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 S4 b8 Mrc Stage 2.... knackered rear diff View next topic
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natedogg1983
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Car: Caddy time for now

Joined: 02 Jan 2015
Posts: 188


PostPosted: Sat Jul 08, 2017 12:13 pm  Reply with quoteBack to top

Does anyone know where the code would be stamped on the diff.
I'm going to ask for a picture of it to proves it is a match.

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mikey-s
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Location: Mars

PostPosted: Sat Jul 08, 2017 2:40 pm Reply with quoteBack to top

Do you not have a data sticker in the boot?  Not sure if the newer cars still have this, but if it's there it should have the diff code on it.

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pjbRs
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Car: Noggy blue b5 Rs4

Joined: 20 Jul 2010
Posts: 7495

Location: west london

PostPosted: Sat Jul 08, 2017 3:47 pm Reply with quoteBack to top

natedogg1983 wrote:
Ok so they say the code is a match. 😀😀😀
I can't believe I didn't find this myself, thanks for the help.
I'm going to order the diff on Monday and then go from there.
I may still sell the car once fixed or px for a b5 s4 and cash my way. I will keep you all updated.
Fingers crossed this sorts my problem.



What a result
I think you owe the guy a beer if it's the correct part.
Fingers crossed for you bud.  

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natedogg1983
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Car: Caddy time for now

Joined: 02 Jan 2015
Posts: 188


PostPosted: Tue Sep 05, 2017 7:52 pm Reply with quoteBack to top

So for the last few weeks the car has sat on my driveway whilst I find a new diff...which I haven't been able to find.
 Everything seems to be a differnt part number, I don't know if I should risk buying one with a different part number and trying to make one out of 2.

I have basically given up hope on the car and just want a b5 S4 again.
Open to offers if anyone wants to try fix this and make some cash.
Fully working this car is worth 16k with the amount of options.
Think it may end up on ebay in the next few weeks to see what Its worth.

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natedogg1983
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Car: Caddy time for now

Joined: 02 Jan 2015
Posts: 188


PostPosted: Tue Sep 05, 2017 8:00 pm Reply with quoteBack to top

I've also came to the conclusion that the previous owner (audisrs member) knew about the fault
. The car had a very loud miltek delete pipe installed aswell as the milltek non res.
I asked him if he had the centre silencer which he did and I bought off him.
When I had this installed it turned out the delete pipe was like new so basically put on to hide the very faint noise of the rear diff.
But by that point It was way too late and I've probably been in denial that a fellow srs member would do such a thing but it does all make sence now.
Can't trust anyone these days.

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jockthedog
Experienced


Car: S4-B5.3
Power: C5-RS6Plus
Torque: in' hell!
Engine code: 0xFA

Joined: 14 Mar 2011
Posts: 3132

Location: Moonbase Alpha

PostPosted: Tue Sep 05, 2017 8:22 pm Reply with quoteBack to top

What is the P/N?

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jockthedog
Experienced


Car: S4-B5.3
Power: C5-RS6Plus
Torque: in' hell!
Engine code: 0xFA

Joined: 14 Mar 2011
Posts: 3132

Location: Moonbase Alpha

PostPosted: Tue Sep 05, 2017 8:26 pm Reply with quoteBack to top

nvr mind I found it. >6k new.

You absolutely need the Q version btw.

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natedogg1983
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Car: Caddy time for now

Joined: 02 Jan 2015
Posts: 188


PostPosted: Tue Sep 05, 2017 8:57 pm Reply with quoteBack to top

When I look on ebay adverts they never have a part number like mine. They seem to be on a few models ( a8, A5, a4)
I've never seen one with a Q in the code.
Where did you get the info from?
Cheers

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jockthedog
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Car: S4-B5.3
Power: C5-RS6Plus
Torque: in' hell!
Engine code: 0xFA

Joined: 14 Mar 2011
Posts: 3132

Location: Moonbase Alpha

PostPosted: Tue Sep 05, 2017 9:33 pm Reply with quoteBack to top

This helps....

https://audi.7zap.com/en/usa/audi...ttro/a4q/2013-736/5/500-500011/#1

Codes are on the right of the picture.
I read 35/9 somewhere in this thread - the final drive ratio of 3.889 which has to match your front diff ratio.
The sports diff has clutches which I see on the lower pic - so it's the Q version you want.
1) If it's not Q or S, it's not a sports diff and
B) if its ratio matches yours, that's your one.

