Originally Posted by
mechanic28
think its just a fast road one u can use with standard lifters etc!cvh22 i think??
i got a stage 2 head from burtons for my mk2 xr2 around 6 years ago!i was not impressed!was told that it had the modified stem seals so did not bother too check,fitted head and it smoked like a bitch!only to find it had the old style stem seals !and the valves were not lapped in!
The valve seats were probably cut on a Serdi machine or similar where you shouldn`t lap the valves. Lapping them destroys the seat, they work beautifully if cut correctly and vacuum tested afterwards.