What is top end and bottom end overhauling
1. Top end is the replacement of cam, lifters, push rods, rocker arms, valves, valve springs, valve guides, valve oil seals, cylinder heads resurfaced, and checked for cracks. (Magna fluxed)
2. Bottom end is engine block resurfaced & checked for cracks, Cylinders honed, crank bearing resurfaced/re-rounded, crank rebalance, new crank bearings. New connecting rods, new rod bearings, new pistons, new piston rings, new freeze out plugs, new front & rear crank seals, new oil pump.
still looking for Rotax 912 Engine Overhaul Manual
×