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Old 04-30-2009, 08:49 AM   #26
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Default Re: EHPS Redone

I should have been more pointed with my post. I'm specifically referring to djborden and his Factory Five. He left the impression that he's using regular AN line that is usually rated to about 300 psi.
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Old 05-08-2009, 06:33 PM   #27
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Default Re: EHPS Redone

Quote:
Originally Posted by 98SpecR View Post
Pump Pin-Out Wiring
See the attached schematics for more details.
Click here for P/S Schematic
Where go speed signal "B2" ? Should I connect it somewhere ?

Last edited by hondastreet; 05-14-2009 at 06:49 PM.
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Old 05-08-2009, 09:58 PM   #28
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Default Re: EHPS Redone

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Originally Posted by hondastreet View Post
Where go speed sigant "B2" ? Should I connect it somewhere ?
That's the pin for your speed signal, not "sigant". You could splice in your VSS on your transmission.
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Old 05-10-2009, 06:12 PM   #29
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Default Re: EHPS Redone

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Originally Posted by toyomatt84 View Post
That's the pin for your speed signal, not "sigant". You could splice in your VSS on your transmission.
Has anyone check the stock signal on the mr2? it might not use the same type of signal. I would think you would need an oscilloscope to check
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Old 05-10-2009, 08:17 PM   #30
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Originally Posted by Crx Jimmy View Post
I would think you would need an oscilloscope to check
Or the Toyota shop manual.
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Old 05-11-2009, 07:27 AM   #31
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Default Re: EHPS Redone

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Originally Posted by Crx Jimmy View Post
Has anyone check the stock signal on the mr2? it might not use the same type of signal. I would think you would need an oscilloscope to check
many cars from that era use the same type of vss signal. However you make a very valid point.
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Old 05-12-2009, 04:45 AM   #32
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Default Re: EHPS Redone

What type of oil did you used ?
Toyota Power Steering Pump ?

Honda Power steering should be great ? not?
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Old 05-12-2009, 06:04 AM   #33
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Default Re: EHPS Redone

Good question. I wasn't sure either at first so I used an aftermarket fluid that complied with both Honda and Toyota racks and everything works fine. However, I was thinking about trying Toyota power steering fluid specifically made for EHPS.
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Old 05-14-2009, 06:49 PM   #34
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Default Re: EHPS Redone

Quote:
Originally Posted by 98SpecR View Post

Pump Pin-Out Wiring

First, the link to see the schematic diagram, does not work correctly, or maybe it's my computer ?


Second, What about your 7.5 amps to the ignition ? (right corner of your picture)
Have you buy separatly a harness with fuse 7.5 integrated.

Sorry about my english, I'm gonna post alot pics of my set-up soon...

Last edited by hondastreet; 05-15-2009 at 06:42 AM.
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Old 05-18-2009, 10:52 AM   #35
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Default Re: EHPS Redone

My link installation :
http://k20a.org/forum/showthread.php?t=58599

Reference link - Aspiration :
https://honda-tech.com/forums/road-racing-autocross-time-attack-19/ehps-redone-2528249-post38032107/
http://k20a.org/forum/showthread.php?t=12251
http://www.evalbum.com/tech/mr2_powersteering.html
http://www.driveev.com/jeepev/convpgs/psteer.php

My car :


All details :
Pump => EHPS MR2 Spyder Toyota 2000 to 2005
250 $
eBay Motors - Autos, Used Cars, Motorcycles, Boats, Trucks, Parts, Accessories, RVs and Other Vehicles




Connection on steering (Integra 94-01)
M14-1.5mm



Connection on pump M16 par 1.5mm



High Pressure hose - 6 AN Each Extremity
Tank you to Karcepts Engineered Solutions - Home
80 $ US


Two Fitting
Russel Brand
RUS-670531 - Russell Fitting, Straight, AN Flare to Metric, Aluminum, -6 AN to 16mm x 1.5 Male - Qty=1
RUS-670521 - Russell Fitting, Straight, AN Flare to Metric, Aluminum, -6 AN to 14mm x 1.5 Male - Qty=1