You MIGHT find a stamp on the casing somewhere, but that may simply be for the casing itself.
I remember now, these are basically sealed units. Shame. If you break this car, please send me the diff for a look-see?

Hmmm there are several repair kits listed for the sports diff...

https://audi.7zap.com/en/usa/audi...tro/a4q/2013-736/5/525-525025/#60

700 euros for the #64 items
200-odd for the #60 bits.

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natedogg1983
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Car: Caddy time for now

Joined: 02 Jan 2015
Posts: 188


PostPosted: Tue Sep 05, 2017 9:48 pm Reply with quoteBack to top

Nice one cheers.
My problem seems to be finding out if they have the same final drive ratio.
nearly all the adverts don't state that information.
Most have similar part numbers to this one
http://www.ebay.co.uk/itm/322585822891
I think that a sport diff as has the motor on the back but I may be wrong.

Would the car drive without noises if I avoided 7th gear and just fitted say this one.
Then WBAC it.

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natedogg1983
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Car: Caddy time for now

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Posts: 188


PostPosted: Tue Sep 05, 2017 9:53 pm Reply with quoteBack to top

A few others a fellow member spotted...
http://www.ebay.de/itm/322434226701
http://www.ebay.co.uk/itm/112041089167

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natedogg1983
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Car: Caddy time for now

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PostPosted: Tue Sep 05, 2017 10:19 pm Reply with quoteBack to top

Think I have found one in Germany....
Same part number. But doesn't state the final drive.
Does this look right to you?

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jockthedog
Experienced


Car: S4-B5.3
Power: C5-RS6Plus
Torque: in' hell!
Engine code: 0xFA

Joined: 14 Mar 2011
Posts: 3132

Location: Moonbase Alpha

PostPosted: Tue Sep 05, 2017 11:07 pm Reply with quoteBack to top

http://www.ebay.co.uk/itm/3224342...r_id=1302527342317&rmvSB=true

Label on that 8K0927277 is showing as superceded by that #60
It's the pump motor!
So no clue there.

This one

http://www.ebay.co.uk/itm/1120410...r_id=1302537939954&rmvSB=true

looks to be the same motor but the only small clue is some code numbers on the housing in one pic. Don't mean much but don't be surprised to see 359 somewhere.

Ach ffs the other part number is the shield. No wonder you couldn't figure this out.

Best to message them in ebay and ask what final drive ratio is. If they don't know, walk away.

This one is missing part of the harness

http://www.ebay.co.uk/itm/1120410...r_id=1302537939954&rmvSB=true

The lower the final drive ratio, the faster the car off the mark, but top speed in each gear is lower.
I'd expect a sporty setup to want exactly that. Which would be the S type diff - 37/10 ratio.
Are you sure yours is 35/9?

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natedogg1983
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Car: Caddy time for now

Joined: 02 Jan 2015
Posts: 188


PostPosted: Wed Sep 06, 2017 1:52 am Reply with quoteBack to top

http://www.ebay.de/itm/172603311088
That is one from Germany but is a Q  code.
No I'm not sure at all about the ratio.  Adrian E from this forum mentioned it earlier in th post.
It's been a nightmare.

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xpower
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Car: S4 B8

Joined: 29 May 2015
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PostPosted: Wed Sep 06, 2017 8:36 am Reply with quoteBack to top

http://www.oemepc.com/audi/part_s...bcategory/500011/part_id/0/lang/e

0BF500043Q
rear axle differential 35/9
code letter:
Model data: PR-G1D+TC6,
T41
MKX,MBU,LFU
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