IncorpoRatedX
(I'm an idiot...)
02/10/07 06:32 PM
2G power steering set up on your GVR4

I've got a lot of 2g stuff laying around so tonight i decided to toss the 2g power steering pump etc on the car. I guess just for the sake of looking newer and to be a little different? I'm a ricer, i know.

so far i have, 2g exhaust manifold, o2 housing, 2g trans, 2g slave cylinder, 2g injector clips and now 2g power steering pump. lol.





**DONOTDELETE**
(Unregistered)
02/11/07 09:01 AM
Re: 2G power steering set up on your GVR4

Well, its all aluminum so it should be lighter.

gtluke
(Fegbasket)
02/11/07 11:50 AM
Re: 2G power steering set up on your GVR4

do 2g's have that steering cut bullshit too?

IncorpoRatedX
(I'm an idiot...)
02/11/07 06:58 PM
Re: 2G power steering set up on your GVR4

yeah, hence the sensor on the top of pump.

gtluke
(Fegbasket)
02/11/07 07:00 PM
Re: 2G power steering set up on your GVR4

the sensor see's pressure and raises your idle.
the cutout is mechanical


IncorpoRatedX
(I'm an idiot...)
02/11/07 08:32 PM
Re: 2G power steering set up on your GVR4

interesting info

**DONOTDELETE**
(Unregistered)
02/11/07 10:07 PM
Re: 2G power steering set up on your GVR4

Quote:

do 2g's have that steering cut bullshit too?



steering cut?


IncorpoRatedX
(I'm an idiot...)
02/11/07 11:10 PM
Re: 2G power steering set up on your GVR4

where as it reduces the effect of the power steering pump itself as speed either speed or RPM's is increased, i cant remember which it is but it's supposed to make the wheel feel heavier at higher speeds making the car feel more stable and at lower speeds allow the wheel to turn freely for easy parking lot manuevering

kartorium
(hillbilly racer)
02/11/07 11:26 PM
Re: 2G power steering set up on your GVR4

luke is speaking of the horrible PS cutout that occurs in racing situations mostly, where the pump cuts out causing extremely stiff steering for a second. I forgot what the cause was, but someone else could probably explain.

IncorpoRatedX
(I'm an idiot...)
02/11/07 11:56 PM
Re: 2G power steering set up on your GVR4

found on the talon digest about a guys 95 DSM:

Quote:

The PS pump contains a flow control valve which restricts pressure at high
RPM. It can be found by removing the hose connector at the top of the pump.
As the flow increases the valve closes and restricts pressure. The valve
is kept open by a spring. I simply inserted small washers until the spring
is fully compressed so the valve will never close.

I have been running my car for over a year now with no ill effects.





looks like i'll be cramming some washers in it tommorow
Wonder why i couldnt just simply remove the spring.. hmm


gtluke
(Fegbasket)
02/12/07 09:21 AM
Re: 2G power steering set up on your GVR4

the p/s cut is a huge pain in the ass in an autocross or in the snow when you are revving the engine and trying to turn.
i guess i'll just shove washers in mine too.
i like the aluminum pump though, i'll keep my eyes open for one.

i wonder if the 2g alternator is just as big of a piece of crap as the 1g one?


IncorpoRatedX
(I'm an idiot...)
02/12/07 09:49 AM
Re: 2G power steering set up on your GVR4

Yup, alternator is just as big a POS as it is on the 1g's

if you need a 2g PS pump i've got another entire assembly. lol. Pump, both pulley's, bracket. The only thing wrong with it is that sensor has the pin broke off it.


**DONOTDELETE**
(Unregistered)
02/12/07 10:12 AM
Re: 2G power steering set up on your GVR4

Quote:

luke is speaking of the horrible PS cutout that occurs in racing situations mostly, where the pump cuts out causing extremely stiff steering for a second.




I've experienced that at high RPM heading into a corner and it feels like the steering wheel is set in concrete. This occurs in both 1G and 2G and the spools are different, but the fix is the same. Pull out the spool valve and insert a ring about 1/8 inch long cut off some hard tubing you have sitting around. After doing this the problem never came back. I found the info by Googling "RPM power steering cut out" or something like that.
Mike R.


IncorpoRatedX
(I'm an idiot...)
02/12/07 10:36 AM
Re: 2G power steering set up on your GVR4

did this require tearing the pump apart?

gtluke
(Fegbasket)
02/12/07 11:09 AM
Re: 2G power steering set up on your GVR4

nah, you can do it on the car. just take the nut, then the stud out of the top.
i've actually read into this already, just haven't done it yet.
plus my p/s pump is every so slightly weeping fluid.


iceman69510
(Turn Right Racing)
02/12/07 11:14 AM
Re: 2G power steering set up on your GVR4

Quote:

Pump, both pulley's, bracket.




So detail this for us. What parts did you have to change? Bracket? Pulleys because it uses ribbed belt not a V-belt?


**DONOTDELETE**
(Unregistered)
02/12/07 12:13 PM
Re: 2G power steering set up on your GVR4

Quote:

did this require tearing the pump apart?



Quote:

nah, you can do it on the car. just take the nut, then the stud out of the top.





I would think you could do it in the car. Since I wasn't sure how to dimension the ring and didn't want a lot of downtime while I screwed around with it I bought a used pump for $15 fixed the cutout on that one then swapped it in.
Mike R.


