Electric power steering pump
01-15-2012, 09:44 AM
#1
Senior Member
Thread Starter
iTrader: (9)
Join Date: Oct 2006
Location: Lexington SC
Posts: 1,176
Total Cats: 35
Electric power steering pump
I am working with my brother to install an MRII electric power steering pump like these hondukie guys have done. http://honda-tech.com/showthread.php?t=2222562
I tried a search, but could not find anything on someone trying this on a track miata. I DD my car a lot and would love to have this option where I can prevent the PS pump from overspinning and boiling fluid on track. Not to mention that waisting the power to spin the pump could be used elsewhere.
I tried a search, but could not find anything on someone trying this on a track miata. I DD my car a lot and would love to have this option where I can prevent the PS pump from overspinning and boiling fluid on track. Not to mention that waisting the power to spin the pump could be used elsewhere.
Reply
0
0
01-15-2012, 09:51 AM
#2
Junior Member
Join Date: Jun 2005
Posts: 286
Total Cats: 235
we have a couple of miatas here running those.. check out inglars build thread for some info, and www.mazdaspeedy.com
Reply
0
0
01-15-2012, 03:16 PM
#9
Newb
Join Date: Jan 2007
Posts: 9
Total Cats: 0
I'm running the 2nd gen MR2 electric pump on my autocross NA. Works great for my purposes. I mounted it in the trunk for weight distribution reasons. I run it at full battery voltage all of the time (in the MR2, it's speed is controlled by varying the voltage and it never gets full power). I used a generic aluminum fluid tank mounted next to the pump and made my own braided lines.
Jim
Jim
Reply
0
0
01-15-2012, 03:20 PM
#10
Senior Member
Thread Starter
iTrader: (9)
Join Date: Oct 2006
Location: Lexington SC
Posts: 1,176
Total Cats: 35
I have alll the parts to depower and even the idler to keep my AC working. I have driven several PS miatas and have to say that they all felt different. My 91 has the perfect balance and feels perfectly flickable and still gives awesome feedback, where my wife's 97 feels numb in comparison.
My daily drive is around 1 hr one way, so PS helps. I only do 2-3 track days a year at max.
I am still debating on depowering the rack temporarily and drive for a few weeks with just looped lines and see how it feels.
My daily drive is around 1 hr one way, so PS helps. I only do 2-3 track days a year at max.
I am still debating on depowering the rack temporarily and drive for a few weeks with just looped lines and see how it feels.
Reply
0
0
01-15-2012, 03:55 PM
#11
If you drive the car with the lines only looped, you will be doing an injustice to yourself and your car. With the lines looped, you have to move not only the car, but the fluid as well. While you might think it doesn't make much of a difference, trust me, its worlds apart.
I'll have to dig up my records, but my friends and I did a back to back test this summer recording effort to turn the wheel, same car, same day, same rack, just powered, depowered, and looped. Keep in mind that I have 215-45-16 kuhmo xs on my car, so the values will be slighlty higher
If my memory is correct, with the ps, it took 2.7x lb of pressure to turn the steering wheel, both at rest and while moving.
with the lines looped, it took almost 30 lb to turn the wheels at rest, and 9.2x lb while moving.
With the depower, it takes 5.4x lb at rest, and 5.0x while moving.
We did compare a friend of mine with a manual rack, and some shitt-ay all seasons, and ended up with 8.5x lbs for both.
What the test doesn't tell you is the amount of feedback you get from depowering. If my wife can hop out of the car after one drive, and tell me to do it to all of our cars, then I'm sure you will love it too.lol
I'll have to dig up my records, but my friends and I did a back to back test this summer recording effort to turn the wheel, same car, same day, same rack, just powered, depowered, and looped. Keep in mind that I have 215-45-16 kuhmo xs on my car, so the values will be slighlty higher
If my memory is correct, with the ps, it took 2.7x lb of pressure to turn the steering wheel, both at rest and while moving.
with the lines looped, it took almost 30 lb to turn the wheels at rest, and 9.2x lb while moving.
With the depower, it takes 5.4x lb at rest, and 5.0x while moving.
We did compare a friend of mine with a manual rack, and some shitt-ay all seasons, and ended up with 8.5x lbs for both.
What the test doesn't tell you is the amount of feedback you get from depowering. If my wife can hop out of the car after one drive, and tell me to do it to all of our cars, then I'm sure you will love it too.lol
Reply
0
0
01-15-2012, 03:58 PM
#12
I autocrossed my car with ps for years, and never thought that I would give it up, but after doing it, ill never go back.
And as far as dd it, my wife dailys hers with a depowered rack all summer, one hour each way, down back roads. Never complained about it, only complains if se has to drive the company accord, because of its power steering.
And as far as dd it, my wife dailys hers with a depowered rack all summer, one hour each way, down back roads. Never complained about it, only complains if se has to drive the company accord, because of its power steering.
Reply
0
0
01-15-2012, 04:47 PM
#15
Elite Member
iTrader: (1)
Join Date: May 2009
Location: Jacksonville, FL
Posts: 5,155
Total Cats: 406
What is really bizarre yo me is that someone did this to a Honda.
A powerful Honda with PS is borderline horrifying.
Ditching the PS at least gives you a chance to deal with the torque steer, with it you have no chance.
A powerful Honda with PS is borderline horrifying.
Ditching the PS at least gives you a chance to deal with the torque steer, with it you have no chance.
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
