Power steering bother

[RocketsGarage]

I've been fighting with a power steering system on a '68 Camaro build for awhile now with no luck. I'm running out of ideas. The system involves a Vintage Air front runner serpentine system for a big block, DSE rack, remote reservoir & braided stainless lines with steel hydraulic AN fittings. 275/18" BFG Rival tires.

The system bleeds out fine, has correct pressure & no leaks that I can find. Once the car is on the ground & warm the power steering pump starts to get noisy & fluid begins to get foamy. The steering performance is ok just don't like the noise etc. The customer plains to do a little light autocross every once in awhile & I don't want problems.

Idea's for a fix?

[dontlifttoshift]

Which reservoir are you using?

[Blake Foster]

Originally Posted by dontlifttoshift

Which reservoir are you using?

and which pump? Vintage air uses the Mavel pump and in our experience with big tires the pump cant handle it

[RocketsGarage]

It's a KRC reservoir & a GM type II pump, tough stuff brand maybe? I've herd the big tires can be an issue with pumps.

[David Pozzi]

How big is the hose from tank to pump inlet? It needs to be -10 minimum, AND have no restrictions or sharp edges or you can get cavitation & foaming.
In the photo, it looks small.

[Spiffav8]

Originally Posted by David Pozzi

How big is the hose from tank to pump inlet? It needs to be -10 minimum, AND have no restrictions or sharp edges or you can get cavitation & foaming.
In the photo, it looks small.

You're just a problems solver aren't ya.

[RocketsGarage]

Originally Posted by David Pozzi

How big is the hose from tank to pump inlet? It needs to be -10 minimum, AND have no restrictions or sharp edges or you can get cavitation & foaming.
In the photo, it looks small.

It's hard to see from the picture but it's a -10 from the reservoir to the pump.