Bearings that have lost there crush and just fall out , or hardly clip in are a sure as Dung sign of detonation!
Combine this with grit from failing parts and you end up with a motor that looks unfortunately like yours Sam!
As posted you need to check how the piston pins feel and see how beat up there skirts may be from grit, I would guess there is no one in your neck of the woods who can properly polish a cast Crank no less cut one?
Cast Cranks need to be polished in a certain rotational direction if you do not want new bearings to get chewed up by what looks like a surface that is perfect.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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