Technical Tips For Aston Martin Engines
Technical Tip #1
Dropped Valve Seat
A dropped valve seat can be due to incorrect insertion of the valve seats. The correct interference fit should be applied when fitting valve seats, otherwise you could be greeted with scenes like this.
Technical Tip #2
Flanged Seat Area
A flanged seat area is due to incorrect insertion of the valve seats. If the heat/freeze treatments are not carried out on the cylinder head and valve seats then the edges of the cylinder head valve seat locations can become bevelled and pushed down under the valve seat.