10 October 2015

Digging into the Guzzi

Since I have receipts for work that included new pistons, cylinders, top-end job, connecting rod bushings, oil system check, and pretty much everything except for cleaning out the sludge trap, I figured I'd dig in a little to see if it was true.

Cylinders are the original chrome plated type. No signs of peeling, piston does look fairly new. Thinking I'll likely get the cylinders re-lined with Nikasil and keep the existing pistons to avoid the engine self destructing later.

More carbon on the heads than I expected to see. Exhaust valve looks a little recessed as well, will check compression later and take them into a machine shop if needed.

Engine separated from trans. Trans definitely leaking gear oil, starter appears to be in good shape with fresh grease on the bendix drive.

Rear splines at final drive, not good.

 Rear splines at hub, almost non-existent

This leads me to believe that the bike doesn't really have the 19k that was indicated on the odometer, far more likely 119k. Also, given the amount of work that was done to the top and bottom ends in the 70's, I assume this engine had a seizure at one point which makes me wonder about the condition of the sludge trap. Looks like I'll be diving in deeper. Don't know what I'm going to do about the rear drive just yet, it looks like you can still buy splines for the final drive portion, but not the rear hub.

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