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-   -   Torque specs / loctite for 3.2 studs and AC bracket hardware RH side (http://forums.pelicanparts.com/porsche-911-technical-forum/1137565-torque-specs-loctite-3-2-studs-ac-bracket-hardware-rh-side.html)

BrakeL8 04-02-2023 09:00 AM

Torque specs / loctite for 3.2 studs and AC bracket hardware RH side
 
Hi-

Upon removing motor to do fuel lines/tunnel as well as a ton of while it’s out projects one of these studs had broken. I’ve extracted and removed the other to completely replace along with all new nuts/hardware for the triangular piece of aluminum here that anchors in the main compressor mounting.

I can’t however find torque specs nor do I know whether I use loctite or similar on the studs going into the block.

If anyone could share some tips I’d be most appreciative! First time for me here.

Enjoy the weekend Pelican friends!http://forums.pelicanparts.com/uploa...1680454871.jpg

Fab64 04-02-2023 10:46 AM

From the Bentley manual. I couldn't find anything regarding the studs into the head (camshaft case).

http://forums.pelicanparts.com/uploa...1680461107.jpg

Dpmulvan 04-02-2023 12:59 PM

M8’s 25nm, M6’s 10nm.

thetorch 04-02-2023 02:54 PM

I would use a touch of blue loctite and set them to the proper height, not based on torque specs. You can check to make sure you don't exceed the torque spec if you are worried about that. Do not bury the unthreaded portion of the studs with force!

The depth is given in the PET. So for example an 8 x 35 stud is an M8 with the exposed side showing 35mm above the case ... I believe. Someone can correct me if I am mistaken with the spec here.

Here is a thread on this subject.

http://forums.pelicanparts.com/911-engine-rebuilding-forum/1019311-911-engine-case-stud-studs-install-torque.html

BrakeL8 04-02-2023 05:54 PM

Quote:

Originally Posted by thetorch (Post 11962704)
I would use a touch of blue loctite and set them to the proper height, not based on torque specs. You can check to make sure you don't exceed the torque spec if you are worried about that. Do not bury the unthreaded portion of the studs with force!

The depth is given in the PET. So for example an 8 x 35 stud is an M8 with the exposed side showing 35mm above the case ... I believe. Someone can correct me if I am mistaken with the spec here.

Here is a thread on this subject.

http://forums.pelicanparts.com/911-engine-rebuilding-forum/1019311-911-engine-case-stud-studs-install-torque.html

Thanks so much!

Cevan 04-03-2023 04:08 AM

On my ‘86 they measure 24.6 mm.

yelcab1 04-03-2023 06:48 AM

You don't need to tighten the studs very tight at all. They will hold just fine if they just sit in place with enough depth. I would just insert the studs until they bottom out and stop.

BrakeL8 04-04-2023 07:24 PM

Quote:

Originally Posted by Cevan (Post 11963000)
On my ‘86 they measure 24.6 mm.


Thank you!


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