??

Thank You

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1990 Toyota GT-Four ST185. RC motor, 205 box and a GT30!!


1987 Toyota GT-Four ST165. Wanting to be a Rally car!

No

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Vice Chairman
1990 White UK Celica ST185 - Project DTM
1997 Cream BMW R1200C (as seen in James Bond "Tomorrow Never Dies")
2005 Jaguar X-type 3.0 Sovereign AWD Automatic
Blood Bikes - https://www.freewheelers.org.uk/

Nige,

have you ever tested ? or where did you read etc

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ST165 turbo 4WD
ST185 GT-FOUR RC Carlos Sainz Limited Edition 825•5000
ST185 turbo 4WD Carlos Sainz Limited Edition 2541•5000

Sorry I probably ought to clarify that....
I investigated using the Cusco web site.
http://www.cusco.co.jp/en/catalog/chassis.html
There's no underbody brace listed for the ST165.

Have you tried Gary?

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Vice Chairman
1990 White UK Celica ST185 - Project DTM
1997 Cream BMW R1200C (as seen in James Bond "Tomorrow Never Dies")
2005 Jaguar X-type 3.0 Sovereign AWD Automatic
Blood Bikes - https://www.freewheelers.org.uk/

nope.

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ST165 turbo 4WD
ST185 GT-FOUR RC Carlos Sainz Limited Edition 825•5000
ST185 turbo 4WD Carlos Sainz Limited Edition 2541•5000

I've had an e-mail convo with my Swiss homie Stefan about this a while ago. He's building the JDM'est 165 ever and based upon the specs of my 185 CUSCO Lower arm bar type II (the 4 point one) he said it won't work.

The type I (2 point) apparently is interchangeable though..

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René - Carlos Sainz 2433•5000
Turbocelica.nl | ST185 CS restoration and full rebuild

If it ain't broken.. it soon will be

This brace is a waste of time imho... sorry to disappoint owners/potential buyers!

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Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
http://www.gtfours.co.uk
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Turbocharging - the replacement for displacement

I beg to differ and imo I do think it works
But...
I think it works well with other modifications, e.g, uprated suspension, uprated front arb and steering geometry.
This is based on my experience of using one with my ST205.

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Vice Chairman
1990 White UK Celica ST185 - Project DTM
1997 Cream BMW R1200C (as seen in James Bond "Tomorrow Never Dies")
2005 Jaguar X-type 3.0 Sovereign AWD Automatic
Blood Bikes - https://www.freewheelers.org.uk/

Have to say I'm with Kris here, if you look at the solid steel three dimensional structure that the Cusco underbrace attaches to, I can't see anyway that a bent piece of aluminium is going to do anything.

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GT4DC Events Co-ordinator
1996 ST205 UK

Well I thought the handling on my ST205 was improved after I'd fitted mine.

Short of doing a scientific analysis I dont think any one can say conclusively either way whether underbody braces make a difference. All I would say is that in karts the handling is super critical and tweaked using cross braces and adjusting small things like the tightness of the bolts. Admittedly a kart is a lot different to a car but when I stripped my car down to the bare shell the lack of torsional rigidity was scary

Basically anything that creates more of a three dimensional cage structure in the chassis will improve the chassis stiffness. There's an Aussie company that makes a whole range of under chassis braces for the Impreza. I suspect this is aimed at people who don't want to fit an internal roll cage cutting holes in the trim and losing the rear seats. The underbody braces wont give anything like the 3D stiffness of a full roll cage but I'm sure they are better than the bare chassis and that can only be a good thing.

My 2p!

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Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp

im also with muddy water and track toy four.. i put one in my 185 and thought it was the best handling mod i have done so far.. it drastically reduced understeer around a corner that i normally take pretty hard.. its also saved me from flying into a tree..

its so annoying that the 165 has such little aftermarket support compared to the 185 and 205.. Cant even work out a low temp thermostat *bleep*??

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1990 Toyota GT-Four ST185. RC motor, 205 box and a GT30!!


1987 Toyota GT-Four ST165. Wanting to be a Rally car!

The GT4 chassis needs all the help it can get. Both my st185 & st205 had serious wobbles over large road undulations and you can feel the chassis twisting then springing back and continuing to oscillate. (A bit like a soft top & scuttle shake). Stiffening the suspension made it worse as less of the movement required was taken up by the suspension.

The 2 sporty cars I now regularly drive (built circa 2003) have far stiffer chassis for torsional rigidity and don't suffer the same way.

Personally I believe that the upper braces provide a noticeable improvement to turn in. Having looked at the subframes I just can't see how the lower brace will improve anything. Neither will do anything for the floppy sills and roof which is more fo a concern.

Try jacking your car up from one corner and watch the chassis sag & twist. Then try it on a new car with good torsional stiffness.

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JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

The 185 setup is different to the 205 and may well benefit from the underbrace... I just don't think the 205 benefits from this addition - just look at the front subframe and how a bent piece of aluminium and stiffen this area is difficult to see...

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Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
http://www.gtfours.co.uk
_______________________________________
Turbocharging - the replacement for displacement

Hi,

i'am also with kris even i don't tested it, the only one reason for me to put this brace on is that it is a nice bracket for a undertray

the chassis and suspension does not have such a wrong that makes the brace in need, or you should not drive the car any longer

greetz

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KEEP COOL UNDER PRESSURE

street legal?.....perhaps in tschibuti

So you only improve your car on parts that will fail otherwise?

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René - Carlos Sainz 2433•5000
Turbocelica.nl | ST185 CS restoration and full rebuild

If it ain't broken.. it soon will be