924Board.org

[canyonblaster]

Without spending a fortune?

Years ago I was able to do the opposite with my 1984 Rabbit GTI (it came stock with 5th gear too low, and a shop was able to easily access the cog and replace it with a higher ratio gear that I bought from a VW tuner - it was like 2 shop hours...).

I know it is a long shot but the 931 5th gear is just way too high. It would be so nice to get it a little lower.

Anyone?
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PCA Licensed Club Racer & Driving Instructor Current P cars: 1981 931
Past P cars, 1985 944, 1987 951, 1990 911 C4, 2002 Boxster S, 2005 996 GT3, 2013 911 C2S
Daily Driver P cars: 2008 Cayenne GTS, 2013 Cayenne GTS

[Cedric]

Isnt the euro spec lower? Suits the car well i think. Its not that easily removed though, but not rocket science, there are good guides around..
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1980 924 Turbo
www.instagram.com/garagecedric/

[fiat22turbo]

It's essentially an Audi box and the Lamborghini/GT-40 and 944 V8 guys have a few tricks for that box. Do a little research on Google on that box and you might find some options. It isn't as easy as the Bunny's 020 since the box has to come out and get cracked open, might as well budget for a bearing and synchro refresh while you're in there.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[Rasta Monsta]

The gearbox that shipped in the car has the lowest 5th in any 924/44/68 Audi trans. This makes me think you may not have the original unit.

Check the stampings on the box (passenger side, top of bellhousing). . .if original, you will find the letters "MB" followed by 5 numbers.
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Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[canyonblaster]

Thanks guys.
Rasta, i owned a 944 and a 951, i dont recall the shift to 5 being such a leap as it is in this 931. i will look for markings you mention It may be that the 1-4 are just all really low and 5 is just a big leap. The power drops way off and it is just a buzz kill. In 4 on the open road it feels like it wants an up shift at approx 60-65 mph (not redline but approx 4k revs), but it falls way off the power. Once up at 75-85+, the gear does feel about right. What the box probably really needs is a complete remix of all 5, or at less 2-5, but i am already burried in this car $!!
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PCA Licensed Club Racer & Driving Instructor Current P cars: 1981 931
Past P cars, 1985 944, 1987 951, 1990 911 C4, 2002 Boxster S, 2005 996 GT3, 2013 911 C2S
Daily Driver P cars: 2008 Cayenne GTS, 2013 Cayenne GTS

[Grenadiers]

Here's some info from 944Spec.org on guys looking for the turbo gears for their n/a boxes. That's if these are any 'shorter' than the 931 gearset of course.

'You can order the two gears you need from these guys cogscogs.com. Here are the part numbers and the price I paid.'

016311159C Gear Wheel 5Th Speed Circlip G >> Qk 28 08 6 G >> ...{31}
Condition: Used
$41.30 x 1
$41.30
016311353B *1 Shifting Gear 5Th Speed 5Y 5Z{37}
Condition: Used
$95.15 x 1
$95.15
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

[canyonblaster]

Dave, what two gears are you thinking would be the ones to swap? Not sure I follow?

After driving the car a bit on Sunday, I am sure that this is a stock box. Luckily, it is one of the better aspects of the car as purchased....it shifts smoothly and feels like it should (I have had to spend $$$ on alot of other aspects of the car). The big gap from 4th to 5th is well documented in all the articles from back in the day. I also recall that my 951 was doing 120+ in 5th at same revs so I'm certain Rasta is accurate.

I just worked her a little harder in 4th and saved that upshift to 5th until she really needed it. The old school 2.0 revs like a lawn mower, but the car still has its charms, and the primary reason I wanted one was to stay out of court. The car is fun at reasonable pace. If I want to own the road I can jump in the GT3
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PCA Licensed Club Racer & Driving Instructor Current P cars: 1981 931
Past P cars, 1985 944, 1987 951, 1990 911 C4, 2002 Boxster S, 2005 996 GT3, 2013 911 C2S
Daily Driver P cars: 2008 Cayenne GTS, 2013 Cayenne GTS

[Grenadiers]

Well, that's true, the 5th takes a bit of rpm for effect. At the track, though, I think the 5th is a bit too short for the 2.0L . When at Road America, with its long straights, I felt I ran out of gears in relation to speed and rpms. The Porsche 2.5L motor takes long revs in it's powerband each gear, and a short 5th is better. Watch 944spec videos on youtube for examples.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

[ideola]

[canyonblaster]

Had to repost on this initial thread.

After getting my car near perfect, and pulling strong with the added boost, I find the trans ratios to be pretty good. I posted this too early and didn't really have the car running right when I did! There is zero reason I would want a lower 5th!

Curious though, has anyone ever dropped a 968 trans, or in other words, a six speed into a 931?
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PCA Licensed Club Racer & Driving Instructor Current P cars: 1981 931
Past P cars, 1985 944, 1987 951, 1990 911 C4, 2002 Boxster S, 2005 996 GT3, 2013 911 C2S
Daily Driver P cars: 2008 Cayenne GTS, 2013 Cayenne GTS

[Mike9311]