MR2 SW20 RHD Power Steering Quick Steer Pinion.

Marty J · Posted: Thu Feb 21, 2013 5:25 pm Post subject:

And how much money are you going to put up for legal action ?

You are right in saying that this has gone on way too long. Something I certainly did not foresee, but to start threatening them with legal action at this stage would not do us any favours as far as I can see.

I don't want to name the company because certain people could go overboard with abuse and I don't want to go down that road.

dantheman · Posted: Fri Feb 22, 2013 2:46 pm Post subject:

Mine just arrived. I have to say mine looks like its been machined much better than wingers one.

2 things stand out i'd like to query:

-My old one features an indented ring round the top part of the helical and the new one does not. Is this ok?
-The old one has a short chamfer on the first edge below the helical, the new one is longer. Is that ok?

I might install this next week hopefull so I can give feedback.

Just ordered parts aswell as listed in the fitting guide. came to ?45.17

Wingers · Posted: Fri Feb 22, 2013 5:29 pm Post subject:

It looks like the helical gears are also much shorter now.

Wingers

rev3turbo · Posted: Fri Feb 22, 2013 6:01 pm Post subject:

Marty J · Posted: Fri Feb 22, 2013 8:05 pm Post subject:

dantheman have you tried to install the pinion into the rack ? When I received the soft sample it fitted perfectly into my rev 2 rack.

dantheman · Posted: Fri Feb 22, 2013 8:15 pm Post subject:

Marty J · Posted: Fri Feb 22, 2013 11:14 pm Post subject:

dantheman I cannot honestly answer why they are different. I can ask on Monday.

When you sent me your pinion, I installed it into my own rack and it work as should. Providing the manufacturer has not altered anything significant to the new pinion part, then it should work the same as the soft sample that I tried out.

Rosssco · Posted: Tue Feb 26, 2013 9:53 am Post subject:

I have recieved a pinion today. I'll get the verniers out tonight and look to take some dimensional measurements for comparision.

I did note that the accompanying documentation noted the part as 'sample'. This may just be an oversight, but worth confirming that these are the finished components (presume they are)

ziggyzigatron · Posted: Tue Feb 26, 2013 5:39 pm Post subject:

If its any consolation mine looks pretty ruff with machine marks in it.
Im waiting for the conformation that this is right as I dont have the facilitys to do the work my self and I have to pay someone to do it.
Even now I have the part, it just sits on the kitchen side board anoying my wife.....
The saga continues

dantheman · Posted: Tue Feb 26, 2013 9:24 pm Post subject:

I installed the pinion today following that guide. Took about 4 hours to do.

2 observations:

1)The steering is noticably more responsive. Lock to lock before was 3.5 turns, now its 2.66.

2)My power steering is terrible now. It seems to offer assistance about 0.5s after I turn the wheel a significant amount. So i turn the amount I want to, then it kicks in and tries to make me turn more into the corner. The steering wheel also turns by itself when the car is stationary and doesnt return to centre after a corner. Im gonna search for the cause and if I cant find one hopefully pulling a fuse and disabling power steering will solve it. Any ideas what it might be?

Marty J · Posted: Tue Feb 26, 2013 11:22 pm Post subject:

Rosssco · Posted: Wed Feb 27, 2013 9:53 am Post subject:

Wingers · Posted: Wed Feb 27, 2013 7:48 pm Post subject:

Again, I'm not aware of exactly how this system works but it sounds like the feedback loop isn't working properly. If it's moving on it's own then it must not know when to assist and when to do nothing.
That sounds like the centre point isn't set properly and I don't think it's anything to do with the new pinion.

Not that that helps much I guess...

Wingers

dantheman · Posted: Wed Feb 27, 2013 9:10 pm Post subject:

Ive done some research and I suspect issues with my installation over the pinion as the cause

1)I didnt use toyota fluid (mainly cos I didnt realise you had to until I opened the reservior, by which point it was too late) I used halfords power steering fluid instead. There are 3 schools of thought on this issue: That it makes no difference, that you can use peugeot 307 fluid at a quarter of the price, or use toyota fluid (?30+ a bottle). I dont suspect this is the cause.

2)The rack guide also sets preload. I did not realise this when I reinstalled and just did it up 'a suitably tight amount'. I suspect the reason for the delay is this preload. Unfortunately to adjust this I gotta remove the rack again.

3)I slightly overfilled the reservior as I was expecting 0.5L of fluid and it only took 0.3L

4)when i went lock to lock I did not leave it at full lock for 2-3 seconds as recommended in the manual, so it might not be bled fully.

I will address these 4 issues on friday and see what the deal is. Only then can I accuse the pinion.

Marty J · Posted: Thu Feb 28, 2013 1:32 am Post subject:

I do remember a debate on MR2.com a few years ago about the use of other branded power steering fluids in the MR2. I think they came to the conclusion that the other fluids would allow the power steering to work, but they also slowly dissolved the seals/washers in the rack.

For those who want to use the Toyota power steering fluid brand, the part number is 08886-01206.

dantheman · Posted: Fri Mar 01, 2013 9:36 pm Post subject:

Ive slackened the preload, given it the correct amount of fluid and bled it properly. Still not working right and seems to disable itself after a while. Though ive only driven about 10 mins in the car since changing the pinion over.

That only leaves 2 options, either it requires the correct fluid or i did something to the valve when i swapped the pinions.

aussieGT · Posted: Sat Mar 02, 2013 4:22 pm Post subject:

ziggyzigatron · Posted: Sun Mar 03, 2013 9:11 am Post subject:

I didnt think the rack had enough sensors to to do that.
My understanding was that the amount of assist was speed related and the pump got a signal from the speedo wire that goes to the ecu.

dantheman · Posted: Sun Mar 03, 2013 9:07 pm Post subject:

When i looked at the manual i dont think the system is 'smart' at all. When you turn the wheel, the movement of fluid causes it to open a valve which allowes the high pressure pumped fluid to flow to equalise the pressure difference, creating an assistance in the process...(or something).

Did a trackday today, just disabled the power steering. The steering was very direct, gave great feedback and actually wasnt too heavy, so its gonna stay disabled.

Overall im very happy with the mod now.