Yes it does look like a crack below the top ring.
And here’s two other things.
The rings used are not even up to factory quality.
I see only a Moly top ring on those pistons where as the factory rings where a far better Moly face top and second ring.
The rods are old type that still have the unnecessary oil hole spurt hole in the parting line of the big end.
Moly face rings need to be installed very carefully so as to not scratch there face and the cylinder wall finish must be what’s needed for such a ring face.
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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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