Power Steering Pump Pulley

[TX '90 ZR1]

While verifying my findings on a noise from a driven accessory, (In a separate thread "Water Pump Rattle?), I notice the power steering pump pulley is not running exactly true. Have not noticed before and am experiencing no issues from this. Paying such close attention to the driven accessories brought this to my attention.
I estimate it is about 1/8" from running true.
Normal ? Maybe an issue?
What are we doing for pumps if one is needed?
I think Jerry has pulleys.
Thanks for everyone's help in advance.
:cheers:

[secondchance]

Runout by 1/8" is not normal. I would check and make sure the pump is mounted correct.
If a replacement pump (I believe power steering pump is ZR-1 specific) cannot be located, my suggestion is to have Turnone rebuild the pump.
https://turnonesteering.com/

[TX '90 ZR1]

Runout by 1/8" is not normal. I would check and make sure the pump is mounted correct.
If a replacement pump (I believe power steering pump is ZR-1 specific) cannot be located, my suggestion is to have Turnone rebuild the pump.
https://turnonesteering.com/

I thought it was out of the ordinary also. Can't believe I had not noticed it before! I'll do a little more investigating the cause when I am changing the water pump, hoses, etc.
Thanks for chiming in.
:cheers:

[Great White]

I figured I'd back up the Turn One recommendation:

I've had some experience with a Turn One power steering pump. I can comfortably say they are one of if not the best power steering pumps on the market. I had one of their modified pumps on an '00 Z-28. It worked flawlessly, ran cool, and gave very good road feedback.

[jss06c6]

Has the pump been pulled before? If so, someone didn't seat the pulley all the way. It will definitely wear out the belt, which will fail eventually. Make sure you have the right pulley too.

Sent from my SM-G950U using ZR-1 Net Registry mobile app (http://r.tapatalk.com/byo?rid=90383)

[TX '90 ZR1]

Thanks for the feedback Steve.
Pump and/or pulley have not been off since I have had the car. Not sure before I got it.
Will be checking out the cause next week when I have it apart for the water pump change.
:cheers:

[carter200]

Thanks for the feedback Steve.
Pump and/or pulley have not been off since I have had the car. Not sure before I got it.
Will be checking out the cause next week when I have it apart for the water pump change.
:cheers:
Kenny,
www.rockauto.com

[A26B]

New GM NOS OEM

(Used are also available)

https://www.jerrysgaskets.com/pulley-power-steering-pump-new-90-95-8c3/?_ga=2.197634095.1888870124.1621082963-78982401.1592494539

[TX '90 ZR1]

Kenny,
www.rockauto.com

Hey Carter,
Thanks. I need to do a bit more checking to find the "for sure" issue. Should happen next week.
Good to hear from you.
:cheers:

[TX '90 ZR1]

New GM NOS OEM

(Used are also available)

https://www.jerrysgaskets.com/pulley-power-steering-pump-new-90-95-8c3/?_ga=2.197634095.1888870124.1621082963-78982401.1592494539

Thanks Jerry. I had noticed you had pulleys if that is what I need.
The shipment from you (water pump, hoses, etc.) is scheduled to be delivered today, so will start working on it in a day or two.
Appreciate all your support.
:cheers:

[TX '90 ZR1]

Bringing this thread to a conclusion.
While swapping out the water pump, hoses, etc. I went ahead and pulled the power steering pump assembly to see what was going on. Could not find anything unusual. Reinstalled unit making sure everything is in the proper position. Pulley appears to run true now. I guess something was not seated up quite right?
Thanks guys!!
:cheers: