This procedure should be performed after the valves and seats have been machined,
to insure that each valve mates to each seat precisely.
- Invert the cylinder head, lightly lubricate the valve stems, and install
the valves in the head as numbered.
- Coat valve seats with fine grinding compound, and attach the lapping tool
suction cup to a valve head.
NOTE: Moisten the suction cup.
- Rotate the tool between your palms, changing position and lifting the tool
often to prevent grooving.
- Lap the valve until a smooth, polished seat is evident.
- Remove the valve and tool, and rinse away all traces of grinding compound.
