14-10-2018, 12:51 PM
This shows the front bush, with the threaded hole for the fixing bolt from the top of the crankcase, together with the oilway which matches up to the oilway in the crankcase. You can just see the "trench" on the inside of the bush. This runs all the way front to back. The backlash you're looking for in the geartrain is .004" and the endfloat for the camshaft is .002". Lapping the gear onto the camshaft to give 10 to 12 thou will produce this once the camshaft nut is nipped up.