Here is the first engine we are working on. The challenge here was to remove the pinion gear. It is a taper shaft with key fit. There is extremely very little space between the gear and case to get a puller in. My machinest made a puller. Next is to separate the flywheels to inspect rod, crankpin, and bushings.
A different spare engine didn’t come apart quite so nice. Here is the cylinder:
However the good news here is the valves, lower end, piston and tod all look great. So all in all we are in great shape.
Is top picture engine from Fred? Sounds like good news!
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Top picture is from spare engine #1. Bottom picture is from spare engine #2. Original engine still in the bike.
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