I made a few sets for some race engine builders and learned a lot in the process helping me design mine from 2" 1018 steel. Having .0001" bore gauges available for measurement with and without it mounted I observed out of round up to about .002". Most definetly will be using it on my future builds. PM me if you want to borrow it.



1952 1300 Canadian 1/2 ton restomod
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