special tool

I would like the installed factory-installed headstud height above the block.
These would need to be the original studs.
I would appreciate an actual measurement, not something read on Rennlist.
Thanks guys.

Ski

73mm is about the average. I've had two other blocks, one was 74mm and one had three different height, 72, 73 and 74. I've used 73mm for the past three builds, gets you about 2-3 threads out of the factory or aftermarket head nut/washer.

Did you ship the pan yet?

Jeremy Himsel

74 for me.

samluke

I just measured my spare TurboS motor. Factory original, never touched and got 72mm.

special tool

Thanks guys.

Ski - yes.

Very interesting that the turbo S's use more of the existing block threads.
I have heard this before.
Interesting.

Tom M'Guinn

My (non-S) factory block measured just over 72mm as well.

marcoturbo

Does anybody know why Porsche doesn't provide any specification about head studs height ?

SeaCay

74mm on one of my older blocks ('87 turbo).