Want this question answered?
assuming that you have new cylinder liners and pistons or old pistons with good ring groove conditions, piston rings come with the correct/specified clearance when bought new.
There is no clearance of the ring to the block. The ring works in contact with the block to seal the combustion chamber and provide oil control.
The clearance between a wear ring and the impeller is quite small to prevent blow by. This keeps the system efficient without causing additional wear or friction.
Clearance Appearance
Piston ring gap.
You shim the starter motor if there is inadequate clearance between the starter drive and the ring gear. You can check the clearance by prying the starter drive out to the ring gear with a screwdriver to see if the gears mesh properly.
The Ring of Fire.
A ring from Kay Jewelers can cost anywhere from $34.99 for to $12.114.15 depending on type of metal, gemstone, and style of the ring. Rings can also be bought on clearance for lower prices.
There is no specific meaning behind the three stones on the ring. The ring itself is usually an anniversary ring.
The way the question is phrased the answer is zero. But I suspect that you mean ring gap, and rule of thumb is .002 inches per inch of bore.
Slide one of the compression rings down into the cylinder and measure the gap with a feeler gauge.
The starter is probably not aligned with the flywheel. The clearance between the starter and the ring gear needs to be checked.