Hello;
I'm trying to get some measurement data on the intake ports for 911 heads. Specifically 2.0 through 2.7 (including CIS) heads. If anyone could measure any heads that they have, I'd appreciate the help.

This is what I have so far:


2.2/2.4 S heads

Intake Manifold face: 36 mm
1/2 inch in: 37 mm
1 inch in: 38 mm
1 and 1/2 inch in: 40 mm
2 inches in: 41 mm

What are the corresponding measurments for the following heads?

2.0 S (early or late)
2.0 T/E
2.2/2.4 T/E
2.7 "normal" (CIS)
2.7 S/Carrera (CIS) BTW, I know that my existing data for the 2.2S heads already covers the 2.7 Carrera RS.

Thanks!
- John
'69 911E