steering rack improvements

Suspension and other discussion

Re: steering rack improvements

Postby underscore » Wed Oct 24, 2012 8:46 pm

it's useful for everything except drag racing?
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Re: steering rack improvements

Postby klue » Wed Oct 24, 2012 8:55 pm

less turns to lock, or faster ratio means less input from the driver needed to get the car doing what you want it to... turn. On the street its probably the opposite of what you want. But on the track its EXACTLY what you need!
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Re: steering rack improvements

Postby rio_cyber » Thu Oct 25, 2012 5:14 pm

afaik mr2 racks comes in servo and not servo types.

btw very ineteresting info regardin a ae92 rack.... :D
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Re: steering rack improvements

Postby urbandork » Sat Oct 27, 2012 4:22 pm

urbandork wrote:ok so this thread has interested me and this is what ive found.

ae92's have the same power steering rack except for the gts and apparently the gtz. the gts has a variable ratio steering rack that runs off a vac line and the gtz (rhd) seems to have a better lock to lock ratio. info can be found to TN here.

Quote:
Originally Posted by Blof-fan
Well so far, I think most of the AE92 steering racks are acounted for:
AE92 SR5 manual rack: not posted yet
AE92 GT-S manual rack: 4 turns lock-to-lock
AE92 SR5 P/S rack: 3.4 turns lock-to-lock
AE92 GT-S P/S rack: 3,25 turns lock-to-lock
AE92 GT-Z P/S rack: 2.5 turns lock-to-lock
Might be nice to save this topic for future reference?

http://www.toyotanation.com/forum/134-6 ... racks.html

so whats up with all of this 1.6 lock to lock stuff? if its out there id like to try it out but from what ive found it doesnt look like the ae92's had a 1.6 lock to lock steering rack :( .... ill do some research on the ae11X's later


ive still been looking around have and have yet to find a forum or article saying the ae92's had a 1.6 lock to lock steering rack... perhaps it was a rare rack? or maybe who ever said it was 1.6 was only talking about from center to full left or right thus 3.2 lock to lock.
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Re: steering rack improvements

Postby phattyduck » Mon Oct 29, 2012 5:41 pm

urbandork wrote:ive still been looking around have and have yet to find a forum or article saying the ae92's had a 1.6 lock to lock steering rack... perhaps it was a rare rack? or maybe who ever said it was 1.6 was only talking about from center to full left or right thus 3.2 lock to lock.
That was my assumption. Sadly, a 1.6 turn to lock (or 3.2 lock to lock) doesn't mean much... My Alltrac Camry is already there.

The 2.5 lock-to-lock variable ratio rack might be interesting. The question is whether it is variable steering ratio (slower at the center, faster at the ends?) or just variable assist (it has a vacuum line going to it...) depending on engine load.

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Re: steering rack improvements

Postby urbandork » Wed Oct 31, 2012 5:09 pm

phattyduck wrote:
urbandork wrote:ive still been looking around have and have yet to find a forum or article saying the ae92's had a 1.6 lock to lock steering rack... perhaps it was a rare rack? or maybe who ever said it was 1.6 was only talking about from center to full left or right thus 3.2 lock to lock.
That was my assumption. Sadly, a 1.6 turn to lock (or 3.2 lock to lock) doesn't mean much... My Alltrac Camry is already there.

The 2.5 lock-to-lock variable ratio rack might be interesting. The question is whether it is variable steering ratio (slower at the center, faster at the ends?) or just variable assist (it has a vacuum line going to it...) depending on engine load.

-Charlie


Hey there Charlie long time no talk

Any how from what ive read it is just a variable assist depending on engine load like you said.

-Hope all is well Craig
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Re: steering rack improvements

Postby Mafix » Sat Nov 03, 2012 11:23 pm

variable generally means in the assist. as in the steering gets heavier.

a quicker rack would be great but...you guys will NEED to physically use a donor car. your power steering lines are not even close to the FWD variants although they are swappable. what that means is: you can use a fwd rack with your exsisting power steering IF you get the hard line set from a donor car. i've personally done this and it does work. that is the major difference i've found in the awd vs fwd rack and pinion (aside from price).

with the racing i do, i HAVE to have power steering. if you can turn that fast without it then your tires are way too small, lol!
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Re: steering rack improvements

Postby Meurz » Sat Nov 03, 2012 11:39 pm

Mafix wrote:with the racing i do, i HAVE to have power steering. if you can turn that fast without it then your tires are way too small, lol!

You need to fap more.
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Re: steering rack improvements

Postby CMS-GT4 » Sat Nov 03, 2012 11:41 pm

But then he could only turn fast in one direction. ;)
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Re: steering rack improvements

Postby klue » Sun Nov 04, 2012 3:48 am

There are variable ratio racks, meaning the gearing across the rack is not consistent. I think it would make more sense from a racing POV that it would be quicker in the center, but that could be the opposite for street cars. I definitely agree with keeping the PS, Im running 235s it takes a lot of muscle to hoop her around at autox, i could only imagine if I have a quicker ratio how much more effort it would take :P

Good points on the lines, should I be doing it again, they would all be replaced with lighter, easier to repair custom lines
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Re: steering rack improvements

Postby Mafix » Sun Nov 04, 2012 1:21 pm

11 inch wide in the front and 9 in the back. (mine is fwd, don't forget). yeah no ps = popeye arms and broken fingers.
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Re: steering rack improvements

Postby CMS-GT4 » Wed Jun 18, 2014 7:00 pm

k.beaty wrote:I'm using URAS steering spacers on my inner tie rods and they definitely give you a better turning radius. The ratio remains the same though. The only way to change that is to change the gears inside the rack.


Do you have a pn or source for these? Any mods needed?
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Re: steering rack improvements

Postby Mafix » Sat Jun 21, 2014 8:56 pm

now on 10.5 all the way around. ps isn't enough at idle!
they make a much simpler and far more universal device called a steering quickener.
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Re: steering rack improvements

Postby klue » Sun Jun 22, 2014 2:33 pm

Mafix wrote:now on 10.5 all the way around. ps isn't enough at idle!
they make a much simpler and far more universal device called a steering quickener.



Yes we have used these on race cars, but those have custom steering shafts. The ends need to be tig welded on, which I would hope no one is even attempting for a street driven vehicle
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Re: steering rack improvements

Postby CMS-GT4 » Tue Feb 24, 2015 4:57 pm

Has anyone with lhd found a solution?
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