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post #1 of (permalink) Old 09-06-2003, 08:49 PM Thread Starter
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Power steering pump High Flow Modification

I've been hearing about this from a few guys out there.

They say a steering pump can be modified where the output (pressure side) exits the pump in a way that will produce more pressure. They (I'm intentionally not naming names) say that there is a write up on the internet but I can't find it. .....anyone seen it?
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post #2 of (permalink) Old 09-06-2003, 09:01 PM Thread Starter
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Re: Power steering pump High Flow Modification

This is how to do a Toyota Box
web page
I know there is more than this.
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post #3 of (permalink) Old 09-06-2003, 09:07 PM Thread Starter
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Re: Power steering pump High Flow Modification

Heres another, has anyone actualy done this?
web page
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post #4 of (permalink) Old 09-06-2003, 11:08 PM
 
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Re: Power steering pump High Flow Modification


Why do you need more pressure?
In most cases it is not neccessary to increase the pump's output pressure, it will only create problems. I've been doing this in different ways for years and it does not reliably improve the stock steering system. I've seen pumps crack in half by slightly increasing the pressure. When this happens, the power steering is instantly lost. So your hauling a$$ down a windy road and you crack the pump,,,,,,,

If you increase pumps Volume flow(by drilling the hole larger) for the use of a ram, then the pressure will drop from it's stock level. Then increasing the pressure back to stock would be OK but not more then back to the stock pressure, these pumps are not designed for high pressure. If you really want a High Pressure pump, then swap out the stock unit but the saginaw pump produces more then enough pressure in stock form then you should need.

I don't know your ability so please don't take offense but make sure you know everything about your steerig system before you try to modify it in any way. It not one of those things like "if a little is good , so more is better".

Right now I use a stock chevy saginaw pump with the volume very slightly increased but NO increase in pressure, This runs a ram assist steering and hydroboost brakes with a inline cooler .
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post #5 of (permalink) Old 09-06-2003, 11:13 PM
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Re: Power steering pump High Flow Modification

Aaron come on......how many times do I have to tell you. [img]images/graemlins/tongue.gif[/img]

73-87 Chevy one ton (depends on if you want flair or o-ring fitting, and even that can be changed) with hydro-boost brakes. As long as you have a saginaw pump it will fit your housing. Thats the pump you want. I would say buy it from a "good" place as Ricky told me the "generic" parts houses have all the pumps listed as the same number.
Have I used one? Yes, I still do. Does it make a difference? Heck yes. One finger turning. I run 35's but Onetonjeeper has 38's and has worked great for him locked too. I will add...............run a cooler in the return line. It will help it live. [img]images/graemlins/smile.gif[/img]
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post #6 of (permalink) Old 09-07-2003, 12:07 AM Thread Starter
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Re: Power steering pump High Flow Modification

</font><blockquote><font class="small">In reply to:</font><hr />
Why do you need more pressure?

[/ QUOTE ]
um...well....I'm having a hard time steering w/ hubs unlocked, engine idling, sitting still on pavment. The wheel kinda jerks as the pump tries to catch up..... Then, lock one or two hubs put it in 4 low and see how it works w/ a welded front.

I have a cooler installed now.

</font><blockquote><font class="small">In reply to:</font><hr />
I've been doing this in different ways for years

[/ QUOTE ]

Tell us more, how/what did/do you modify? What were the outcomes? Did every pump w/ increased pressure break? Did any boxes/seals break? Were any successful w/ pressure increase?
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post #7 of (permalink) Old 09-07-2003, 12:32 AM
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Re: Power steering pump High Flow Modification

This guy does them all the time. Here are the instructions:
http://westtexasoffroad.homestead.co...rsteering.html

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post #8 of (permalink) Old 09-07-2003, 12:36 AM Thread Starter
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Re: Power steering pump High Flow Modification

I posted the blue version of that page in a post above. [img]images/graemlins/grin.gif[/img] [img]images/graemlins/grin.gif[/img] [img]images/graemlins/grin.gif[/img]
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post #9 of (permalink) Old 09-07-2003, 12:51 AM
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Re: Power steering pump High Flow Modification

I guess I should have followed the link. I didn't recognize the URL and I didn't realize that info was on another site. I have wheeled with Matt Hodges a couple of times and seen his Redneck Ram in action. I would trust the info he provides.

Later,
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post #10 of (permalink) Old 09-07-2003, 01:31 AM
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Re: Power steering pump High Flow Modification

This what I did when I replaced the pump earlier this year. Not boosting the flow, but raising the pressure before the pump starts bypassing...

Jims Weeds "PS Pump Boost" (told you it was out there [img]images/graemlins/tongue.gif[/img] )
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