I don't put any faith in the position of end gaps.
There is nothing to hold them, they are free to rotate wherever they want. I know, stagger them in installation, but what happens when it is running?
What is important is piston skirt clearance, round, ring end gap, land width clearance, pin clearance, everything you would normally check on a rebuild plus any weird manufacturing defects.
I once bought a new, from the dealer, 250 chevy 6 block with pistons and rings. The pistons had to come out to have the pins pressed. Pushed all but one out, it had to be hammered out! Press fit in the block! Sent the whole mess back for another.
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Today's Featured Article - Product Review: JB Weld - by Staff. JB Weld is basically an epoxy glue that does an exceptionally good job of bonding to cast iron and steel along with several other materials. As I mentioned, it is so common that I have yet to buy a tractor that did not have JB Weld used somewhere. It is sometimes used so well you can't tell its there and other times used as a sloppy quick fix. Finding where and how it can be used correctly is key to whether you are using it as an "inelegant hack" or an integral solution to difficult and expens
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