10-09-2018, 07:04 AM
If you use a single point cutter pushed down against a stop, can put a dob of solder on the shaft for a snug fit and little tendency to chatter.
As previous considerable caution is needed with the steep cutter or the seating is moved irrecoverably too far up the original valve face.
About the only way to absolutely check concentricity is a neat fitting dummy valve machined in one setting or a dial gauge on a neat fitting mandrel.
For other cars I have made a range of dummy valves from mild steel threaded onto rods and turned. When used as a lap restored between centres or equiv.
As previous considerable caution is needed with the steep cutter or the seating is moved irrecoverably too far up the original valve face.
About the only way to absolutely check concentricity is a neat fitting dummy valve machined in one setting or a dial gauge on a neat fitting mandrel.
For other cars I have made a range of dummy valves from mild steel threaded onto rods and turned. When used as a lap restored between centres or equiv.