Rear-Wheel-Steering: Myth or Miracle?

[svxistentialist]

Originally Posted by nutshell

"Ah..you are so right
The corner she was more than tight

A turn I'd made well in the past
With AWS turned into a blast

The hammer down
The foot extended
Meant...in an instant...both tires had to be mended"

Anyway...just wondering if there are any special caster/camber/toe-in settings for AWS..as opposed to the regular settings for the SVX?
Those four new tires; the fronts are exhibiting wear signs on the outers, (after 35K) while the rears look just fine. I am swapping them end-for-end to prolong the life...and we shall see how they continue to wear...but any info on geometry settings would be great to have...to check all is A-OK.

I have the Australia WSM for the car, it gives no details on this.

Not surprising really, as the 4WS version was only ever sold in Japan.

If anyone has these figures, it will be Phil, he'll chime in if he has them.

My gut feeling is they are probably exactly the same. The only one that might be different is maybe the rear wheel camber, but I'd still expect it to be the same.

If your new tyres are wearing on the outsides, your front wheels are toe'd in too much. Bring the car to a 4 wheel laser alignment bloke, get it done properly.

Joe

[PaulSVX]

Check tech specs on Nissan 300ZX It is equipped with AWS

[intellibomb]

i want iwant

what are the implications of getting 4ws into a US spec car?

obviously getting all the parts, such as the mitsubishi actuators and what not, as well as the ecu...

but from the accounts i have read here, i feel like making it work would be worth the thousands it would probably cost.,..

perhaps even aquiring a 4ws rhd car, and taking the goodies...

damn subaru for not shipping this to us dumb americans

[AlcyoneDaze]

Personal preference really. A lot of a Nissan owners will go out of their way to disable the HICAS system on their cars. 4WS really went away after the mid-90's: added complexity + cost for minimal benefits.

Prelude, MX6 & RX7, 240SXSE & 300ZXTT, Celica GT-R, Skyline GT-R, 3000GT VR-4...

All mid-90's sports coupes, All did away with the system.

SOME newer vehicles, mostly full-size trucks, use passive systems or quadrasteer as a parking/towing aid, but its an option most people don't want.

[nutshell]

Originally Posted by svxistentialist

If your new tyres are wearing on the outsides, your front wheels are toe'd in too much. Bring the car to a 4 wheel laser alignment bloke, get it done properly.

Thanks to the suggestion mate. Did that and went to rotate the tires; only to find the R/hand front was cut up beyond belief on the inside. Replaced the tire. Put the vehicle on a laser align (they had settings for the CXD). Perfect alignment. The puzzle deepens. Maybe control arm bushes?

I've started a new thread "Front tire wear = worn suspension?" in Tech Q&A.

[nutshell]

Originally Posted by AlcyoneDaze

Prelude, MX6 & RX7, 240SXSE & 300ZXTT, Celica GT-R, Skyline GT-R, 3000GT VR-4...

To the best of my knowledge they all use hydraulics - not electronics.

[svxistentialist]

Originally Posted by nutshell

Thanks to the suggestion mate. Did that and went to rotate the tires; only to find the R/hand front was cut up beyond belief on the inside. Replaced the tire. Put the vehicle on a laser align (they had settings for the CXD). Perfect alignment. The puzzle deepens. Maybe control arm bushes?

I've started a new thread "Front tire wear = worn suspension?" in Tech Q&A.

I'll check your thread. Laser align only checks how the wheels line up when STATIC. As you no doubt know.

There is movement in some of the suspension components that is allowing the tyre and wheel be dragged outwards by the traction at the road surface.

If it is bad, then it is likely you have a few mm of unwanted movement, and the bushes are the likely culprit.

Maybe Beav would have an idea from experience?

Joe

[AlcyoneDaze]

http://cgi.ebay.com/ebaymotors/Subar...QQcmdZViewItem

read the first page of the item description, this chap is claiming to have the rare passive all wheel steering on his LHD car... I suggest detaining the car for further interogation

[svxistentialist]

Originally Posted by AlcyoneDaze

http://cgi.ebay.com/ebaymotors/Subar...QQcmdZViewItem

read the first page of the item description, this chap is claiming to have the rare passive all wheel steering on his LHD car... I suggest detaining the car for further interogation

Strange mixture of terminology. Hard to know if he is trying to confuse, or is confused himself.

The rear suspension of ALL SVXs has passive rear steer.

What is rare is the '91-'92 only JDM version L, which had active rear wheel steer.

Nice seats.

Joe

[SURTEESS]

member NUTSHL has AWS on his baby & I beleive that TREVOR has a full set of manuals for RHD that includes AWS information.

from the far south

(well New Zealand at least!)

[svxistentialist]

I think it was Nutshell who started this thread, so yes, he has the system.

To the best of my knowledge Trevor does not have a full set of manuals with information on the active 4WS version. If he does have it, he's been keeping it quiet.

What he may have is this translation from the Japanese of the Subaru description from the Japanese Owner's Manual :
http://www.geocities.com/jamsvx/trans4ws.html

I am lucky to have the full set of Australian manuals myself, and there is no treatment of the active AWS components, because that variant was never destined for export to English speaking markets.

Joe

[NikFu S.]

Originally Posted by Darren

The proof of just how good will be in a couple of months when I should be taking the svx to Germany for its 1st across Europe blast and will be visiting the awsome Nurburgring racing circuit for as many laps as my wallet and tyres will let me!

Darren

Tell us when you go so we can get pics of you at the line.

http://www.nuerburgring.de/fileadmin/webcam/webcam.jpg

[nutshell]

Originally Posted by svxistentialist

What is rare is the '91-'92 only JDM version L, which had active rear wheel steer.
Joe

Anyone care to demystify the term JDM please? I here seen it on this board several times and have no idea what it means

(updated entry)
For the record my AWS is a 1991 CXD . . .
The Chassis is CXD-002909 (corrected code)
The Type is E-CXD
The Option Code is DSC
The Model is CXDA25E
The Trans is TZ102YL1AA
The Engine is EG33DDX1DE


Ian

[Darren]

Its an abbreviation for Japanese Domestic Market

CXD is a VL spec, what year is your car?

You will have a model number on the plate that will should be:
CXD, (a letter, A onwards) & then should be 25E


(1) model division
　　　C: [arushione] SVX series

(2) body division
　　　X: Body basic type, [arushione] SVX

(3) aerodynamic volume displacement drive suspension division　
　　　D: 3.3 liters 4WD, 4WS attaching
　　　W: 3.3 liters 4WD

(4) year reforming division
　　　It starts from A

(5) door several division
　　　2:2 door

(6) grade division
　　　1:
　　　2: S3
　　　3: VE
　　　4:
　　　5: VL

(7) Transmission & fuel supply division
　　　E: 4AT DOHC and EGI

[svxistentialist]

Originally Posted by nutshell

Anyone care to demystify the term JDM please? I here seen it on this board several times and have no idea what it means

For the record my AWS is a CXD . . . to be precise the chassis # is CXD0029303. No mention of version etc.

Thanks Darren.

You are a mine of information . That looks like a direct translation of the Japanese. Nice one!

Ian, James Dunne, ex Australia, now working in London, James has the definitive site giving information about the Japanese Domestic Market cars [aka JDM ].

Check the information here:


Jamsvx Japanese Versions Page

Joe