924Board.org

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

Does any one know if the ring and pinion from the Audi 100 diesel 016 transaxle will fit in a 924S transaxle?
I presume it will as from what I can gather all audi/924/944 are the same apart from the input shaft size.

This would solve my gearing problems with the rotary, as they have a 4.78 ratio in some diesel models.
_________________
Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

Anyone?
_________________
Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz

alexvex · Posted: Wed Oct 21, 2009 8:58 am Post subject:

Not sure if it would work. There has been a discussion of different R&P's over on Rennlist and the Audi 01E stuff might work..not sure about 016 stuff.
_________________
--Alex--
1992 Porsche 968 (VW 2.5L I5 Turbo swap in the works)
1995 Audi 90 Quattro Sport (4.2L V8 Swap)
2010 Touareg TDI
Past Pcars: 80 931, 87 924S, 87 951

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

Thanks, I'll have a look on Rennlist.

_________________
Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

morghen · Joined: 21 Jan 2005 Posts: 8880 Location: Romania

here is some info:

http://www.924board.org/viewtopic.php?t=23820

http://www.porschehybrids.com/php/viewtopic.php?f=2&t=2660
_________________
https://www.the924.com

alexvex · Posted: Thu Oct 22, 2009 2:14 am Post subject:

Discussion about taller R&P:
http://forums.rennlist.com/rennforums/944-turbo-and-turbo-s-forum/528058-ok-either-someone-help-me-find-a-taller-r-and-p-or-i-may-just-give-up-and-part-it-out.html

Listing of different Audi 01E trans/ratios:
http://www.elektro.com/~charlie/photos/cars/01E/
(4.11 in 6spd 1.8T/TDI A4, 4.375 in the 6spd 2.4L/3.0V A4 and Allroad)

Those are discussions about the 968 6spd which is based off the audi 01E.
I've been trying to search, but have had no luck to see if the R&P's are interchangeable which would then make the R&P's of the Audi 01E's interchangeable with the 016.

As to your original question about the 016 diesel R&P, I would imagine with it being a 016 trans that it would be interchangeable. However, you might run into strength issues like with the N/A R&P. Turbo/S2/968 R&P's are much stronger than the normal N/A 944 R&P. But if you aren't having problems with the one in the 924S trans then you should be ok. I'll try and look up part numbers in PET later tonight and see if they match.
_________________
--Alex--
1992 Porsche 968 (VW 2.5L I5 Turbo swap in the works)
1995 Audi 90 Quattro Sport (4.2L V8 Swap)
2010 Touareg TDI
Past Pcars: 80 931, 87 924S, 87 951

alexvex · Posted: Thu Oct 22, 2009 2:17 am Post subject:

Just found this thread saying some people have S2 R&P's in 968 trans and sounds like a direct swap.

http://forums.rennlist.com/rennforums/944-turbo-and-turbo-s-forum/311219-5-speed-or-6-speed.html
_________________
--Alex--
1992 Porsche 968 (VW 2.5L I5 Turbo swap in the works)
1995 Audi 90 Quattro Sport (4.2L V8 Swap)
2010 Touareg TDI
Past Pcars: 80 931, 87 924S, 87 951

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

Wow! Thanks for all the help!!!

I'll have a read through them all.

_________________
Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz

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

I think there is some bad info floating around. The AUDI R & P shoud be a direct bolt in.

944 turbo, S & S2 are not. These require some case machining. The ring gear is approx. 1/4" larger in diameter. The case requires the area around the outside of the ring gear to be opened up. Also the front pinion bearing is larger requiring the bearing bore to be enlarged. The pinion is 4mm longer than the previous 016 so a case spacer and a gear spacer needs to be fabed. The 944 S, S2 and turbo gear set has teeth that are approx. 1/8" wider than the previous 016's. With this change came a different ratio for the S and S2. The earlier 016's had 3.889 and the S and S2 had 3.875.

As far as the 01E, the R & P is not interchangeable with any 016 based transaxle. The diff is a different size and the pinion shaft is much longer for starters as well and all of the bearings are different. The 016 shares the diff with the G50. (but not the G50/50 -twin turbo) The G50/50 has a ring gear that is approx 8.5" in diameter.

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

Bad news, the Audi R&P Isn't a direct swap into the 924S box, but may work in the standard 924 box.

The ring and pinion I have is a 4.78 out of a 1979 Audi deisel 5 speed. The box I wanted to install it in is a 1987 924S.

It all looked very good while the gears were still on the 924S shaft, as the length and 5th gear spline etc are identical. When we've taken the gears off though the 4th gear on the 924S pinion shaft is splined, where as the Audi is a press fit.

All is not lost yet though, as according to the picture in the Haynes manual the early 924 has a press fit 4th gear. I'm hoping that I can use the gears out of my early 924 5 speed box on the Audi shaft - it all depends on whether I can swap the input shaft gears on to the 924S shaft too, as the 3rd and 4th ratios are different.

I'll pull apart my other box this weekend and let you all know.
_________________
Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz

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

The 924S box is different is some respects. 4th is splined in the later transaxles. The pre 85.5 transaxles are like the AUDI.

The 968 ring and pinion does not interchange with any 016. The discussion on Rxxxlist is all based on heresay. I have seen the parts and there is no way you would be able to even machine the parts to work. The 968 ring gear is larger along with the bolt pattern so that alone makes it a no-go. The pinion shaft is very different as well---diameters, splines, etc.

You should be able to use the AUDI gear set if you use the 4th gear from the early 924/44 trans. It is just that the pressed gear is one of the weak parts of the early transaxle.

The 944S, S2 and turbo ring and pinions are interchangeable with each other but not easily with the early trans. The pinion shaft is slightly longer along with the shift shafts.

There is a guy on the GT40 forum that has swapped the ring and pinion from a 944 turbo into his AUDI 016 but it is very difficult and requires lots of machining and a few custom made parts. Here is the thread. (I,m petet)

http://www.gt40s.com/forum/gt40-tech-powertrain-transaxles/31010-audi-016-porsche-944-re-spline-016-a.html

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

Andrew NZ · Joined: 22 Jun 2004 Posts: 744 Location: New Zealand

I got the two shafts back from the gearbox place today!

I had to use the 3rd and 4th gear from the earlier trans, but it works.

Therefore the early Audi ring and pinions DO fit in the Porsche 924 Audi boxs, but not the 924S due to the splined 4th gear.
_________________
Andrew
1977 RX924 race car
12a bridgeport supercharged
www.race4-dcup.co.nz