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post #1 of (permalink) Old 02-23-2005, 04:37 PM Thread Starter
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Looking for electric power steering pump

I have heard that older Subaru cars used an electric power steering pump. I am in need of one to run my rear steer. I found one new for around $135.00 + $25 core. I have also been told that they can be found for about $40 new. Does anyone know a part # or vehicle application for one of these cheaper ones?
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post #2 of (permalink) Old 02-23-2005, 08:20 PM
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Re: Looking for electric power steering pump

Sorry to add questions to your question....

Is there and electric pump that will provide the volume/pressure that you will need?

The only electric steering pumps in production are integral to the steering gear aren't they?

The rockcrawlers with rear steer run both ends off of one beefy pump?

Try these guys, they can tell you.

<u>Howe Performance</u>

[img]images/graemlins/40BEER.gif[/img]
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post #3 of (permalink) Old 02-23-2005, 09:35 PM Thread Starter
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Re: Looking for electric power steering pump

Dale,
I have to give you credit. You are the master of the search.

[ QUOTE ]
The rockcrawlers with rear steer run both ends off of one beefy pump?


[/ QUOTE ]

What I have found is a mix of a lot of different things.
The comp guys are all running aftermarket "high dollar" equipment. One pump, power beyond orbital valve feeding joystick to rear.

Once you get into the trail type guys, there is all kinds of crap going on. Most of the cheaper systems run the stock pump for the front steering (1200 to 1800 psi and 3 to 4 gpm - before doing the "pressure and volume mod").
A 4.5 to 5.7 gpm Charlynn open center non-reactive orbital valve. And a 2" bore 6" to 12" stroke, double acting, non-ballanced (single ended) ram.
The rear steer is usually independent unless they are spending the $1200 to $1400. They use everything from electric toggled "plow" or "boat trim" rams to secondary belt driven pumps to electric pumps. I find more stuff everyday I look.

I want a hydro, variable flow, joystick. And the cheapest way to do it is with an electric pump.


[ QUOTE ]
The only electric steering pumps in production are integral to the steering gear aren't they?


[/ QUOTE ]


Man, I'm 99% sure that is incorrect, but I can't prove it. I think what I'm seeing for $135 is not in any way integrated to the steering gear. I know a guy that tried to use one for a hydralic winch but when he got a lot of tension on the cable the fluid would go through the relief valve and back to the resivoir.
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post #4 of (permalink) Old 02-23-2005, 09:40 PM
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Re: Looking for electric power steering pump

Didn't the guy that converted the XJ to DC electric use a 12V PS pump?
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post #5 of (permalink) Old 02-23-2005, 09:50 PM Thread Starter
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Re: Looking for electric power steering pump

Whats that Dave? I'm not following.
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post #6 of (permalink) Old 02-23-2005, 10:17 PM Thread Starter
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Re: Looking for electric power steering pump

Here
are a bunch of pumps. Electric and electric hydralic. I think there is one that fits a stock Subrau that is about 1/4 the price of these and a stocked item at the parts store. I just can't find it.
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post #7 of (permalink) Old 02-23-2005, 10:35 PM
 
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Re: Looking for electric power steering pump

i do belive its the newer subuarus and i think some of the newer hondas are using an electric powersteering pump.
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post #8 of (permalink) Old 02-24-2005, 07:12 AM
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Re: Looking for electric power steering pump

Is it likely that a pump for a Sub or Honda will have enough guts to do the job?

And since we're talking about steering the back axel, I would think that the job could be done much more simply by an electric actuator. They generate equal force and speed in both directions, can be powered by a single wire, can be controlled with very simple wiring, and can be built as strong as you want. Why convert electrical energy to mechanical to hydraulic and back to mechanical? Anybody ever try that?
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post #9 of (permalink) Old 02-24-2005, 07:55 AM Thread Starter
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Re: Looking for electric power steering pump

Jim, I don't understand exactly how that works. This is all electric and no hydro fluid at all? Where can I find the parts?

Will it still be variable flow? Thats why I don't want the electric plow type ram. I want to be able to finess the steering slowly if I only push the valve open a little bit, as oppose to fully opening it and having faster steering.
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post #10 of (permalink) Old 02-24-2005, 08:13 AM
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Re: Looking for electric power steering pump

An electric actuator is is called linear due to the fact that itwill move in a line when power is applied. It can be powered out and in and could be strong enough to steer an axle.
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