SIMPLESOUND

I have a donor GSLSE with power steering.I would like to install the power steering set up into the GSLSE that I am driving now.Has anyone done this before?What all will I have to strip off from the donor car?Thanks

Rx-7Doctor

iTrader: (13)

That's a simple one. All of the P/S parts from the donor car need to be transfeered to your driver. Yes it's that simple.:-)

SIMPLESOUND

What about front end stuff?Like from the steering linkages or idler arm?I have the factory manual to eyeball too.Steering column also?

Rx-7Doctor

iTrader: (13)

The steering linkage, etc is the same. You will have to use the gear box of course.

85 FB

Why are you wanting to stick in P/S from one GSL-SE to another? GSL-SEs came with P/S.

And, yes, as The Doc said, it's easy. Think about it, both are the exact same car. Now, if you were wanting to remove the P/S from a Nissan 240SX and put it into a GSL-SE, then it would be something else.

Rx-7Doctor

iTrader: (13)

85FB, not all SE's came with P/S. I had been under the impression that they did also.
There are quite a few that did not however.

85 FB

Wow, I didn't know that. I figured that since they were the "top of the line" models, what with leather seats, power everything, rear window defroster, rear wiper, etc etc (like mine), that all of them were like that.

Well, I learn something new everyday.

j9fd3s

iTrader: (3)

ive only had 2 gsl-se's with ps, the other 6 or so were manual...

doc is right, you just swap steering boxes/pump/lines/ac bracket, not really hard, but its kinda big and ugly

oh yes, and theres a little control box under the dash too, maybe 4"x4" silver thing

Rx-7Doctor

iTrader: (13)

The control unit is for the speed sensitive steering. It is supposed to boost pressure for easier steering when pulling into a parking spot. It may control other variables also, I have not really researched it.

85FB, the Se's also did not all come with leather.

85 FB

The control box also turns the P/S off at 55mph. This I was told by my rotary tech guy.

Rx-7Doctor

iTrader: (13)

I did not know that. I'm wondering how though? Since it is a hydraulic system and there is a pressure switch that is tied to the P/S ECU it must somehow regulate the flow of the fluid? I would be curious how it actually does shut it off.

85 FB

To be honest, the tech never went into specifics. I was surprised as well because I've never heard of that before. Unfortunately, they've moved out into WVA and it's tricky to get them on the phone. Ever. But, that is what he's told me and he's worked on those things for 5 years (his boss has worked on them for like 20 I believe).

I just figured that the switch in side of it somehow disengages the gear or something inside the pump.

Rx-7Doctor

iTrader: (13)

Well the only thing it can do to the pump since it is hydraulic is maybe shut off the pressure side and allow the fluid in the gear box to just recirculate to prevent damage to the box. I am going to investigate this because I have never heard of this nor seen it in any tech manuals.

SIMPLESOUND

[QUOTE=rx7doctor;7430233]Well the only thing it can do to the pump since it is hydraulic is maybe shut off the pressure side and allow the fluid in the gear box to just recirculate to prevent damage to the box. I am going to investigate this because I have never heard of this nor seen it in any tech manuals.[/QUOTE

I also heard that somehow at high speeds the power steering unit becomes stiffer in order for the car to still have road feel.Now whether or not this has to do with this box or not is another thing.

85 FB

Being stiffer means the P/S is not active. P/S makes stiff steering easier to move. I know, because when I had my old P/S pump on, it leaked like a sifter. So, I just let it be empty (fluid spray onto my engine and spark plugs). That was some slight tough steering to mess with. New pump, easy steering.

So, what you just said coincides with the statement that the P/S unit disengages at 55mph.

jonathan_ed3

iTrader: (1)

I've heard the same thing about the steering; specifically in the 2G cars though.

I had an '88 some time ago, and could definitely feel a difference at highway speeds...and after I got rid of it I heard some mechanics talking about some kind of variable power steering system that RX7's had.

Don't know if it's all mind games though?

OLD RX-7

I covered the switch here = https://www.rx7club.com/1st-generation-specific-1979-1985-18/power-steering-issue-645925/