Valve question

I have a set of 64 and a set of 65 heads. All but three have the valves. I bought a couple to complete the heads, but I think I bought the wrong ones.

Exhaust valves seem to have a 38mm diameter and AUS KO P82 stamp, and the intake valves have a 34mm diameter.

What should be the original specification for a intake- and exhaust valve on a 64/65 head?


Attachment 512825

Attachment 512821

Attachment 512822

Attachment 512823

According to this thread exhaust valves shoud be 35mm?

Quote:

---

Originally Posted by Jesse-911E 1969

What should be the original specification for a intake- and exhaust valve on a 64/65 head?

---

Einlaß 39 mm
Auslaß 35 mm

Jon B.
Vista, CA

Thanks Jon! Any idea what valves I have bought?

Quote:

---

Originally Posted by Jesse-911E 1969

Thanks Jon! Any idea what valves I have bought?

---

Jesse, I can't think of any Porsche engine with a 34 mm intake valve. Even 356 with 1600 cc engines had 38 mm intake valves.
A 38 mm exhaust valve was used in various Porsche engines from 1967-1972, including 911T, E, S and 914/6.

Jon B.
Vista, CA

Ok thanks!
I will look for the correct valves ����

Here's a chart if it helps.
Attachment 513036