Hot PS fluid

[ss dave]

I'm running a 1990 chevy style power steering pump plumbed into a rebulit stock Z/28 quick ratio ps box. Prior to this had a stock ps pump with attached resevoir and didn't have any hot fluid problems, it just leaked. Decided to upgrade with separate pump and resevoir. Now within ten minutes of normal driving the fluid, resevoir are way too hot and the pump feels like it fails. The lines are braided steel with rubber, I have read where the lines should be nylon lined, could this be the problem? Or what?Or is the pump itself? Thanks for any advice.

[Rick Dorion]

I have a new DSE pump and steering box and after 20 miles I can blister my skin if I brush against a braided line fitting

I don't know if that's normal though.

The high pressure line is teflon lines braided SS.

[ProTeal55]

Might want to invest in a PS cooler.
Will pro-long the life of the fluid , as well as the pump itself....

[Little Bob]

I used to have that problem on my track car. I would do a 20 minutes of hot laps and the power steering fluid would boil over. So I went out and bought underdrive pullies and the problem was gone. See about getting a set of underdrive for your car.

[ss dave]

Thought about adding cooler- good idea regardless, but it doesn't address the issue of why it overheats. If the underdrive pully is the answer then does that mean the pump is creating to much pressure or is pumping more fluid than can be used by the steering box?

[David Pozzi]

Are you sure the internal pump valves are installed correctly?
If the car is sitting still, the fluid should be bypassed and very little heat built up.