fox 5spd parts into 020 transmission

[chrissev]

Just had a thought if I ever get around to rebuilding my 020 AGS.  I once drove a 5spd fox with a 0.68 overdrive 5th and it was really nice for highway cruising.  Wondering, if I got a 5th gear out of a fox tranny, would it fit in my AGS?  Would be interesting to change fifth gear for something a bit higher.  I believe some of the old audi trannys had 0.60 fifth gears.  Would one of those fit in my AGS?

[tylernt]

Are the final drives the same? If they are different, the 0.68 5th gear will not produce the same results...

[chrissev]

Are the final drives the same? If they are different, the 0.68 5th gear will not produce the same results...

yeah they are different.  3.94 vs 3.67.  AGS has a high final drive to give the diesel more power, but it doesn't really need it.  Still the 0.68 would be better than the 0.75 that's in the transmission now.  And if I could get my hands on a 0.60 fifth and put that in I'd be cruising with the cadillacs and oldsmobiles instead of screaming along at 3000+ rpm.

[tylernt]

Gotcha. I'm not so sure the 0.60 is such a good idea... while the lower revs are tempting, your car will become gutless and you'll end up in 4th a lot, even for gentle hills.

Anyway, I'll shut up now and let somebody answer your questions.

[chrissev]

Gotcha. I'm not so sure the 0.60 is such a good idea... while the lower revs are tempting, your car will become gutless and you'll end up in 4th a lot, even for gentle hills.

Anyway, I'll shut up now and let somebody answer your questions.

this is true.  It is completely gutless below 2500rpm, turbo doesn't really start pumping till 3000rpm.  I guess I need the low rpm power of a V8 to have a gear ratio that high.  I think the fox 0.68 would work though because the foxes had the 1.8 litre 90hp gas engine in them, and after the mods I am doing on my 1.6TD I should have close to 90hp.

[banza]

Gotcha. I'm not so sure the 0.60 is such a good idea... while the lower revs are tempting, your car will become gutless and you'll end up in 4th a lot, even for gentle hills.

Anyway, I'll shut up now and let somebody answer your questions.

this is true.  It is completely gutless below 2500rpm, turbo doesn't really start pumping till 3000rpm.  I guess I need the low rpm power of a V8 to have a gear ratio that high.  I think the fox 0.68 would work though because the foxes had the 1.8 litre 90hp gas engine in them, and after the mods I am doing on my 1.6TD I should have close to 90hp.

tell me something, de 0,68 gear is from watt car? i have a 1.9GTD european Golf3, i have 120 hp, on the motor, but im working hard to have 140 hp, but my gear box becomes too short.

that "fox" gearbox is a 020 gearbox? can you give me de 5th gear part number?


ps- sorry my inglish

[ODwyerPW]

Over at the other VW Diesel site they are putting gear sets in 02A and 02J transmissions.  They are using the .717, .681 and the .658.

the .681 they are sourcing from a Transporter 02A transmission (it has a really high FD).  I don't know where the .658 is coming from (it needs mods to fit).

Regardless, I know these don't fit in the 020, I've asked and told no.

With 020 you have some really strange options if you are willing to go for the 4speed.  You can get the 4speed used in the Dodge Omni that will have a 3.42 FD (they used shorter gears) and then put in a really tall 4th gear....the .71 if you like.  That would be pretty tall.  You'd have to stay in 3rd for quite a bit, but if you were strickly a highway cruiser..well that would be good.

There was also a  3.29 that was supposedly available in some 4S five speeds someone mentioned (I can't find the source now), but I haven't been able to find a thing anywhere about it.  Seems like Urban Legend.  

If you could get this mythical 3.29 FD equipped 4S and you find this .681 gear from the Fox works...well that would be pretty cool.  It would have no passing power, but the fuel economy on highway driving would be amazing.

There's also some neat stuff from a 1984 Audi 4000 that someone shared on the forums:
.684=013 311 159 B from 2M tranny
.641=093 311 159 C from 3Z tranny
.60=013 311 159 C from 2M/3M tranny
.537=093 311 159 A from QF tranny
No verification if these gear sets will work in the 020, 02A, 02J or 02M transmissions.

Regardless, a readily available 3.67 FD 5speed and a .71 5th should yield nice fuel economy.