IncorpoRatedX
(I'm an idiot...)
02/12/07 07:59 PM
Re: 2G power steering set up on your GVR4

Quote:

Quote:

Pump, both pulley's, bracket.




So detail this for us. What parts did you have to change? Bracket? Pulleys because it uses ribbed belt not a V-belt?






need:
-2g inner water pump pulley to drive the power steering pump
-2g PS pump
-2g PS pump bracket
-2g belt .5 inches shorter than stock. I believe it's a 27in belt.


OMFGeofffff
(All I want is a dodgy)
02/12/07 08:33 PM
Re: 2G power steering set up on your GVR4

Quote:

the p/s cut is a huge pain in the ass in an autocross or in the snow when you are revving the engine and trying to turn.







boostx
(On The Wrong Side. )
02/13/07 04:46 AM
Re: 2G power steering set up on your GVR4

i wonder how much power gain will the the 2g one makes due to the fact its a rib belt ( v belt robs power )
its free hp


gtluke
(Fegbasket)
02/13/07 07:26 AM
Re: 2G power steering set up on your GVR4

Quote:

Quote:

the p/s cut is a huge pain in the ass in an autocross or in the snow when you are revving the engine and trying to turn.






What happens if you were trying to turn while revving high then your power steering went out. Fried pump?




no, the mitsu design bypasses the pump at high rpm. it pretty much turns the pump off when it nears redline.
its not bad for the pump, just makes it hard to drive.


curtis
(Space Blanket from NASA plumbed into the attic)
02/14/07 04:55 PM
Re: 2G power steering set up on your GVR4

Damn you guys I can't get a break.... something else to address for me to mod. I do have a serpentine 2.5 subaru one in the garage that has a tank on top.

**DONOTDELETE**
(Unregistered)
02/14/07 05:07 PM
Re: 2G power steering set up on your GVR4

Quote:

i wonder how much power gain will the the 2g one makes due to the fact its a rib belt ( v belt robs power )
its free hp


Yes, but since the you need a different size belt and different pulleys you forgot to take pulley size into account. Now the pump maybe under-driven or over-driven, so he actually maybe losing HP, or gaining more HP than you'd expect.

IncorpoRatedX
(I'm an idiot...)
02/14/07 07:46 PM
Re: 2G power steering set up on your GVR4

i'll check the pulley size tomorrow you OCD freaks.

mountaineerjeff
(<3 NJ)
02/02/09 02:42 PM
Re: 2G power steering set up on your GVR4

what if used in conjuction with a 2g underdrive pulley? definent gain then.

JSchleim18
(Minor 69er)
11/30/09 02:07 PM
Re: 2G power steering set up on your GVR4

How to: click

Dialcaliper
(Flagration Member)
12/01/09 09:25 PM
Re: 2G power steering set up on your GVR4

The 2G pump is basically identical internally to the older version. The flow control valve is actually a 3-stage setup. It has two ranges where it decreases flow (sharply between 700-1000 to compensate for weak pump flow at low RPM and at a slower rate at 1000-3000). And the final stage above 3000 RPM where the assist is limited to a fixed size flow channel. You don't want to completely remove the spring - You'll end up with way too much power assist at freeway speeds (resulting in mushy steering feel). The result is a pretty linear pressure vs flow slope up to about 5500 RPM. The problem is that above that, flow drops off rapidly when the relief valve opens to prevent the pump from exploding.

The best result will probably be had by shimming the plunger to somewhere in the middle to end of the 1000-3000 range if you still want to retain some steering feel.

More info Here, page 19-11 if you're interested.


belize1334
(well bread and nobly conceived)
12/23/09 06:21 PM
Re: 2G power steering set up on your GVR4

This guy on Autocross.dsm.org seems to think that only 1G's had this issue. So, if the pumps are basically identical, then maybe there's something else that's different. Could it be that the 2G uses a bigger pully on the pump (or smaller pulley on the crank) so that it's not spinning so fast at 7k rpms? Even if that isn't the default case, maybe somebody could build/install an oversized pump pulley so that the pump is only spinning 80% as fast as in OE configuration. That'd make the cutout not happen until nearly 9k rpm which is higher than most autocross engine go.

GreenGSX
(One Member)
12/24/09 08:14 AM
Re: 2G power steering set up on your GVR4

All you have to do is get your hands on a 1G NT power steering pump (mistu engine). I've had one on both my 1G track car and the One Lap VR4 and I don't have a hint of power steering cut-out even when autocrossing. Its a really old-school autocross mod I picked up from Mike at DSS.

**DONOTDELETE**
(Unregistered)
12/24/09 10:23 AM
Re: 2G power steering set up on your GVR4

^Yeah it has been on the vfaq for 11 years or so.

JSchleim18
(Minor 69er)
02/08/10 03:19 PM
Re: 2G power steering set up on your GVR4

Quoting GreenGSX:

All you have to do is get your hands on a 1G NT power steering pump (mistu engine). I've had one on both my 1G track car and the One Lap VR4 and I don't have a hint of power steering cut-out even when autocrossing. Its a really old-school autocross mod I picked up from Mike at DSS.




When you say a NT power steering pump, do you mean 2.0 or 1.8 or it doesn't matter?

VFAQ lists that the cutout is on both Turbo and Non-turbo 2.0 but says nothing about the 1.8?



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