That's from heating them to press the pin in and getting them hotter then needed to get that job done!
Now the Rods temper in that area has been changed and it's surface layer will be more proned to cracking.
Is such a issue? I guess it depends on the motors stroke ( G force loads ) and intended rpm range.
I myself would not chance using them in a motor of 4.210" stroke or greater at anything more then 6800 rpm.
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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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