went to start lapping in my valves last nite and i got a bit of trouble.
where i cleaned up the exhaust valves - when fitted to the head u can see light thru the sealing face
inlets seem ok - but they were easier to clean up.
its only the exhausts as i used some fine emery cloth to clean them back.
question is how good is valve lapping paste - will it straighten it up or do i need to recut the valve? its not too bad but if u shine a torch down the port light comes out in some places
if recut can i just do this on a lathe? whats the angle of cut?