Power steering overheating, or?

[George Roffe]

Kevin Hart wrote:

>Not postive that cooling is the issue totaly.  My auto, auto's didnt
>have the finned cooler just one ran all the way to the front of the
>rad,  would loose PS during a hard autocross event.  Just typical
>caviation.  Possibly extend the cooler up to the front, use a b14
>resovor to combat it puking everywhere...and anything else you can do
>for it.  Get a underdrive pulley would help a lot as well.

Cavitation is the issue.  Cavitation is localized boiling.  Cooling is the
secondary issue.  Fix the cavitation and you've fixed the problem.  If you
don't fix the cavitation you can treat the symptom by cooling the fluid more.

The orifice the coolant must pass through when pumped is tight and has
sharp corners.  Open that up some and smooth it out some and you can reduce
the cavitation.  Beware lowering the pressure too much though.

George Roffe
Houston, TX  USA
http://www.nissport.com