CAUTION power steering pump pressure
Hi there,
There has been some posts about mounting various power steering pumps to a SBF. Be aware that the Mustang II power steering rack likes less than 800psi pressure; spec max is 1000. GM pumps (and others) put out too much pressure and need to be modified to prevent blowing up the rack; or use a Heidts proportioning valve to reduce pressure and give more steering feel. Check internet for pressure reducing methods.
Enjoy,
Jeff
Which power steering pump?
Quote:
Originally Posted by
Jeff's First FFR
Hi there,
There has been some posts about mounting various power steering pumps to a SBF. Be aware that the Mustang II power steering rack likes less than 800psi pressure; spec max is 1000. GM pumps (and others) put out too much pressure and need to be modified to prevent blowing up the rack; or use a Heidts proportioning valve to reduce pressure and give more steering feel. Check internet for pressure reducing methods.
Enjoy,
Jeff
For me I chose a 1965 Mustang power steering pump because of its pressure (800-850psi) and cost ($100-150); even available in chrome for an up charge. Even with its low pressure the steering was too light for me so I added the Heidts adjustable valve...perfect! I have the CVF V-belt FEAD with the Bronco PS bracket and everything fits.
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Why you need to adjust the power steering pressure
This is why you want to reduce the power steering pump pressure
I was out on the track at Indy and the engine was seeing about 6G rpms and just as I was finishing my session out on the track the steering got really hard to steer. I missed my pull in off the track so fought with the steering wheel to get back to the pit pull in. There was the director asking me to pull over. He had me stopped there for a few minutes then asked didn't you see the flag. Yup I saw the flag and if you would let me through I can get the car into the pits before it dumps the power steering fluid all over your shoes. By then I began to know what had happened. Red fluid was dropping on his shoes. then he looked down and said you can go now...
The pressure blew the hose right out of the rack! Notice the left - there are NO threads to install the power steering hose!!
Attachment 189026
He had walked right up close to the front of the car. I think was trying to "make a point"!