audi auto trans that works in vanagons ?

devesvws

i thought this was coverd not long ago but i could not find the post Confused

i have a 1990 audi 100, will the auto trans work in my 91 carat auto? if so what needs to be done to the trans to work and is it a easy swap. i need this info asap i need to take what i need and junk the rest. and make room for my forth vanagon Laughing

danfromsyr · Posted: Thu Apr 17, 2008 11:07 am Post subject:

the Transmission section from the Audi will mate to the Differential section of the vanagon automatic trans assembly.

a few things to note.
there is a 'seal' 'spacer' 'thrustwasher' or some such right a the seal between the 2 halves that is vanagon or Audi specific.. you will need to change that from your vanagon trans.
double check to make sure the axle flanges are the same CV diam. I know my quattro (yes it's not a auto, but it raises a question) has larger diam CVs
trans mount holes may not be tapped.
you will of course have to use the vanagon automatic linkages.
I believe the oilpans may be differant.. unsure if this is an issue.
but the short answer is YES, the trans section would be god spare if it's known good.. you would only need to save the trans half, not the cast iron differential half.

hope that helped.

Dan
*with far too many VWs & Audis to shake a stick at. trust me she's tried..
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MarkWard · Posted: Thu Apr 17, 2008 12:34 pm Post subject:

The CV's are in in the diff section so they'd remain. You may need to swap the accel cable relay lever and the dipstick/fill tube. Not sure though.

winkshog · Posted: Thu Apr 17, 2008 1:32 pm Post subject:

I remember reading a post where it was just the guts of the trans that you swap. He did it on a pick nick table in a state park in Cal. I think it was 5000. Now where did I save that link.

someone more in the know help out.

sean
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[email protected] · Posted: Thu Apr 17, 2008 1:43 pm Post subject:

here's a good question. Do any of the Audi transmissions that are Vanagon compatible have lockup converters that could also be swapped?

John
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danno · Posted: Thu Apr 17, 2008 3:25 pm Post subject:

Try this.
http://www.thesamba.com/vw/forum/viewtopic.php?t=2...nd+rebuild
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devesvws · Posted: Thu Apr 17, 2008 5:17 pm Post subject:

Well here is the scoop on the trans. Its a #REH 3spd trans with 122k, the trans fluid is a little dark and has no burned smell to it. Though I've never driven it, I did move it around the yard and have no reason to believe the trans might not be a good one. Does anybody know of someone in VA that might have experience in this swap out? should i keep the #NF motor for a future audi 5 cyl swap ? Confused

what should i keep that might fit the vanagon.

Captain Pike · Posted: Thu Apr 17, 2008 5:28 pm Post subject:

D Clymer · Posted: Thu Apr 17, 2008 9:04 pm Post subject:

We should probably add this thread to the sticky section since it has been addressed before and comes up from time to time.

The automatic transmission from an Audi 5000/100 will work in a Vanagon. However, it is only the automatic section - not the final drive housing and bellhousing that can be used. For that matter, the automatic section from a transverse Golf/Jetta transaxle will also work, but the Audi trans is more desirable because it has the shift points set for higher rpms and has a trans cooler that can handle the higher rpm shifts. Depending on who you believe, the Audi trans also has stronger internals. Oettinger used the automatic section from an Audi 200 turbo in their 180hp wbx6 Vanagons in the late 1980s, and they specified this section because that engine produced 226lb/ft of torque.

The bad news is that using the Audi trans section will not change the gearing at all. The 1,2, D ratios are the same between the Audi and the Vanagon. It's the final drive that makes the difference: 4.09:1 for the Vanagon and 3.25:1 for the Audi. The ring and pinion look almost identical except the pinion gear is located on the other side of the shaft for the Audi. This is how they got the two transaxles to rotate in opposite directions to allow for the 180 degree difference in their mounting orientations. So if anyone is looking to use an Audi 3 speed auto to improve the gearing of their Vanagon, it won't work. If, however, someone is looking for a replacement transmission for their Vanagon and they know of a cheap Audi 5000 with a working tranny, they are in luck. They'll end up with a sportier shifting tranny as part of the bargain.

As far as using the later 4 speed Audi transmissions with lockup torque converter goes, unfortunately neigher of these units has an automatic section that will bolt up to a Vanagon final drive housing making a retrofit pretty much out of the question. There were two of these trannys - 097 used in the 1991 Audi 100, and in the 1991-1995 Audi 90. This is a jerky and crappy tranny that you wouldn't want to use anyway. Then there is the 4 speed used in the 1992-1997 Audi 100/A6. That tranny is a ZF 4HP18 and is good, but is totally unrelated to the VW/Audi 3 speed.

