A valve grind (commonly referred to as a valve job or valve lap) can be crucial for proper functioning valves/seals. It is the process of smoothing out the engine valves so that they are effectively able to seal in the valve seat in the cylinder head to completely seal the engine's combustion chamber.

What is valve grinding machine?

A Valve Seat Grinding Machine is an operation which is performed on any four stroke cycle, internal combustion engine, the purpose of which is to resurface the mating surfaces of the poppet valves and their respective valve seats that control the intake and exhaust of the air/fuel mixture that powers the motion of the ...

Can you grind valve tips?

It is fine to grind the stems. This is normal practice. Machine shop should be able to adjust them either with shims or by grinding the valve stems down.