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How to reduce PS pump boost?


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Changing the input assembly of your box for one with a larger torsion bar will get rid of that over assisted feeling. It is a bit of a pain to do. As for how to change the stock pump pressure I'm not any help.

 

Here is a link showing what is inside a Mustang Saginaw box.

https://www.7173mustangs.com/thread-playing-with-steering-boxes-spa-s-fixed-ratio-spa-af-variable-ratio-firebird-12-7?highlight=12.7:1+quick

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u can go on ebay and look for a by-pass valve. it connects the 2 fluid lines together and valve in between. opening the valve takes the hi side and flows it into the low side giving u less pressure. the more u open the closer it gets to manual steering.

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Summit also sells one.

73 Grande H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

 

- Jason

 

 

082-hot-rod-power-tour-2017-1970-1970s.jpg

 

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Just watched a U-Tube video of 73 build. The owner is using a Heitz (don't know if that is spelled right) pressure regulator tied to his PS system to keep fluid pressure from increasing as engine revs higher.

 

Paste this to your browser to watch the install ........https://www.youtube.com/watch?v=q335MzHhc8A ........

 

Be advised that there is more going on in this video than PS. Brakes, Clutch, et. You may have to move FF on video to get to PS segment.

 

Hope this will help.

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