4000Q 5-bolt Conversion

[Kaklikian, Gary]

Thanks for the reply, Chris. Next setup we're going to try is the 90Q
uprights and carriers with UrS4 hubs and 90Q axles. I believe the S4 hubs
are thicker (offset further out) than the 200Q hubs, so I won't need the
25mm spacers for the tires to clear the tie rods. I think this will require
the outer CV's from a 20v 90Q and probably the carriers as well.  As far as
I know, the 90Q outer CV's will not fit on the 4000 axles.  

What a PITA -- doing all this so I can run 17x8.5" wheels with 235/40 track
tires (with UrQ flares as well).

You don't happen to have a spare UrQ front suspension for sale, do you?

Gary

-----Original Message-----
From: chris at force5auto.com [mailto:chris at force5auto.com]
Sent: Sunday, August 19, 2001 6:16 PM
To: quattro at audifans.com
Subject: RE: 4000Q 5-bolt Conversion




> -----Original Message-----
> From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
> Behalf Of Kaklikian, Gary

> We've tried both the 10v and 20v 80/90 carriers, and in both cases, the
> 5000tq hub was binding against the bearing housing. This is with 4kq rear
> axles on opposite sides in the front.

Yeah, I'd seen that also, and if you mill the housing down you'd lose the
outer circlip race. Not a viable option for sport driving.

> The 10v and 20v 80/90 uprights appear to be the same - it is the carriers
& hubs that are different. The wider
> track on the 20v comes from a thicker hub than the 10v.  Even the 10v  hub
> is thicker than the 5000tq hub.

Agreed on the above. I suppose RS2 hubs are the factory answer.

>  The EKTA shows different part numbers for
> the late '89-on 10v carriers w/ABS than the '88-early '89 10v
> carriers w/out ABS, but I don't know if this is simply because of the ABS
sensor
> housing or some other change in dimensions.

Differences are ABS and non, as well as 2pc vs 1pc front struts.

> There was a suggestion that A4tq front hubs will work with the
> 80/90 struts, but I doubt the spline would be compatible with the 4000
rear
> axles.  Maybe with 80/90 front axles?

I've never gotten into swapping A4 hubs into older housings, but why not
work with the issues you've initally identified. How about late 200tq hubs
into your 10v housings with 90q outer CV joints onto your existing shafts?
That would give 5bolt, bolt style outer Cv's to match the hubs, and a usable
bearing diameter that's off the shelf.

> I'm wondering whether anyone has used 80/90 struts w/4000 rear axles and
> 5000tq hubs ??
> Gary

My car just runs the ur-q units, 'cause they work.

-Cheers,
Chris Semple
Concord NH
'84 4000tq Lightweight, w/Fuchs