Quote:
Originally Posted by columbiA
That #5 valve seat appears to have a crack about 1/4 the way around facing the cyl.Maybe if an insert was large enough,it would eliminate the crack.The sleeve looks fairly thick so it is likely STD bore. If the cyls & pistons are in good shape then you could rering it.Many engines are totally rebuilt when its not needed.
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I think what you are seeing is the area I suspect to have been an early weld that has been dressed down.