Just Another GT-4 Build, We'll skip 10 years of shinangians and just get to the good stuff Options

[qatar11]

to the surprise of no one I'm sure, the ST184 steering rack does not fit.

[qatar11]

And we have adjustable control arms!! (no this is not the permanent solution)

[njccmd2002]

Why not buy the ones from techno toy tuning. They might fit

[qatar11]

Why not buy the ones from techno toy tuning. They might fit

The short answer is they did not come up when googling for adjustable control (suspension) arms... and when I reached out to a small shop - I got a pretty uninspired response, so I am going to make my own.

This post has been edited by qatar11: Jun 18, 2013 - 7:50 AM

[playr158]

a rhd subframe has different mounting points for steering rack.

Bonzai -
This is not true according to the EPC

I did, however, confirm that the Cross Member Sub Assembly is different between the ST204 and the ST205 - most notably where the steering rack is mounted... which might explain all the pain getting the AWD trans into my car... Seeeew At the risk of changing the angle in which the rack and tie-rods operate, I think the working plan will be to flip the steering rack around / find a LHD GT-FOUR steering rack.

So what I tried to tell you earlier you now found out
you can't flip the steering rack around :facepalm: and you can't use a USDM rack on a GT4 cross member.
If you want to stay LHD and use the GT4 subframe you need to source a LHD GT4 rack.
or you could use the ST04 subframe and your OEM steering rack and mount that.....

[qatar11]

So what I tried to tell you earlier you now found out
you can't flip the steering rack around :facepalm: and you can't use a USDM rack on a GT4 cross member.
If you want to stay LHD and use the GT4 subframe you need to source a LHD GT4 rack.
or you could use the ST04 subframe and your OEM steering rack and mount that.....

Agreed. Flipping the steering rack was a pretty horrible assumption.

I have the both racks in front of me (GT & GT4) and the GT one is shorter and I think the GT one sits a little differently on the sub frame... from the internet it looks like a LHD GT4 steering rack is a bit of a spotted unicorn. so using the GT steering rack I would have to make? some inner tie rods that can absorb the shorter rack...

[qatar11]

Just some sausage making here:




I have some inner tie rods I am going to try that are longer than the OE ST205 ones, which should compensate for the ST204 rack being shorter. Film at eleven.

[czwalga]

Wow those look nice.

[playr158]

Did you ever figure out your steering rack issues?

Since i'm RHD now, I'm using the GT4 rack + USDM tie rods.
However i'm pretty sure my tie rods are now ~3" total (1.5" maybe each side) too long

[qatar11]

Did you ever figure out your steering rack issues?

Since i'm RHD now, I'm using the GT4 rack + USDM tie rods.
However i'm pretty sure my tie rods are now ~3" total (1.5" maybe each side) too long

Funny you mentioned that.... I have (tentatively) figured out a solution to the steering rack issue. I measured everything up:



figured out that the ST204 Rack was ~3" shorter than the ST205 rack... so I took the ST205 inner tie rod to the local auto shop (the good kind, where you trip on engine blocks on the ground and the guy never answers his phone so you have to go in personally) and I asked for an inner tie rod but ~1.74 inches longer.

one week later... wa-la-presto:



I'm in the process of getting the sleeves that slide into the control arms and I should have some test fitting photos of the SS suspension installed

@player - I think what you need to do is the opposite... take your inner tie rod to a good auto shop and ask for something shorter.... then you can send me your original inner tie rods so I can have spares for the race car. Or... cut it down... and re tap the end... also an option

This post has been edited by qatar11: Sep 11, 2013 - 7:55 PM

[qatar11]

Also... W2A Intercooler pump test fitted:

[playr158]

Nice work dude!

Yea I believe I need to do the opposite of you, so i'm going to cut mine down

[BonzaiCelica]

awesomesauce thats what you need to do playr158 as well as i. qatar how much did they charge you. some people said 2 inches shorter but muaha finally we have exact number 1.74 inches shorter for usdm inner and outter tie rod for those that want to put superstrut on the lhd american celica's

This post has been edited by BonzaiCelica: Sep 11, 2013 - 11:09 PM

[playr158]

Bonzai you're confused

USDM LHD + SSS = ~1.74 inches longer inner tie rods

JDM RHD + McPherson = shorter inner tie rods (ST205 rack + USDM tie rods)

[BonzaiCelica]

Bonzai you're confused

USDM LHD + SSS = ~1.74 inches longer inner tie rods

JDM RHD + McPherson = shorter inner tie rods (ST205 rack + USDM tie rods)

qatar is there any way you can split open the usdm rack and superstrut to see if you can calculate which has a slower or quicker turning ratio. im just curious too see why toyota made one longer than the other..

proof or usdm guys will always run around with our heads cut off. why I say this is due to these almost good opinion and facts
you say too long others say too short, but what does that mean We need picks so we can clarify. If whatever set up they have is too long or too short the tie rods shouldn't even bolt into the knuckles right!?

http://www.6gc.net/forums/index.php?showto...p;#entry1024912

This post has been edited by BonzaiCelica: Sep 12, 2013 - 10:33 PM

[qatar11]

qatar is there any way you can split open the usdm rack and superstrut to see if you can calculate which has a slower or quicker turning ratio. im just curious too see why toyota made one longer than the other..

Erm... I might be able to? I am also very curious as to why they went with a different steering rack. It is a non-trivial change too because it forced Toyota make a different front sub frame despite the fact the SS suspension and McPherson suspensions are completely interchangeable... I wonder if they were going for the shortest inner tie rod length possible for strength or some kind of geometry advantage.. I did a fair amount of poking around and the ST205 steering rack is unique to the ST205 as far as I could tell... so its not being used on any other Toyota car...

proof or usdm guys will always run around with our heads cut off. why I say this is due to these almost good opinion and facts
you say too long others say too short, but what does that mean We need picks so we can clarify. If whatever set up they have is too long or too short the tie rods shouldn't even bolt into the knuckles right!?

This, I think is the fundamental flaw with using a forum as a repository for information... over a more organized and searchable system like a wiki. I approached a few guys on here many moons ago about setting up a wiki for all this content... I also reached out to coomer dog-years ago because I wanted to data mine the forums as part of building the wiki but I didn't want to be perceived as "stealing" anything <shrug>.. still would be great to do...

This post has been edited by qatar11: Sep 13, 2013 - 11:03 AM

[qatar11]

Just looked in the notebook

Length of the ST205 steering rack = 24 6/16 +/- 1/16
Length of the ST204 steering rack = 21 1/16 +/- 1/16

Try to remember that the measuring was.... less than laboratory grade.

[qatar11]

Started the templates for the rear subframe mounting...

[njccmd2002]

do you think cardboard will be strong enough ?


LOL, whish u good luck..

[qatar11]

do you think cardboard will be strong enough ?

I sure hope so....














I am trying to use the existing subfram mounts as a way to provide a common mounting point for both brackets to gain an understanding of the positing of the sub-frame in terms of its centeredness.... it seemed to work and I had both rear sub-frame brackets installed and the rear sub-frame located... the forward sub-frame mounts are a much more interesting challenge.