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Old 01-20-2012, 01:15 PM
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Running PS pump empty

I am running a SBC fresh rebuild, with alternator and PS pump in place on a test stand. That means the PS pump is empty and not attached to the steering box. It's the pre 90's Saginaw style with the reservoir attached. Can the pump be damaged if ran empty for the breaking period of 15-20 minutes? It's a one belt serpentine system for the hot rod. What's your experience? Thanks.

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Old 01-20-2012, 03:59 PM
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I wouldnt chance running that pump dry. The fluid in the tank lubricates the pumps moving parts. You could cut an old hose and run it directly from your pressure side of pump back to the return side. BTW I like run 30+ minutes on a new break-in.
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Old 01-20-2012, 04:28 PM
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Quote:
Originally Posted by fierosum
I am running a SBC fresh rebuild, with alternator and PS pump in place on a test stand. That means the PS pump is empty and not attached to the steering box. It's the pre 90's Saginaw style with the reservoir attached. Can the pump be damaged if ran empty for the breaking period of 15-20 minutes? It's a one belt serpentine system for the hot rod. What's your experience? Thanks.
You will ruin it, it depends on the fluid for lubrication. Why not just get a short belt to run the water pump for the engine stand break in
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Old 01-21-2012, 10:41 AM
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your kidding us, right?
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Old 01-21-2012, 12:48 PM
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Quote:
Originally Posted by ogre
your kidding us, right?
Don't know who that is directed to.
I am trying the short tube joining the two lines. I did switch the water pump to the std rotation (CW) with a short belt around the w/p and h/b only to break in the motor. I switched the w/p back to the reverse rotation with the serpentine belt around the p/s pump, h/b, alt and w/p. The belt runs under the smooth face of the w/p pulley. Joining the two ports sound the safest and best way for me. I will report back when I run it again. Thanks.
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Old 01-21-2012, 12:54 PM
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Originally Posted by T-bucket23
You will ruin it, it depends on the fluid for lubrication. Why not just get a short belt to run the water pump for the engine stand break in
X2 it can ruin it pretty quick like this, The short belt and not running the p/s on break in would be best.



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Old 01-23-2012, 01:15 PM
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Final update

After attaching a short hose to connect the two ports at the rear of the p/s pump, I ran the engine on the test stand with no issues what so ever. Thanks for everyone's input.
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