924Board.org

[Qky]

Hi everyone,

Few words of intro:
After some time, I decided to start a new project (924 v8 ).
I'm fitting Audi's 3.7l V8 engine in my 924.

I stuck with the central tube.
924 Shaft (in my opinion) is too thin to convey so much torque, so I got a 944 central tube from a friend.

However, when I spin the shaft by hand, the bearings are making noise of crumbling.

Has anyone changed the bearings on the central tube (shaft) or by chance know bearing dimensions and how it should be done.

[morghen]

very nice idea...i was wondering how an Audi V8 would fit in the 924

the bearings are standard units..you can buy them very cheap at any bearing store.
for changing them i think you need a big pipe(like water drain but thicker)

but be very careful to how much the shaft comes out of the tube..so you put it back just the way it was.
_________________
Supercharger and EFI kits
https://www.the924.com

[Qky]

Thanks for your prompt replay.

[Harm]

I'm not familiar with the 944 Transaxle.
Will be looking into replacing my bearings (N/A) this winter, so I'm curious.
Too give you an idea, here's a pic of a 1980 drive train and 016/9 gearbox.
232 KB
LARGE > http://img844.imageshack.us/img844/341/92480drivetrain1009.jpg <

HTH and good luck on your project.
Regards, Harm.

Edit01:
Turbo hints deleted. Thanks mon.
Funny thing though:

[Rasta Monsta]

There's a very thorough write-up on this over at Clark's Garage.

Harm, that pic shows an Audi transaxle. . .so it is not an 80 Turbo.
_________________
Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[morghen]

looks very nice !
maybe we can meet when you finish it so i can hear it live
_________________
Supercharger and EFI kits
https://www.the924.com

[Joes924Racer]

I would like to get familiar with more from clarks garage.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

[lo41 black 924]

how much heavier is that audi v8 compared to the stock engine? is it going to throw the handerling chracteristics?

Its a neat fit thougth sure looks comfortable in there. admire you for your challenging engineering, amazing what a man can do when his wife leaves him.

[morghen]

if the engine is heavier than the stock unit the understeer/oversteer characteristics could be a bit accentuated...but if anything...it will be more tail-happy IMO.
_________________
Supercharger and EFI kits
https://www.the924.com

[Qky]

Guys, thanks for the data.
You were more than helpful.

I can not find data on how the V8 engine weight (and don't have how to measure it), but I think that is lighter than the old one.
Stock engine block is made of cast iron while the V8 engine was completely aluminum.

[Andrew NZ]

I've just removed my driveshaft to rebuild the torque tube. I bought a 2 meter length of pipe that was slightly smaller OD than the driveshaft (under 25mm) and then spun a brass boss up that fitted snugly over the clutch end of the drive shaft (putting most of the load on the tapered edge), and tightly into the end of the pipe.

Make sure you hold it central as you hammer the shaft out and it should come straight out without moving or damaging the bearings. My bearings are fine, but I'm considering knocking them out with a large OD pipe and replacing with Ceramic, or the expensive "super bearings" mentioned on this site somewhere.
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Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz

[fiat22turbo]

Make sure to measure the location of the front and rear bearing carriers and the length of the shaft at either end before you start moving things around.

I used a large bearing puller attached to the TT carrier, then threaded in a piece of 3/4" all-thread (which threaded into the front of the puller) with double nuts on the threaded rod to gently push the shaft out.

Used a ball hone to gently clean up the inside of the carrier tube.

I used a set of huge washers (the OD of the washer closely matched the ID of the carrier) with a pair of double nuts on the end to push the bearings back in place.

Here's some pictures:

http://s148.photobucket.com/albums/s10/fiat22turbo/Porsche924/TorqueTube/








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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[Joes924Racer]

Great input with the pictures adds a nice touch.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

[v8carreragts]

[fiat22turbo]

So moving the battery to the back can help restore the balance a bit. Good information to know

Qky, let us know how your project gets on, I for one am really interested in it.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)