Exhaust Valve Pitting at Victoria Dozier blog

Exhaust Valve Pitting. Turns out every single exhaust valve seat was. They line it up to a grinding stone and take a little bit of material. Once you start the engine heat will change the valve and seat mating geometry, if the guides. If you grind the valves to get rid of the pitting and are left with little to no margin, the valve is no good. I've asked a few engine builders over the past couple days and one seemed confident that the pitting is caused by the stem seals. Often wider exhaust seats will trap more. A stiff wire wheel doesn’t touch. The back of the valves have like a dark brown almost black coating that is bubbled and super hard. All they do to accomplish it is to put the valve in a mounted motorized stand which rotates the valve at a specific angle. If you want to lap your valves go for it but it accomplishes next to nothing. I drove on this head with a dead cylinder only at idle for almost 2 years and assumed i just had a recessed valve seat. Resurfacing/ cleaning used valves in the process of a head rebuild.

A stiff wire wheel doesn’t touch. Often wider exhaust seats will trap more. Once you start the engine heat will change the valve and seat mating geometry, if the guides. Turns out every single exhaust valve seat was. They line it up to a grinding stone and take a little bit of material. Resurfacing/ cleaning used valves in the process of a head rebuild. If you grind the valves to get rid of the pitting and are left with little to no margin, the valve is no good. I drove on this head with a dead cylinder only at idle for almost 2 years and assumed i just had a recessed valve seat. If you want to lap your valves go for it but it accomplishes next to nothing. I've asked a few engine builders over the past couple days and one seemed confident that the pitting is caused by the stem seals.

Pitting on back side of intake valves Pelican Parts Forums

Exhaust Valve Pitting Turns out every single exhaust valve seat was. I've asked a few engine builders over the past couple days and one seemed confident that the pitting is caused by the stem seals. All they do to accomplish it is to put the valve in a mounted motorized stand which rotates the valve at a specific angle. Often wider exhaust seats will trap more. Turns out every single exhaust valve seat was. If you want to lap your valves go for it but it accomplishes next to nothing. I drove on this head with a dead cylinder only at idle for almost 2 years and assumed i just had a recessed valve seat. Once you start the engine heat will change the valve and seat mating geometry, if the guides. A stiff wire wheel doesn’t touch. Resurfacing/ cleaning used valves in the process of a head rebuild. The back of the valves have like a dark brown almost black coating that is bubbled and super hard. If you grind the valves to get rid of the pitting and are left with little to no margin, the valve is no good. They line it up to a grinding stone and take a little bit of material.