The Valve Seat Insert is the surface that the intake and exhaust valves sit on when the valves are closed. The Valve Seat is a critical component in the combustion process, if the valve is not seating correctly it can cause combustion gasses to leak, reducing compression.
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The Valve Seat Insert is the surface that the intake and exhaust valves sit on when the valves are closed. The Valve Seat is a critical component in the combustion process, if the valve is not seating correctly it can cause combustion gasses to leak, reducing compression.
