Re: 4kq with turbo vs. UR quattro

[Martin Pajak <urquattro@wave.home.com>]

Pat,

> Not sure why anyone would spend a
> substantial amount of time converting to 5 bolts.   And stock 4kq cv's and
> drive axles would do just fine also.
>

CV's and drive axles are the same thing.  I was refering to the strut itself.  I
know myself I would want to move to the stronger 5k/Ur-q style strut.  You can
stay with 4 bolts if you use the 5k hubs.

> The hydrolic system on UR's is no where near as reliable as on the 4kq.  If
> you scrapped the power steering and braking than you would probably be
> right.  Your right about mainly just being a body differance depending on
> how many systems get replaced.
>

If one is serious about rallying (converting an Ur-q is a sign of serious
intention to me) one would go with non assisted triple master cylinder setup
(two for the brakes and one for the clutch).
I would never even think of using the hydraulic system on a rally car.  Too many
things can go wrong and the weight penalty is there also.

>
> Regular hydrolic fluid but still not a bulletproof system.  And I would not
> brag about brake feel on hydrolic assisted brakes.  The ones that I have
> driven did not have as good of feed back as the vaccum assisted.

That is why I changed to vacuum as soon as I got my Ur-q.

>
> I have only worked on an 82 and 83 and both of those had substatial
> problems.  Most of the stuff that were problems would be solved by a new
> harness.  But with the existing fuse box it is a nightmare.
>

Half way through 1983 Audi updated the Ur-q with the newer (same as 4kq) fusebox
(under the hood).

My point is that if you are building a rally car the only difference between the
two would be the body style.
You would still have to remove the engine/drivetrain to prapare the car.
And I bet you the bare Ur-q shell weighs less than a 4kq shell.  Reason for this
is the extra metal in the extra doors and framing for them. The only reason the
road going Ur-q is heavier than the 4kq is in the equipment (air, hydraulic
system, turbo etc.).

Cheers
--
Martin Pajak

http://www.geocities.com/MotorCity/5939

1983 Audi Ur-quattro (229,000 km)
1986 Audi 4000 S Quattro (415,000 km) with 5 bolt pattern