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View Full Version : Axles for s4 uprights/brakes on early 1.8tQM



Urtorsen
05-19-2015, 01:39 PM
Ok I'm pretty much ok with all specifics on the swap apart from one thing. I'm only 95% sure on it so said I'd throw it out here to see if there's a definitive answer from people who've done it with early type manual B5 Q
All I'm concerned about is the inner of the axles as most of us already know about the larger outer CV hub dia
I've been searching abs there's a few different 'official' statements
One is (and sounds correct) that if you use any 2.8QM or later model (large outerCv)1.8TQM axles on your early 1.8t it's bolt em up n go.
Others say that there's a difference in the trans receiving flange or inner CVs on the early 1.8T and 2.8/late 1.8t mentioned above.. I had thought the only differences on inner cv on any of our 5spd manual axles were the grease caps/retainers.
So from my understanding ALL 2.8QM axles are a direct fit. ONLY late model (generally2001 ) 1.8TQM axles are a direct fit.
Im about to order 2.8QM axles but question is if they actually had variants on inner CV over the years.
Would be great to clear this up so I can get the correct axles first time. Thanks in advance

MetalMan
05-19-2015, 01:53 PM
The inner CV joint size for manual transmission only varies between FWD and Quattro for the A4. 100mm inner joint for Quattro, 108mm inner joint for FWD and S4.
You should be good to go for 2.8QM axles to fit any 1.8TQM with S4 uprights.

Urtorsen
05-19-2015, 04:40 PM
Hope so.... Bout to order them up

Bordom
05-19-2015, 04:54 PM
I concur with MetalMan. Any 2.8QM axles will fit. 2001 1.8TQM B5's upgraded to the V6 axles

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xdewaynex
05-19-2015, 06:32 PM
Im glad this came up. Ive been thinking of picking up some S4 uprights so I can upgrade to bigger front brakes and wasnt sure what axles would fit, being I have a 98QM

So S4 aluminum up rights with the different lower control arm and any year 2.8QM axles?

Bordom
05-19-2015, 06:40 PM
That's correct. B6/7 uprights will also work as they are essentially the same design (but with the bolt in wheel bearing)

You don't have to use the different straight control arm as it is just a different taper. Ram your old one in there and it should be fine. (I was going to do this as I just put in fresh arms, plus it's really ghetto and will get you by until you can properly change it out)

Mad Cow
05-19-2015, 07:06 PM
You don't have to use the different straight control arm as it is just a different taper. Ram your old one in there and it should be fine. (I was going to do this as I just put in fresh arms, plus it's really ghetto and will get you by until you can properly change it out)

That doesn't seem too safe... I'd just grab a pair of control arms from a partout or junkyard and throw those on if I was in that situation.

Bordom
05-19-2015, 07:08 PM
That doesn't seem too safe... I'd just grab a pair of control arms from a partout or junkyard and throw those on if I was in that situation.
That's why i said it was Ghetto. Things in the ghetto aren't safe lol

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Urtorsen
05-20-2015, 01:43 AM
Well I picked up both L&R b6 uprights tonight. Lower Control arms, ABS sensors included but the control arms are shitty looking at the balljoints. B7 calipers and 2.8 driveshafts on the way soon. Just need to order new control arms, B7 a4 rotors and pads.
Just installed new 312mm rotors,akebono pads and control arms last month,silly to some but I just spent a few days driving my girls B7 and the brakes are very very impressive, and are a necessity to me seeing that the car now has a quite bit of go lol. Hopefully somebody will buy these 4 B5 lowers they've not even seen 500 miles ....... Doh!

xdewaynex
05-20-2015, 02:16 AM
Quick question, are the facelift B5 A4 spindles the same as the S4's? Might be a little easier to come across if they are.

Bordom
05-20-2015, 03:36 AM
They are not.

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xdewaynex
05-20-2015, 04:49 AM
Alright just wanted to check.

So B5 S4's had aluminum uprights, what cars came with steel ones, and do they use the same lower control arms as the aluminum ones?

Bordom
05-20-2015, 05:27 AM
Early S4 98-01 had aluminum. They switched to steel after 01 for some reason

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Mad Cow
05-20-2015, 06:05 AM
Alright just wanted to check.

So B5 S4's had aluminum uprights, what cars came with steel ones, and do they use the same lower control arms as the aluminum ones?

Steel S4 uprights use the same arms are regular B5 uprights.

xdewaynex
05-20-2015, 06:25 AM
Steel S4 uprights use the same arms are regular B5 uprights.

Im assuming the same on the B6/7 with just bolt in bearings, steel as well?

Mad Cow
05-20-2015, 06:54 AM
B6/7 are aluminum with bolt in bearings. As far as I know all steel uprights use press in bearings and all aluminum use bolt in.

mysman
05-20-2015, 08:08 AM
The inner CV joint size for manual transmission only varies between FWD and Quattro for the A4. 100mm inner joint for Quattro, 108mm inner joint for FWD and S4.
You should be good to go for 2.8QM axles to fit any 1.8TQM with S4 uprights.

I've got an AEB FWD, so it sounds like my present axles will work for the S4/B6 upright conversion?

MetalMan
05-20-2015, 08:49 AM
I've got an AEB FWD, so it sounds like my present axles will work for the S4/B6 upright conversion?

Not quite, unfortunately. Your stock AEB FWD axles have the larger 108mm inner joints like the S4 axles, but 75mm outer hub/bearing size (S4 is 82mm).
You'll need either S4 manual axles, or 2001 1.8T FWD manual axles.

mysman
05-22-2015, 08:57 AM
Got it. Thanks. Seemed to recall I needed axles, but got excited instead, lol.