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-   911 Engine Rebuilding Forum (http://forums.pelicanparts.com/911-engine-rebuilding-forum/)
-   -   3.6 cylinder base leaks (http://forums.pelicanparts.com/911-engine-rebuilding-forum/1139738-3-6-cylinder-base-leaks.html)

Bill Verburg 08-03-2023 06:46 AM
Quote:
Originally Posted by Jeff Alton (Post 12058949)
Bill,

Are you using the 3.6 base seals in the 3.8 block location? I got that sense based off the picture you posted of the 2 o-rings side by side. If so, that may explain. The seal Porsche produces for the 3.8 case is not round in profile, and they are available from Porsche. 999 705 023 41 is the part. Apologies if I miss understood the pic.


Cheers
The pics are oe 3.6 w/ Wrightwood seals, it's back together and dry, knock on wood

my 3.8 has the RS O-ring channel in the case


http://forums.pelicanparts.com/uploa...1691073944.jpg

Jeff Alton 08-03-2023 04:39 PM
Perfect, so you did use 999 705 023 41. Your 3.6 case was machined for the o-ring groove when the spigot bore size was increased, to match an original 3.8RS case, correct?

Cheers

Bill Verburg 08-04-2023 07:20 AM
Quote:
Originally Posted by Jeff Alton (Post 12059911)
Perfect, so you did use 999 705 023 41. Your 3.6 case was machined for the o-ring groove when the spigot bore size was increased, to match an original 3.8RS case, correct?

Cheers
correct

porschedude996 08-13-2023 08:37 AM
Quote:
Originally Posted by Henry Schmidt (Post 11997758)
ThreeBond 1211.
What head studs are you running and what torque?
I never have used 1211, what about Curil-T2 on the base gaskets? Your thoughts?

Henry Schmidt 08-13-2023 09:17 AM
Quote:
Originally Posted by porschedude996 (Post 12066891)
I never have used 1211, what about Curil-T2 on the base gaskets? Your thoughts?
Curil T is our go to when a copper gasket is present. The use of 1211 seems to be a better choice if an o-ring is failing to seal.


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