Hey guys,
got some head work done and this is what they did anyone know if this is stardard or worked a little?
Valve Inlet cooper 998 (1.219")
Valve Exhaust OVS 1 1/16" 803-1100
Valve Guide All A Series (VG804)
K-Line Valve guide Insert
Valve Stem Seal Clip On 1275 & late
Valve Cotter-Long Groove Type
Surface Head(inc. Mach. Extra Off)

Whats the casting number on the head ???

Those valves are larger than standard for a 998 but since the heat is thirty odd years old there could be any number of reasons for that such as normal reconditioning.

The shape of the combustion chamber and the inlet and outlet ports gives a much better idea of head work for performance purposes Do you have any photos ???


Mike