mike.gamble

Sorry to hijack the thread a little but, as I'm new to 944's, I'm assuming that after reading this thread, if the transmission will fit in, the engine will as well?

FrenchToast

The 930 never came with a six speed. (With the exception of at least one special ordered that way).

They all had a 4-speed, gearing changed in 1977, until 1989 when they had a G50 5-speed.

The 968 6-speed is directly from the Audi parts shelf. All 944-968 transmissions descended from an Audi Quattro unit. The 924 (non-turbo) units descended from non-Quattro Audi/VW cars I believe. (Thanks J1NX3D!)

Audi used the same box as in the 968 up until at least MY 2005, maybe later. I would imagine a similar situation with the 5-speed.

That's why there are unused mounting holes and a block off plate at the back (used for the rear wheels on a Quattro).

The 968 box is by far the easiest fitting 6-speed in a 944. Any 911 gearbox you would need to mount upside down, at which point you run into cooling and oiling issues. And linkage issues! Or you'd change the R&P and mount right-side up.

The 930 4-speed is known to be the strongest transmission Porsche has ever built, including anything they've built since. There's a good chance it is the strongest production manual transmission out of any manufacturer.

IMHO there really is no reason to switch to the 968 box unless you have enough power to blow up a 951S box on a regular basis.

And yes, the 968 engine fits in a 944. 968 uses the same shell more or less as the 944.

Take care!

odurandina

i gave a wink and held my tongue when this nice gentleman made this post.

J1NX3D

barring the getrag 924 turbo series dog leg box (snailshell) which is more akin to the 915 type g/b. search ideola + snailshell here for more info.

odurandina

why ?

below, i've quoted the numbers running a 25.6" Dunlop tire. but, you can just go down to a 25" tire, and you'll get closer to drag limited maximum possible speed for a 944. six speeds allows you to stay close to the engine's peak power all the way up... don't see why this wouldn't make the car more fun to drive.




968 ratios;

1st; 3.182 :1
2nd; 2.000 :1
3rd; 1.435 :1
4th; 1.111 :1
5th; 0.912 :1
6th. 0.778 :1
final ratio 3.778 w/ open diff.



oem transmission w/ very short gear shift points;

numbers; flat out, spirited and economy driving running the 25.6" tire.



ratio ........ speed @ 6000 rpm ........ speed @ 4500 rpm ........ speed @ 3000 rpm ........ increase (mph) from previous gear @ 3000 rpm

0.778 .................. 149.9 ........................... 112.4 ........................... 74.9 ............................ 11.0

0.912 .................. 127.9 ............................ 95.9 ............................ 63.9 ............................ 7.8

1.111 .................. 112.2 ............................ 84.1 ............................ 56.1 ............................ 15.5

1.435 ................... 81.3 ............................. 61.0 ............................ 40.6 ............................ 14.0

2.000 ................... 58.3 ............................. 43.7 ............................ 29.1 ............................ 10.8

3.182 ................... 36.7 ............................. 27.5 ............................ 18.3 .....................................................

Jfrahm

--edit-- I get it, you move the ring to the opposite side of the trans, leaving the pinion in place.

MAGK944

I find both the na & turbo boxes well suited to their engines, never felt they were inadequately geared and I would not like an extra gear in there or see any advantage. If anything I would put the turbo 5th in the na and the na fifth in the turbo, just because I prefer not to change down to overtake in the na and would like better cruising mileage in the turbo.

What would be useful especially for racing is a sequential box Our trans is based on the Quattro, which had sequential gears in the rally version. So somewhere in the Audi parts bin are sequential gear part numbers that would fit our trans, ummm.

FrenchToast

Thanks for the correction! I'll correct my post. I remember thinking that the 931 box is different in some way but then forgot about it.

Interesting its similar to the 915. Is it derived from it?

Now THAT would be COOL! Isn't the 'sequential' part just all in the shift lever though?

Take care!

333pg333

If you can find an affordable sequential which can fit a 944 chassis that also holds over 500ft/lb let us know. I was looking at the new transaxle setup for the Aussie V8's but that will not be cheap.

In all reality, there is no need to change from the 944 box but merely modify a part or two depending on the intended use. The S2 (or 951 w/ S2 r&p) gearing is generally very usable for all but a very few n/a's or turbos.

Fara

Well it's fair enough that you don't really want the Albins 6 soeed sequential (the transaxle the new Aus. V8's will be based off) - http://www.albinsgear.com.au/productcatalogue.pdf

Good news, it's only $20K!

333pg333

Yes saw that. Thought it was a bit more than $20k though. Just such an advantage on the track. 2-3 seconds at Eastern Creek (err Sydney Motorsport Park), maybe more with the Air changer like Nemo!!

bad_monkey

If you want to go sequential with these cars, it would be possible. Use a straight-cut gear set, and an electrically operated sequential shifter mounted at the transaxle.

http://www.geartronics.co.uk/paddleshift.htm

Flat shifting all day long, and a lot less than $20k.

Surely someone as handy as yourself could make that one go Patrick?

strotter13

Hey guys,
I am going to rejack this thread, I apologize. I just bought a 1987 Porsche 944 S. It has unknown miles, but runs good. The exhaust looks good (no purple smoke, etc.) the engine sounds good, and the computer system is functioning correctly (no check engine/ ! light coming on). I bought this car to be a little commuter car, back and forth to work each day. I only paid 500 bucks for it, and then put another 500 into an alignment and tires for it. Anyhow, my questions is this.....
The car has 6 gears??????
And on top of that, they are very low gears (by low I mean the car tops out at like 90mpg)

I was in what I think was sixth gear and I was going 60mph at 4000 RPMS.

Here is my questions, how is this possible, is there any tranny that would be geared so low and bolt up to this engine (2.5L)

I haven't gotten under the car to check it out, but it is also a possibility that I am not shifting correctly, but don't get me wrong here, I am not ignorant about cars, I just have never worked on a porsche before, usually corvettes and camaros.

So any suggestions on whats going on here??

strotter13

Oh yeah the other wierd thing, first gear goes to about 35 or 40 and second gear goes to about 55, but the rest of the gears are tiny

V2Rocket

crawl under the car and take a picture of the trans.

whatre the odds someone put an audi diesel transmission in there...