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Fifty50Plus · Posted: Mon Apr 29, 2024 7:14 am Post subject: 924 Torque Tube Refresh

Guys, I went to the Carlisle PA Porsche swap and sell yesterday to show some of my 356 and 912 engines. There was a fellow across the aisle from me who was advertising 944 torque tube refurbishment. I went over and talked to him about 924 NA torque tube repair and he said he could do them by machining a smaller bushing that the 25mm one he has inside all four of the large bearings in the tube. He had several 944 tubes there and they looked fantastic.
I told him about folks on this board who have attempted or succeeded in replacing the TT bearings but nothing sounded repeatable or easy. He said he'd be happy to do a professional job and suggested that multiple NA T Tubes might be the best way to go. His brochure lists a complete refurbished 944 Torque Tube for $700 but he said shipping to and from his place is the biggest issue. His name is Bud Hoffmann (440-279-7383) (telebud@roadrunner.com) or (hoffmanntt944@gmail.com) and is located in Chardon, Ohio. He said he could do either the Audi version or the snailshell version of the TT. I'm thinking of seeing if several folks in my area would be interested in joining together and delivering and picking up several tubes as a batch.
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

924RACR · Posted: Mon Apr 29, 2024 9:38 pm Post subject:

Ah, just east of Cleveland... "Hello, Cleveland!!!"

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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

chuck21401 · Joined: 20 Feb 2005 Posts: 606 Location: Annapolis, MD

Interesting. I've seen posts from Bud Hoffman on the 944Fest board on Facebook. The pics look great.

How do you know if your torque tube needs to be refreshed? Is the 80 931 torque tube a different animal?

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1981 Porsche 931 w/S1 engine & euro g31 transaxle. Water-cooled intercooler

Fifty50Plus · Posted: Wed May 01, 2024 2:58 am Post subject:

Apparently they start making a noise and vibrating. If the car is intact, it's a pain to remove and re-install. In your case, you are closer than I am to doing all that work (pulling and replacing the tranny). I'm thinking of having a snailshell version done so that I have a good spare for my race car. Matti (my friend) probably needs one for his new 924 racecar also. If we can find a couple more in our area it might be worth a trip to Ohio.
_________________
1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

Karlio · Joined: 17 Nov 2019 Posts: 119 Location: UK

Yep noise and vibration when the bearings go. On an n/a audi box it is gearbox out, rear beam out then the torque tube out. Spin it by hand and it wont feel smooth and grumble if the bearings are gone.

I posted a couple of weeks ago a very good YouTube video on how to remove and replace the tt bearings. Bearings are available in both 20mm and 25mm shaft sizes.

Fifty50Plus · Posted: Wed May 01, 2024 9:42 am Post subject:

I wonder what shipping is both ways across the Atlantic

I talked to Matti here on the east coast and he said he could drop some off on his way to Wisconsin. I'm in for one, Matti is in for one and maybe Chuck in Annapolis (who is having Idola's gearbox rebuilt) might be in. I'll PM him and see if he's interested.
_________________
1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

telebud924/944 · Joined: 05 Nov 2024 Posts: 1 Location: Ohio

Here are some pics of a recent rebuild.[/img]