Topica Loopframe_Guzzi Archive


Subject: RE: Mystery engine noises

Author: Jason Telford

Date: Aug 7, 2005, 6:54 PM

Post ID: 1719263595



You might also consider big end or small end bearings. They knock like
you describe when they start to get worn.
J
Edward Walton wrote:
 
Hi guys
This is a 73 Eldo that I have been working on since the winter. Had the
engine out replace all seals timming chain & tensioner lots of other
work and upgrades. After first getting the eldo on the road, eldo went
like hell & sounded good but started pumping oil out breather tube. Had
165 psi and 140 psi. Pulled 140 side off, broken top compression ring,
it had been in there for a while no damage to chrome bore but piston
ring slot looked enlarged a bit. So I put a used chrome bore cylinder
set on. Had 165 psi both sides now. No more oil comming out the breather
allright!!
It lasted two weeks and started burning oil. So pulled it off and found
pits on chrome bore just starting to appear, so i figure no use putting
new rings in with chrome starting to go! Shit!!!
So reinstalled original piston and cylinder set with new rings { like I
should of in the first place} and good compression and no oil out the
breather, allright !!
Now I have a wierd noise that sounds like a bad or loose
valve lifter.You cannot hear it when excelerating or decompressing , but
steady running at 35 mph and up you can hear it. I run 0.008 inch
clearance exhaust and intake valves , so valves are noisey.
I reset the valve clearances to 0.002 inch and same noise at the same
times.
I thought the noise was there with the other top end and just needed to
adjust the valves but i cannot be shure of that
Do you think I screwed up the rod bushing or could the extra piston slot
gap make this noise ?? Could their be something wrong with the cam and
lifters ??
Any advice would be much appreciated !!

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