Lapping in valves

Y'all need to settle down, I've lapped several heads with permatex and they came out real good.

I'm a firm believer in the backyard hone, re-ring, bearing, lap and go. Contrary to the majority of thought around here, not every job has to visit a machine shop. Some folks want the experience.


Start with heavy compound, act like your starting a fire with a stick, lift and tap ever 5 seconds to keep the compound in the valve, and when the grit stops working, inspect the valve.


Once the valve looks uniform switch to the lighter grit, and do the same action, you'd find out the grit stops working when the surface finish is where it needs to be.

Go back and forth between grits until it looks uniform and clean.

Inspect the valve and make sure there aren't any pits in the valve or the seat that aren't smoothed out real nice.