Recognise this axle?

[rcx026]

Does anyone recognise this rear axle? It's apparently from an Audi 100 Avant or an Audi 100 "All Road". They have lockers in them and ratio is 1:4.2 I think. That's all I was told when I got them in a job lot. I don't know what years and any other models that it's fitted to.

Does anyone have more information on these axles? I plan to use them in a 4x4 buggy with independent suspension. I've got two, but only one shown.



http://s5.postimage.org/6csuamx37/2016_03_03_19_14_02.jpg (http://postimage.org/image/6csuamx37/)


http://s5.postimage.org/98aiv8qgz/2016_03_03_19_14_09.jpg (http://postimage.org/image/98aiv8qgz/)


http://s5.postimage.org/xq2mj4t1f/2016_03_03_19_14_05.jpg (http://postimage.org/image/xq2mj4t1f/)

[owas]

Write all numbers and letters from that diff.

[rcx026]

Write all numbers and letters from that diff.

Thanks, here's the numbers:

017525053/F
AAT 09040



Also I've got a longer version of the diff with these numbers:


017 525 131B
AZE 05073
01H 525 085 A

[rcx026]

Also does anyone know why the pinions are so long on these axles? The long tail on them is just hollow and I can't figure what it's function is!

[Sam]

Thanks, here's the numbers:

017525053/F
AAT 09040



AUDI 017525053F, rear axle housing: Part Info (http://vagpart.com/parts/aud-017525053f/)


Also I've got a longer version of the diff with these numbers:


017 525 131B
AZE 05073
01H 525 085 A

AUDI 017525131B, flange with: Part Info (http://vagpart.com/parts/aud-017525131b/)
VOLKSWAGEN 017525131B, flange with: Part Info (http://vagpart.com/parts/vw-017525131b/)

AUDI 01H525085A, housing: Part Info (http://vagpart.com/parts/aud-01h525085a/)

[rcx026]

Nice one, that's great information! Just what I needed to know to find more of these.

[zollaf]

its long cos of the torque. when the car accelerates or brakes the diff kicks up and down. a long nose with a bush in the end has less force on it that a short nose with a bush in the end. its as simple as that.

[rcx026]

Thanks. Do you know if the Quattro gearbox that these axles come from reverse the engine rotation? They come from Audi 100, Audi 200, also Audi S2 has similar.

I planned to use these for a 4x4 buggy, but they turn the wrong way when connected to a traditional 4x4 drivetrain (i.e. rear wheel drive gearbox mated to transferbox). Bit stuffed for what to do now. These axles are supposed to be very strong and they have simple lockers built in so they are good to use. I might have to ditch them or see about fitting additional custom mini gearbox to reverse direction.

[owas]

AAT ratio is 4.11
And this code 017525053F is corpuse number, not telling what inside diff. And it is located in these models
AudiA10QAudi 100/Avant quattro1985 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1985/drive_standart/62/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1986 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1986/drive_standart/62/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1987 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1987/drive_standart/62/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1988 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1988/drive_standart/62/hg_ug/525/subcategory/50000/part_id/0/lang/e)
AudiA10QAudi 100/Avant quattro1988 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1988/drive_standart/88/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1989 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1989/drive_standart/88/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1990 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1990/drive_standart/88/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1991 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1991/drive_standart/88/hg_ug/525/subcategory/50000/part_id/0/lang/e)
AudiA10QAudi 100/Avant quattro1991 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1991/drive_standart/119/hg_ug/525/subcategory/525020/part_id/0/lang/e) 1992 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1992/drive_standart/119/hg_ug/525/subcategory/525020/part_id/0/lang/e)
AudiA10QAudi 100/Avant quattro1993 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1993/drive_standart/139/hg_ug/525/subcategory/525020/part_id/0/lang/e) 1994 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A10Q/year/1994/drive_standart/139/hg_ug/525/subcategory/525020/part_id/0/lang/e)
AudiA20QAudi 200/Avant quattro1985 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1985/drive_standart/63/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1986 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1986/drive_standart/63/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1987 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1987/drive_standart/63/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1988 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1988/drive_standart/63/hg_ug/525/subcategory/50000/part_id/0/lang/e)
AudiA20QAudi 200/Avant quattro1988 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1988/drive_standart/89/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1989 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1989/drive_standart/89/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1990 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1990/drive_standart/89/hg_ug/525/subcategory/50000/part_id/0/lang/e) 1991 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A20Q/year/1991/drive_standart/89/hg_ug/525/subcategory/50000/part_id/0/lang/e)
AudiA6QAudi A6/S6/Avant quattro1995 (http://etka.cc/audi/part_single/catalog/au/markt/RDW/modell/A6Q/year/1995/drive_standart/155/hg_ug/525/subcategory/525020/part_id/0/lang/e)

[zollaf]

Thanks. Do you know if the Quattro gearbox that these axles come from reverse the engine rotation? They come from Audi 100, Audi 200, also Audi S2 has similar.

I planned to use these for a 4x4 buggy, but they turn the wrong way when connected to a traditional 4x4 drivetrain (i.e. rear wheel drive gearbox mated to transferbox). Bit stuffed for what to do now. These axles are supposed to be very strong and they have simple lockers built in so they are good to use. I might have to ditch them or see about fitting additional custom mini gearbox to reverse direction. same as whats in my s4dont think they reveres the rotation at all. never checked though. you could turn the diff over though.

[rcx026]

you could turn the diff over though.
That's what most people do, they just flip the diffs over. I could do it but I'd need to raise the engine by 100mm as the sump will no longer tuck around the diff so it's no ideal but it is a solution. Plus oil and design issues of the diff running upside down.

I looked at switching to a mid engine design but that requires shorter drivetrain to fit into half the car's wheelbase.