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Gberg888
07-26-2012, 07:56 AM
Hello everyone,

Quick question.

I was doing some searching and found that a 2004 3.0 6spd would be a plug and play tranny swap for us b5 1.8t guys. (2000 1.8t 5spd currently)

Is this true?

If not, what else will I need?

Brens
07-26-2012, 08:11 AM
highly doubt it. I've heard of the 2.7T O1E mating to a 4.2T RS6 engine but only after a custom machined bracket. Not plug and play, plus ECU programming hasnt been perfected, YET

Greedo
07-26-2012, 08:12 AM
I'm not entirely certain on this stuff, but I don't think it would be plug and play. You should need the rear diff from the 6 speed since the gearing is different. Not sure about the axles, you may need to change those as well.

Gberg888
07-26-2012, 08:25 AM
Rear diff and axles shouldnt be an issue. Im more concerned with which 6spd transmission is the easiest to swap over... If i do not have to build my own bracket/motor mount that would be awesome!

PS just to clarify, is that all 4 axles or just the rear ones?

Can someone enlighten me on the issues regarding the tuning for said ecu issues i would encounter?

M-Hood
07-26-2012, 09:17 AM
Rear diff and axles shouldnt be an issue. Im more concerned with which 6spd transmission is the easiest to swap over... If i do not have to build my own bracket/motor mount that would be awesome!

PS just to clarify, is that all 4 axles or just the rear ones?

Can someone enlighten me on the issues regarding the tuning for said ecu issues i would encounter?


The easiest will be a 01E which is what the B6 3.0 and B5 S4 2.7t come with. Putting in a B6 3.0 6 speed isn't going to be any different then if you were to go with a B5 S4 2.7t 6 speed.

Only thing that is "bolt up" is the 01E to your 1.8t, after that you will need parts. You will need a custom bracket because the B5 A4 1.8t subframe uses a special transmission bracket that no other Audi uses. Only way around not having to make a customer bracket would be to swap to a 2.8 or 2.7t B5 sub frame.

Your stock axles will not work since they use a different flange at the transmission. You will need to either change the flanges on the transmission or swap your axles/uprights to a set from the B5 S4. If you swap out the whole rear diff housing then you will need to put in B5 S4 rear axles. You will also need a B5 S4 shifter, shifter box and all of the linkage.

I wouldn't pay attention to Brens, seems he doesn't even know what he is talking about. The engine ECU has nothing to do with the transmission and the manual transmission doesn't even need any ECU control, that would be the TIP transmission which you don't even have. There are plenty of B5 A4 1.8t owners running a 01E transmission, so there are plenty of threads and DIY posts about doing a 01E swap into a B5 A4 1.8t.

1NaudiA4
07-26-2012, 09:48 AM
If you swap out the whole rear diff housing then you will need to put in B5 S4 rear axles. You will also need a B5 S4 shifter, shifter box and all of the linkage.



You can swap over the flanges from the 5 speed diff to the 6 speed diff and keep your stock axles. At least that is what I did.

Gberg888
07-26-2012, 11:09 AM
Awesome guys. Thanks for the info M-Hood.

As far as the flanges, what is needed for that?

B6 3.0 Trannys seem a lot cheaper and I guess i can find a 2.8 parts car for the subframe or build the bracket.

Anyone have information on what is need to build the bracket? Strength required and whatnot?

walky_talky20
07-26-2012, 12:24 PM
It might be a little cheaper if you stay away from "S4" parts.

The *only* B5 subframe that won't work is the 1.8T 5-speed, which is probably the one you have, lol. All others will work (1.8T Tiptronic, 2.8 5MT, 2.8 Triptronic, 2.7T 6MT, 2.7T Tiptronic). The best choice would be any A4 Tiptronic subframe, because they are everywhere, and you don't have to buy "S4" parts.

For the rear diff, it needs to be the 4.11:1 ratio. The *only* rear diff that won't work is the A4 5MT (which is probably the one you have, lol again). The best choice would be an A4 Tiptronic rear diff, because they are everywhere, and you don't have to change your axles/flanges...and you don't have buy "S4" parts.

Gberg888
07-26-2012, 01:25 PM
So a Tip A4 thats totaled plus a O1E is all i need basically... haha

walky_talky20
07-26-2012, 02:31 PM
Plus a 6 speed shifter box/linkage and a B5 S4 driveshaft (no 'non-S4' way out of that one).

M-Hood
07-26-2012, 02:41 PM
So a Tip A4 thats totaled plus a O1E is all i need basically... haha

It is a long list of stuff you need which adds up really quick, which is why most people end up spending about $2500+ to do a 01E swap.

034Motorsport
07-27-2012, 09:43 AM
From my build thread;


6 Speed Swap Parts:
- V6, S4, or Automatic subframe
- 01E transmission from a B5 S4
- 01E bellhousing spacer (DON'T FORGET)
- 01E shifter linkage, stabilizer bar, and crossorod (there is an early/late version)
- 01E clutch and flywheel and pressure plate
- 01E throwout bearing release arm
- 01E transmission mount brackets (bracket from tranny mounts to tranny housing)
- 01E shifter box and shifter (you can use 5 speed, but you'll have to push down to get into 6th)
- 01E driveshaft heatshield
- B5 S4 rear diff from 6 speed
- B5 S4 driveshaft from 6 speed
- B5 S4 front axles from 6 speed
- B5 S4 or B5 A4 V6 uprights (to fit the S4 axles)


The bellhousing spacer is dependent on what clutch/flywheel, but the 1.8T generally doesn't use it. The rear diff flanges can be swapped and A4 axles maintained. Front, cannot.

You'll also need the V6 or S4 uprights to fit the large CV joint.

The swap is a real PITA

http://fototime.com/%7B1FA4B235-942D-4173-A5EA-8858C3E4F210%7D/origpict/IMG_2269.JPG

gt30r18t
07-27-2012, 12:21 PM
I have successfully completed this swap. The easiest way to do it is:
B5 S4 subframe
B5 S4 control arms and uprights
B5 S4 prop shaft
B5 S4 from front axles
B5 S4 shift assembly
B5 S4 rear differential