Ferdl

Hi all, did anyone know the exakt factory angle from the intake and exaust valve giudes at the 993 cylinder head.
I have one damaged head and I could measure the intake angle with 25.5°
The exhaust valve guide is really worn out and my measurement are not really accurate. It could be 30.2° +/-0.3°

And it would be awesome if anyone knows both spark plug angles.

It would be great if someone has this data.

thanks
ferdi