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Re: Split Torque Tube Rebuild
Posted: Sat Jan 25, 2025 5:42 am
by barnwerks
Bergerac wrote: Thu Dec 19, 2024 12:58 am
I am a little concerned since I will be pushing into the high 400s that the TT will twist and pop those welds, well see I guess.
I'll suggest that the torque tube is actually not loaded in torsion but rather in bending. It is a moment arm, countering the axle rotation, so will be bending much like a beam, but upward (opposite of a conventional beam). The slit opens when the bottom of the tube (beam) is loaded in compression. For a great example of this force, watch the body movement of a top fuel dragster under acceleration.
Re: Split Torque Tube Rebuild
Posted: Sat Jan 25, 2025 9:37 am
by cda951
Are you doing anything to pin the front bearing in place, or just hoping the welds will do the job?
Re: Split Torque Tube Rebuild
Posted: Mon Mar 10, 2025 1:30 pm
by Latitude48
cda951 wrote: Thu Jan 23, 2025 8:35 pm
Hi @Bergerac ,
Any updates on your progress? I am now faced with the prospect of attempting to rebuild my 944S2 cabriolet split torque tube or attempting to locate a good solid version and hope the vibrations aren't too bad. This car is a super smooth cruiser with zero pretensions for performance use, I have a modified 951 for that purpose.
Thank you!
In 2021 I purchased a new non-split Center Tube, 944-421-012-02, from Sunset Porsche Parts and had it installed locally. Glad I got it when I did as it's a discontinued part now. I haven't noticed any additional vibration in my S2, so if you can find a good non-split tube, I'd opt for that.
Re: Split Torque Tube Rebuild
Posted: Mon Mar 10, 2025 3:48 pm
by Bergerac
- Screenshot 2025-03-11 064432.png (80.58 KiB) Viewed 5014 times
Good luck getting one from Porsche, that quote was in Australian dollars, so approx US$2900 for an exchange unit
cda951 wrote: Sat Jan 25, 2025 9:37 am
Are you doing anything to pin the front bearing in place, or just hoping the welds will do the job?
I honestly think any attempt to pin it is more likely to misalign it than allowing it to settle into the TT where it needs to
Re: Split Torque Tube Rebuild
Posted: Thu Oct 23, 2025 6:45 pm
by hoffmanntt944
- IMG_6263.JPG (1.9 MiB) Viewed 784 times
Re: Split Torque Tube Rebuild
Posted: Thu Oct 23, 2025 6:55 pm
by hoffmanntt944