Topica Loopframe_Guzzi Archive


Subject: RE: Blow-by on the Eldo - ride it or fix it?

Author: halc-@comcast.net

Date: Aug 1, 2005, 5:52 AM

Post ID: 1719235146


I had the same problem

The breather box is new. The pistons and cylinders looked "good" when I had the motor open BUT a 6 mile 80 MPH ride blew a quart + of oil out the breather. The only cause for that kind of oil loss out the breather is piston blow caused by pressurization of the case. A leak down test proved I was correct in the diagnosis.

So If you doing the pistons have the heads done also.


Tom
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mine does exactly the same, so I'll be following this with interest!
seems to improve once the oil level has dropped, but I'm just a bit
paranoid about running round with it only halfway up the dipstick..
Neil.

Tom Christian wrote:
 
Guys - need a second opinion. After cleaning and ensuring
the flapper valve on the breather box ('74 disk Eldo) is
working, I'm still getting oil from the breather box tube.
The frame crossbars back of the breather tube are wet,
and it always leaves a few drops of oil on the floor where
I park it after riding. There is no ball check valve.
There is no "blue smoke" in the exhaust, but the right
side plug is a bit oily, so I'm assuming its probably just
worn rings. Its using some oil - enough for me to
determine on the dipstick after 150 miles or so - but I'm
not sure exactly how much. If I've got to tear down the
top end, I might as well take the opportunity to put in a
Nikasil kit.

Its not showing any other symptoms, no leaking, no running
issues, idles fine, etc. Is it safe to ride it through
summer without risking more damage, or should I do the
Nikasils now? I'm leaning toward's doing them now, since
it really isn't that big a job on a old Guzzi (at least it
doesn't appear to be for the unindoctrinated).

Thanks, -tom

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