Originally Posted by
Rogeyboy
S1 turbos had sodium filled valves, maybe S2s aswell?
EFi heads are all the same i believe.
I think what you say about the valves is correct, sodium filled exhaust valves for S1 and not for S2.
However, as for the head itself at a total guess I think they may be the same, provided it's another MFI one?
Martin