unleaded gas vs non hardened valve seats | The H.A.M.B.
The correct setting is to locate the seat at the center of valve face. Than transfer this setting to the cutter head to set blades, here again set the point at top side of seat angle. Make sure you use a pilot with same diameter as the valve stem, this is very important. Observe the point is at the corner where top angle and main seat meet.May 14, 2020 · Cylinder heads typically require guide and seat work to restore compression and oil control. For the valve to seat properly and to gain the most power and efficiency, engine builders must replace or bring back to spec all valve seats and guides. Seats that are cracked, loose, sunken or otherwise destroyed must be replaced with new.