You need a Bracket to hold in place the MR2 Pump
This bracket is good for all Civic 96-00 with a K20/k24
Pump Bracket

Laser cutting


Installation de la Pompe sur la braket



Paint job 10 $


Rad 65$
Summit Racing - High Performance Car and Truck Parts | 800-230-3030

Quote:
Originally Posted by Karcepts View Post
For the fluid return, you could opt to go with a stock setup, but the cost of the parts just for a mediocre return did not seem to be worth it. I opted to get some 3/8" I.D. hose and utilize a $40 oil cooler from Perma-Cool Industries. P/N: 1007

Rad. installation



Pump installation




Honda Accord 91-93, ABS modul


Diagram



From Honda-tech See my link aspiration
Quote:
Originally Posted by 98SpecR View Post
Electro-Hydraulic Power Steering (EHPS) Conversion
Pump Pin-Out Wiring
See the attached schematics for more details.
Click here for P/S Schematic


Fuse Box Pin-Out Wiring (91-93 Honda Accord ABS)
You won’t need the rest of the lower amp fuses.
Chick here for Fuse Box Schematic
MR2 Diagram:

Oil 6.50$ Cad (2 fois)


Resume - Pricing
Pump : 250$
Hose : 80 $
Fitting : 30 $
Radiateur : 65 $
Huile : 15 $
Bracket : Around 100$
Total : 540 $ and I win 8 HP! lol

Reference:
Karcepts Engineered Solutions - Home
Summit Racing - High Performance Car and Truck Parts | 800-230-3030
Russell Performance Plumbing - An Edelbrock Company
eBay Motors - Autos, Used Cars, Motorcycles, Boats, Trucks, Parts, Accessories, RVs and Other Vehicles
Honda | Acura Research, Reviews, Performance Parts, Owners - Honda-Tech.com
K20A.org .:. The K Series Source . Honda / Acura K20a k24a Engine Forum

Ready to race:

Last edited by hondastreet; 05-19-2009 at 06:19 AM.
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Old 05-19-2009, 03:23 PM   #36
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Default Re: EHPS Redone

great post, hondastreet!
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Old 05-29-2009, 11:27 PM   #37
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Default Re: EHPS Redone

I have both pumps sitting here now, with the 95 pump i was going to use the honda swirl pot that had 3 fittings on it since my 87 Integra rack has 2 return outlets, one that goes to the cooler and one straight to the swirl pot (reservoir). So now that I have the 05 MR pump I only have one inlet to the reservior, so i'm not sure how to route the 2 return lines. Any suggestions?
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Old 06-05-2009, 06:48 PM   #38
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Default Re: EHPS Redone

Do any of the people running these in Civics have issues beating the pump autocrossing? Thanks.
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Old 06-06-2009, 12:21 AM   #39
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Default Re: EHPS Redone

Awesome. Having the all-in-one computer with the pump is the key thing that makes this the way to go. Having an electric pump pumping full on isn't better than having a mechanical pump--having one that operates based on load is exactly what we need.
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Old 06-06-2009, 12:24 AM   #40
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Default Re: EHPS Redone

Personally I'd like to be able to put a potentiometer or something on the VSS input so that can manually adjust the amount of 'boost'.
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Old 07-24-2009, 06:47 PM   #41
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Default Re: EHPS Redone

Is the PS cooler needed or just something to add piece of mind? I'm planning on doing this soon to my VW.

