83 Urq tranny compatibility w/4kq?

[urq]

... I thought the original request was the difference between an '83 urq and
an '84 4kQ ... both cars have the actuator on the rear diff with a Bowden
cable to the transaxle.  

Steve B
San José, CA (USA)

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of Vittorio Bares
Sent: Monday, June 11, 2007 5:13 AM
To: Martin Pajak; Louis-Alain Richard; quattro at audifans.com
Subject: RE: 83 Urq tranny compatibility w/4kq?

Thanks for the info. 

I did end up picking up an 84 4kq tranny. I found another small
difference, which is the center diff locking mechanism on the earlier
4kq's was cable driven, not vacuum. This requires building a bracket.

We built one that would just keep the center diff locked always - its
removable in case we ever find the need.

-----Original Message-----

You basically covered it nicely.
The only other difference is that the 4kq tranny has small output
Flanges while Ur-q has the large ones, but that's just a matter of
swapping out of your original.  Also, starting '84 the bellhousing 
has a notch to clear the new style MC/3B/AAN flywheel sensors.

Hope this helps.

Martin Pajak

http://www.quattro.ca

-----Original Message-----

Swappable, sure. Physically at least.

But there is some difference:

- Final drive ratio, 3.89 for the urQ, 4.11 for the 4kq.
- Some gears are different, as the 1983 urq has very short first and
second
gears, then a hole, then 3-4-5 are closely spaced. To resume, urq 1983's
are
6 speed gearbox missing the 3rd... 4kq are better, more envenly spaced.

Louis-Alain
1983 Quattro


> -----Message d'origine-----
> 
> Does anyone know what the differences between the 83 Urq and the 84
> 4kq tranny's are?
> 
> Are they compatible (swappable?)