NHRA Stock Replacement Piston Question

[dwydendorf]

NHRA has a way to check how far down the top ring land is without removing the piston. They have a small piece of steel almost thin like sheet metal that they put between the piston and cylinder wall. They know the size of the piece so they simply measure how far it sticks up over the top of the piston and subtract that from the known size of the metal piece and you know how far down the ring land is. Travis Miller showed it to us a few years ago.