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05-02-2021, 12:03 AM
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#1 |
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Registered User
Join Date: Jul 2003
Location: Tucson, AZ
Posts: 106
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PS Flow Control Valve with Hydroboost
Adding hydroboost to my 72 4x4. Are there any concerns for the flow control valve on the power steering pump? Is more flow needed? If so, what is a good GPM? Company called KRC has different flow rates available from 1.18 GPM to 2.92 GPM.
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05-02-2021, 03:29 AM
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#2 |
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Senior Member
 Join Date: Dec 1999
Location: Southern California
Posts: 2,694
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Re: PS Flow Control Valve with Hydroboost
Believe 2.5 gpm would be about the minimum desired, no less less than 2 gpm. I will be running almost 5gpm at 1500-1600 psi with a ported hydroboost for my ram assist steering.
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 |
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05-02-2021, 03:08 PM
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#3 |
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All about them K’s
 
Join Date: Jun 2014
Location: Farmington, New Mexico
Posts: 6,229
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Re: PS Flow Control Valve with Hydroboost
I used the stock 49 year old ‘72 pump from my K20 when I did my Hydraboost swap. No issues. Stops right here right now compared to vacuum. Only thing I really ran into was in order to get it fully bled I had to add fluid while it was running to keep it from cavitating the pump and aerating the fluid.
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's ‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue ‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0 
Last edited by 57taskforce; 05-02-2021 at 03:16 PM. |
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