i have been reconditioning my mpi head, Prior to lapping i used the fine compound and a few turns to see how well or bad the valve was sealing. as you can see there are 3 dark areas showing the valve had not been sitting fully and leaking, despite the valves and seats having been machine cut when it was 1st assembled. the valve itself doesn’t look to good either, this was seen is in various levels accros both the inlet and exhaust valves and not rely supprising i suppose as the head has had 5+ years of use
pitting on the valve more evident now the top layer of deposits are removed
Inlet valve example
After lapping the valve and seats with corse then fine paste now look like this
And an inlet valve picture
my question is how much more grinding do i need to do with the fine paste or does it look like its enough now?
