Ur Quattro steering rack HELP!!!

[Blagave]

Hello,
I am hoping someone might be able to share a possible cause for my steering issue.

I have a 83 UR quattro with the stock 75 bar steering pump and steering rack. The steering rack has been rebuilt.

This issue I am having is the car steers well until i hit 5,500 rpm and after that the front end darts and it feels like there is no pressure to the steering wheel. I have to put very little input for any correction and it is a bit of handful.

Any ideas ?

Thanks

[Crasher]

Could be the rack or the pump over pressurising. It would make sense to get the pump rebuilt and hope the rack is good.

[Blagave]

Could be the rack or the pump over pressurising. It would make sense to get the pump rebuilt and hope the rack is good.

Crasher.......agree 100% with what you are saying about over pressurizing. Since the rack has been rebuilt and way harder to remove, I think my next move is to send the power steering pump out for rebuild. I am curious if anyone else has had this issue.

[Crasher]

You can buy rebuild kits and the single stage pump is very simple to rebuild.

[Blagave]

Do you have a link fir a rebuild kit?

[Crasher]

This is the only source I know of https://www.autewo.de/search?sSearch=035198049a

[GT500]

Pretty sure the pipe from the pump has an in built restrictor. Are your pipes audi ones?

[Blagave]

This is the only source I know of https://www.autewo.de/search?sSearch=035198049a

Thank you

[Blagave]

Pretty sure the pipe from the pump has an in built restrictor. Are your pipes audi ones?

Yes, the maintenance book shows a relief valve and states “don’t remove”
The hoses are new / modified, but more or less the same diameter hose and lengths

[GT500]

Yes, the maintenance book shows a relief valve and states “don’t remove”
The hoses are new / modified, but more or less the same diameter hose and lengths

I had the original ends put on new pipe and it didn't work.

[Blagave]

That’s interesting that your new hoses created an issue with your steering. Unfortunately, with the 20v motor and radiator angle, I need a slightly longer hose for the high pressure side.
the shop that made the hoses used the same
ID of the oem hose for the new hose.

[GT500]

That’s interesting that your new hoses created an issue with your steering. Unfortunately, with the 20v motor and radiator angle, I need a slightly longer hose for the high pressure side.
the shop that made the hoses used the same
ID of the oem hose for the new hose.

I got around it by buying a pipe for a different Audi, probably c4 v6. It was longer (i have 20v in ur). The end at the rack was different but that was easy to use the car's original end. I made a sleeve to join the metal parts of pipe together. Brazed it.

[4WDrifter]

Just wondering if you’ve made any progress with your issue?

[Blagave]

Just wondering if you’ve made any progress with your issue?

I have been traveling, so haven’t had a chance to go any further with the power steering issue. I think my first step will be replacing or rebuilding the power steering pump when I get back

[saltinot]

Do you have a link fir a rebuild kit?

I have rebuilt a few pumps using the Rennbay kit. These are state-side too.

Rebuilding is easy to do as long as you keep things organized and clean.