David

RevKevin · Posted: Thu Apr 17, 2008 11:25 pm Post subject:

devesvws · Posted: Fri Apr 18, 2008 6:04 am Post subject:

D Clymer · Posted: Fri Apr 18, 2008 8:27 am Post subject:

devesvws · Posted: Fri Apr 18, 2008 10:23 am Post subject:

ok i must be stuck on stupid mine is a 1990. i see now you typed 1991 audi 100 and i saw the audi 90 and my eyes must have crossed. Laughing

thanks for the good news Very Happy

jeepwillies · Posted: Tue Apr 22, 2008 11:32 am Post subject:

David, I think I understand but then again I am asking this for a reason.....cause I don't! Smile

So if the final drive ratio is lower for the Audi transmission, will that lower my RPM's at highway speeds?
Basically I have an 03 TDi in my van and want to do something to lower the RPM's. (3500 RPM's at 100 Km/h) I have searched for a replacement R&P for the differential but have been repeatedly told that they are not available. So would this Audi tranny help my cause?

Cheers!
Dave

The bad news is that using the Audi trans section will not change the gearing at all. The 1,2, D ratios are the same between the Audi and the Vanagon. It's the final drive that makes the difference: 4.09:1 for the Vanagon and 3.25:1 for the Audi. The ring and pinion look almost identical except the pinion gear is located on the other side of the shaft for the Audi. This is how they got the two transaxles to rotate in opposite directions to allow for the 180 degree difference in their mounting orientations. So if anyone is looking to use an Audi 3 speed auto to improve the gearing of their Vanagon, it won't work. If, however, someone is looking for a replacement transmission for their Vanagon and they know of a cheap Audi 5000 with a working tranny, they are in luck. They'll end up with a sportier shifting tranny as part of the bargain.
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87 Automatic Westy TDI'd

danfromsyr · Posted: Tue Apr 22, 2008 12:04 pm Post subject:

The Audi 5000 & 200 TURBO Automatics (only FWD, not Quattro) had one more clutch disc over the regular Automatic (& Vanagon auto) for the increase in HP.

and if you always wanted to know what the Audi Turbo Automatic trans could handle.. many use them with LT1 engines in Lambo kit cars.

I'll add this link & info for future searches.

http://www.lambolounge.com/Chassis/Transmission/5000/5000.asp
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jeepwillies · Posted: Thu Apr 24, 2008 10:14 am Post subject:

Still trying to figure this one out??

Quote from D Clymer

"The bad news is that using the Audi trans section will not change the gearing at all. The 1,2, D ratios are the same between the Audi and the Vanagon. It's the final drive that makes the difference: 4.09:1 for the Vanagon and 3.25:1 for the Audi."

So if the final drive ratio is lower for the Audi transmission, will that lower my RPM's at highway speeds?
Basically I have an 03 TDi in my van and want to do something to lower the RPM's. (3500 RPM's at 100 Km/h) I have searched for a replacement R&P for the differential but have been repeatedly told that they are not available. So would this Audi tranny help my cause?

Cheers!
Dave
_________________
87 Automatic Westy TDI'd

allsierra123 · Posted: Thu Apr 24, 2008 10:24 am Post subject:

yes it is lower. And it would lower the rpm's a bit but that portion in not interchangeable. At least that is how im reading it.
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jeepwillies · Posted: Thu Apr 24, 2008 10:43 am Post subject:

Ohhh some how I missed the whole point here. The "final drive" as quoted is different. That's the part that is not interchangeable.

Now I get it.

So is there any way to flip the Audi final drive? Or any other final drive (differentials) that I could mate up? Maybe some hybrid thing, final drive from one car, to tranny from another and all into my Westy?

Cheers!
Dave
_________________
87 Automatic Westy TDI'd

allsierra123 · Posted: Thu Apr 24, 2008 11:11 am Post subject:

your at 3500 rpm right now?
_________________
95 GMC Yukon 6.5 TD 2 Door Tow pig/ Daily driver.
91 Vanagon GL. 1.9TD Conversion Sold
81 Vw rabbit 1.6 Diesel. Sold

jeepwillies · Posted: Thu Apr 24, 2008 11:17 am Post subject:

Well right now I am not, but that's because my Westy does not fit in my home office! hahahaha - sorry it's been a long week. Very Happy

Yep when I am cruising at 100 km/h my tach is saying about 3500 RPM's.
I would definitely like to find a solution to lower that.
I am just searching out some 16" wheels and taller tires to help, but I think ultimately I will need to do something with the tranny.

Any suggestions anyone??

Dave
_________________
87 Automatic Westy TDI'd


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