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ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Oh, yeah, didn't connect the dots on the TDI swap.

At 200 BHP, you will be JUST FINE with either of the stock 931 gearboxes. The thing you will want to be aware of is that the G31 does not have bell housings at either end, and the torque tube is shorter. The Audi unit has a relatively standard bellhousing up front, in that the bolt pattern apparently matches several audi lumps, from what little I've read in the hybrid/swap forums. Obviously, the driveshaft up front will be in the same position regardless of which tube you use, but the question will be how to interface the TDI engine to the torque tube. Will the bell housing be beneficial or not? Can't help you with that one, but I can take measurements if you'd like, as I have one spare of each on the bench.
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erstwhile owner of just about every 924 variant ever made

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Don't know what Rasta wants for his, but they routinely sell for $800-$2000 depending on condition, mileage, and history. Quite a spread.
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erstwhile owner of just about every 924 variant ever made

newman931 · Joined: 25 Oct 2009 Posts: 30 Location: Tennessee, USA

ha
to be quite honest, the way the 1.9 TDI gets up and moves a jetta at 90HP - (a car almost 1000lbs heavier than mine) - i am thinking i'd be quite pleased somewhere between 150 and 175HP. ya know...
it will be ALOT quicker than it was.!

v8carreragts · Joined: 05 Sep 2003 Posts: 665 Location: Tucson, AZ

The 016 should handle the torque without any problem. The problem with pushing the rear pinion bearing through the casting is from high torque drag race starts. There is a fix for this if you are interested. It's fairly easy to do.

These transaxles are used in GT40 kit cars and although they aren't the strongest, they handle quite a bit. They also hold up to V8 conversions as well. The 951 and 944 S/S2 are the strongest (unless you can find one from a 951S) They have third gear splinded to the pinion shaft where all other 016's are heated and pressed on.

newman931 · Joined: 25 Oct 2009 Posts: 30 Location: Tennessee, USA

hey cool!
v8carreragts - your the guy ideola was referring to.

do you have any idea what the deal is with the gear ratios on the turbo diesels being higher and how to set up a complimentary set up????

yeah, after reading about the GT40 kit trannys i figured i'd be alight in the torque category.

and yes! i will be very interested in the high torque fix.
thanks!

Rocco R16V · Joined: 03 May 2009 Posts: 497 Location: PNW

Rocco R16V · Joined: 03 May 2009 Posts: 497 Location: PNW

about the bellhousing, look what this guy did.
http://www.hybrid9s.com/showthread.php?t=48
take a fwd trans bellhousing grind off what you dont need and make an adapter that bolts to the bellhousing and is welded to the torquetube, use the clutch, starter, ect from VW.

HTH
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"Government exists to protect us from each other. Where government has gone beyond its limits is in deciding to protect us from ourselves. "
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newman931 · Joined: 25 Oct 2009 Posts: 30 Location: Tennessee, USA

ROCCO!
yes!
exactly!

v8carreragts · Joined: 05 Sep 2003 Posts: 665 Location: Tucson, AZ

newman931 · Joined: 25 Oct 2009 Posts: 30 Location: Tennessee, USA

so how can one change the ring and pinion ratio to 4.556?
is that just transplanting the ring and pinion from the diesel?
if so, do you got one of those tutorials around?

sorry if that's a stupid question.

love the tutorial on the strengthening plate!
thanks.

v8carreragts · Joined: 05 Sep 2003 Posts: 665 Location: Tucson, AZ

You would just change the ring and pinion to the 4.556 set. This isn't easy as you need to disassemble the transaxle and set up the new gear set. The 016 isn't an easy one to do. The procedure is in the factory manual.