924Board.org

[Joes924Racer]

Question am I correct that pilot bearings are different sizes from a early NA non-turbo and a early turbo, with the turbo being a bigger unit
as the splined input shaft from the torque is bigger.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

[ic932]

Correct sir...the 931 has a simple traditional style bearing, pressed into the flywheel (IIRC..not the crank ala 944...although the bearing is identical) I PRESUME the inner bearing diameter would be larger on the 25mm shaft compared with the 20mm? Either way, you need the 931 specific spigot (pilot) bearing. I've rea about the funky 924 bearing but not witnessed it ...thank the lord.
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BANNED

[fiat22turbo]

Yes, that would be they have different part numbers and different listed, when you look them up.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[Rasta Monsta]

Look whaa?
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Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[ic932]

[Joes924Racer]

Will a na bearing fit into the 931 crank along with na
sachs clutch/flywheel.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

[ic932]

[ideola]

Cranks are identical so yes you could probably figure out a way to rig up the NA clutch assembly & bell housing. Obviously, the flywheel would need to be marked for the Turbo timing marks, and you'll be more susceptible to clutch slippage, but I can't think of anything at the moment that would prevent bolting on the NA clutch arrangement to a turbo motor.
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erstwhile owner of just about every 924 variant ever made

[fiat22turbo]

[ic932]

[ideola]

Unless you're trying to do what Joe's trying to do, which is to put a 931 lump in an NA body. It's not the path I would take, but it can be done, and to avoid having to drop the rear suspension to change out the torque tube, it might be a viable alternative to consider...especially bearing in mind that those honker torsion carrier bolts often fuse to the aluminum sleeves making it virtually impossible to get the rear carrier out (which is required if you want to change the torque tube).
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erstwhile owner of just about every 924 variant ever made

[Joes924Racer]

Not yet. I know I should make and eat the 2 pieces of toast 4 egg
omelet with 2 kinds of cheese,onions peppers & garlic, though not yet.

Its a new clutch so by the time the 931 lump is dialed in with
the intercooler! It will be time to swap outthe torque tube and rear
carrier. Something like that.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

[ideola]

[ic932]

[ideola]

[ignore]ic932[/ignore]
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erstwhile owner of just about every 924 variant ever made