suggest the Gilardoni sets from MG-Cycle- with pistons and rings too-
more economical than sleeving.

I use a small plastic bristle brush and engine degraser to get the
carbon deposits off- if there are no chunks missing from the valves and
the seats look good you can lap them yourself for cheap-

I would get the carb rebuild kits.

Make sure the cylinder heads have good threads for the exhaust headers.

Put some inline fuel filters on when you replace your fuel lines.

Check the u-joint condition and the rear wheel splines

if you are splitting the engine/tranny you can check the clutch, starter

ring gear etc.

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