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ok...rocker cover shows no signs of problems. Put a bore scope down both cylinders (yes I have access to cool toys). With pistons at BDC no signs of scoring of any kind. Cylinder walls shine so well you can see the reflection of the top of the piston. Back piston looks great. Top surface of front pi...

Update: Performed a leak down test both cylinders. 100 psi in / 94.5 maintained pressure both cylinders. At least I am more confident that it is nothing major. Crank breather circuit clear.......I am going to pop the rocker covers off and double check to make sure the breather valve is not stuck in ...

Breather tube and labyrinth are clear. Will get her down off the lift and take her for a spin to metaphorically blow the cobwebs out and see if the problem persists. On the matter of a broken piston ring (eeek), wouldn't I see issues with compression? I tested compression very early on and have ~130...

My 78 3 1/2 recently started to see more and more oil flow through breather tube on the top of the valve covers. I am suspecting possible valve guide wear. Any other thoughts on the matter, the bike has ~11k miles (18k KM) I have not been able to find any threads on the list pertaining to head probl...

Looked thru previous threads on the subject of timing belts. I Found a Mcmaster Carr part number 6484K244 that matches previous specs. (FROM PAST THREADS) Trapezoidal Tooth Neoprene Timing Belt 3/8" Pitch, Trade Sz 124L, 12.4" Outer Circle, 3/4" W Just thought I would float this for v...

My name is Derek, I live in Orlando, Fla. USA. I recently purchase a 1977 3 1/2 strada. Love this thing !!!!! I have a garage full of assorted makes. This one is my new favorite. Guzzis, Beemers, Italjet, Benelli,.........gosh I tink I need a Harley. Hopefully I can gather some usefull tips. I know ...