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Old 06-11-2003, 10:10 AM
Jag Daddy's Avatar
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Power Steering pump pressures

Does anyone know the typical PS pump pressure for a Chevy pump. I want to use some angle fittings and need to know what kind of pressures I might be dealing with. Also will brass fittings work ok for making hose angle changes.

Regards
Mark

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Old 06-11-2003, 10:38 AM
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P/s pumps put out around 1000 pounds under right conditions. Amount of flow or pump volume is also important , tight angle fittings have smaller internal passages and will restrict flow, going up in size of fitting will help , if possible. just switch to some AN hoses with proper angle fittings
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Old 06-11-2003, 11:56 AM
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Don't use brass. Pressures are up there where real hydraulic fittings are needed.
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Old 06-11-2003, 12:00 PM
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The reason I was asking is I want to replumb my Jag's steering rack, I'm not sure of the proper pressure for the Jag's rack I was a bit conerned that the Chevy's pump might be over pressuring the Jag rack and would cause it to blow seals. At 300.00 a pop I don't want to mess up a new rack. I don't like the way the lines are just held on to the PS pum with hose clamps. I'm sure thats one of my leak sources now. Any ideas for repairing the existing lines so I can use fittings?
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Mark
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Old 06-11-2003, 03:56 PM
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Power Steering Pressure

JD, you can buy a kit that lets you reduce the pressure in the GM pump. It is simple to install and it comes with three options. When I get a chance, I will try to find the remaining parts and litature to provide the supplier and pressure options available. I bought the kit to reduce the output of the PS pump to work better with the MII power rack. I did get mine from Campbells Vintage Automotive, Tracy City, Tenn. Phone, 913 592 9211

Trees
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Old 06-19-2003, 12:15 PM
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power steering pump

You wont have any pressure problems due to the fact that jag uses a GM pump stock on your jag . you should never have hose clamps on the pressure line only the return line. The return line origanally came out of the rack to a cooler located on the cross member and then back to the pump all theese lines have hose clamps, the pressure line goes from the pump straight to the rack with threaded fittings. the stock pressure line is long enough to reach in your conversion and has the correct fittings already if someone has cut it and put clamps on GET RID OF IT it could blow off and start a fire on the headers . the stock cooler is also not always big enough, go to a wrecking yard and find a ford p/s cooler put it in line after the stock one somwhere in good air flow, your rack will last a lot longer. you can use a tranny cooler also but dont really need one that big lots of ford cars use a cooler now about the size of a small heater core with nice mounting brackets already installed. Just be SURE and use the correct type of hose
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