BTW, Hondastreet, do you think you could make another bracket?
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Old 07-26-2009, 08:22 PM   #42
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Default Re: EHPS Redone

The cooler is definitely needed. You need to keep the fluid cool because the fluid is what cools the pump. So the fluid doesn't really need it, but the pump does! I've been running a pump with my ehps setup (using older style mr2 pump) for nearly 2yrs now.
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Old 10-21-2009, 09:38 AM   #43
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Default Re: EHPS Redone

amazing!!!..

this is going to be my next project for sure..
no p/s sucks
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Old 03-28-2010, 12:53 PM   #44
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Default Re: EHPS Redone

Is there a kit out there yet which covers this whole conversion?
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Old 03-28-2010, 04:26 PM   #45
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Default Re: EHPS Redone

Quote:
Originally Posted by KartelB View Post
Is there a kit out there yet which covers this whole conversion?
I wrote this write-up such that there would be no need for a "kit". However, I believe KarCepts and SpecialProjects both offer a kit for the older MR2 p/s pump.
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Old 07-30-2010, 07:44 PM   #46
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Default Re: EHPS Redone

Rotten,
I am putting this setup in my Cobra replica track car right now. I have found a guy that has engineered and produces a P/S pump controller (mentioned in post 18 of this thread) that can very the % of P/S assist based off a potentiometer or wheel speed (wheel spd mode is its default mode). It is just a circuit board, you have to find a project box to put it in (Radio Shack) and wire 12v ign, grd, VSS from ABS reluctor wheel and signal out to pin 2 of the MR2 pumps middle connector in the picture posted above.

In normal mode the circuit board has 11 speed tables (0-10). The controller provides 100% assist at table 0 and goes down from there. It also has a "wiper" mode the bases assist off of a user supplied potentiometer (Radio Shack again). He will also provide a detailed PDF that explains it operation. The beauty of the controller is that every table, and the speed step between tables is configurable by the user. I will try to post the PDF here.

In the PDF he lists a source for the connectors to the pump.

Olathe Toyota
685 N. Rawhide, Olathe, KS 66061
(866) 596-1970
[email protected],
http://www.olathetoyota.com

P6 connector Part # 90980-12068
P7 connector Part # 90980-10897
P8 connector Part # 90980-10942

Olathe Toyota also has pig tail wires with the pins and rubber weather proofing install that just slide into the connector for a factory looking install.

Additionally, just FYI he has tested the MR2 pump pressure while turning the wheel lock to lock. With the pump dead headed on the locks he only had 750 psi of hydraulic pressure.

If you are interested send me a PM.... Good luck Mac
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Old 06-19-2011, 06:03 AM   #47
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Default Re: EHPS Redone

Quote:
Originally Posted by djborden View Post
Guys, ran across this post after doing a google search.

I have recently completed a PS conversion using the toyota pump from a 2000-2005 MR2. I am not using the stock lines, just AN 6 lines. I was wondering if you guys knew if the pump lines have a restrictor in them?

When turning the wheel quickly, it feels as though the pump cant keep up. I wasnt sure if the pump is running out of volume or pressure, or if its the lack of a restrictor. Im using a mustang GT rack in a FFR GTM.



Does anyone have any specifics on the pump, such as pressure, and flow the pump is capable of?

BTW, I have a friend that has developed a controller that interfaces with this pump and which can take a signal off an ABS wheel sensor that is configurable to allow boost based on speed. The other option is the boost can be controled with a dial/pot... so you can dial in the boost with a simple dial. I can update you guys on the progress if you like.

I just installed the controller this weekend and it works great... I will be getting the controller that has the dial/pot option in a few days so can report on that as well.

David
Anyone know where to get this controller mentioned here?
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Old 06-20-2011, 10:42 AM   #48
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Yes just send me an email [email protected]***.net
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Old 10-10-2011, 09:53 PM   #49
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Default Re: EHPS Redone

rethought out what i wanted to say. let's try this again:

after tapping into the VSS what needs to happen in order to adjust the pressure? is there a way i can make the PS fade out after 35mph with some sort of adjustment/controller? can i adjust the ratio by running different resistors/fuses? i'm not the best when it comes to electrical **** so any help is appreciated. thanks!

Last edited by UrbanB; 10-10-2011 at 10:43 PM. Reason: i'm an idiot
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Old 12-02-2011, 09:24 PM   #50
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Default Re: EHPS Redone

Quote:
Originally Posted by mac vabch View Post
Yes just send me an email [email protected]***.net
Email sent Mac, im keen on a speed controller.

Thanks.
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