The Sa Wasteland

[Damo_R34]

*sigh* its enough to throw his geometry all out of wack again

he has the front castor arms, the rear camber arms, the adjustable suspension... all 3 things that work in tandem to ensure the suspension actually works properly

u should enquire about getting that stuff engineered man, rory thompson does it for $500 odd if I recall correctly, and that mean you could continue using the control arms for caster/camber... not the suspension but eh, 2/3 is better than nowt

-D

my mate has a 31, with coilovers, and was successfully engineered, and passed regency.

[DamageInc]

my mate has a 31, with coilovers, and was successfully engineered, and passed regency.

just has to be legal height when engineered and their fine

[Dohmar]

just has to be legal height when engineered and their fine

what he said... my coilovers (both sets) are non adjustable and are regency friendly

its the adjustable caster and camber arms which are the biggie

height adjustable is not permitted at all

-D

[scandyflick]

apparently those pedders coilovers can be engineered at whatever height you want.

just what ive heard from troy at tyrepower, hes done the leg work to get a couple cars engineered.

Edited March 3, 2010 by scandyflick

[Dohmar]

apparently those pedders coilovers can be engineered at whatever height you want.

just what ive heard from troy at tyrepower, hes done the leg work to get a couple cars engineered.

probably would be the go. having run bilsteins and teins, they both have their benefits, but the ideal setup would be something in between

the teins are stiff, which is good when the road drops out from under you, but is a bad thing when the road slightly undulates as you find the rear end bouncing

on the plus side, its a progressive rate spring so it absorbs the initial impacts better

the bilstein is lower and has a softer spring rate, which is awesome for cornering and general use, however then the road disappears from you (aka a dip) your arse just dumps to the ground and u end up scraping the exhaust on the tarmac

i'd love to know more about suspension, its an art and a science of which i know nothing about

-D

[skwiz]

Same here Dohmar, hopefully Tafe deliver.

As you probably do, google is your best mate on this one.

Only just learning how toe in and toe out affect the car via some site.

[Luke_ENR34]

Height adjustable coils can be engineered. Mate got his greddy ones done, aswell as his Cf bonnet

[Dohmar]

Same here Dohmar, hopefully Tafe deliver.

As you probably do, google is your best mate on this one.

Only just learning how toe in and toe out affect the car via some site.

yeah the suspension is the hard part, spring rates, rebound, bump, sag, valve pressure etc - thats the hard part

caster is easy.... the more positive front caster, the better

camber is easy... couple degrees negative camber, alles gut fur street und track

neutral toe for the gtr rear with hicas, and 1' inward toe for the front

thats what im running so far, altho i need some new front caster arms to correct the pull to the left hand side

-D

[Dohmar]

Height adjustable coils can be engineered. Mate got his greddy ones done, aswell as his Cf bonnet

who'd he get em engineered thru?

Would be nice to get ISC's coilovers engineered as a group thing, so everyone who runs them has some kind of cert to help with regency

-D

[Weezy]

I thought to get coilovers legal, you have to weld up the adjustors at legal heights?

[scandyflick]

toe is something you have to be pretty careful with.

it can either make your car handle beautifully, or turn it into an absolute dog.

[Dohmar]

toe is something you have to be pretty careful with.

it can either make your car handle beautifully, or turn it into an absolute dog.

totally... which is why some people love the 1' toe in that HICAS delivers, and some people hate it

really all depends on the response of the HICAS itself and the driver, but I guess im in the minority when I say I really like my HICAS and am happy to have spent the effort getting it working right, rather than just locking it

0.02c, your mileage may vary

-D

[scandyflick]

hicas, tits on a bull = same same.

[Dohmar]

hicas, tits on a bull = same same.

depends on your mindset.... japs designed it for a reason, and that was to handle touge runs better than the competition....we dont quite have the same twisties (or road quality) that the japs do (sadly)... its less effective in aus I'm sure considering the amount of time our wheels spend off the road due to the crap quality of our asphalt

general racer concensus seems to be that hicas is a hinderance on a proper racetrack, which I can understand the argument behind this, however I'd also point out that nissan thought it convenient enough to keep on all their R series cars from the r31 up to the 34 so it can't be >that< bad

Disclaimer - I'm no performance driver. I just do hills runs for my jollies.

-D

[Weezy]

Quickly everyone, I need help with tyre size choices!

I have a set of Work Meisters as some of you may know, sizes of them are 18x10 +13.

Being on a 32, these offsets are fairly agressive as most of you too would know...

Do I go for a 245/35 or 245/40

I want to try and dodge rolling my front guards, but will be getting my rears done. Opinions PLEASE.

[Dohmar]

Quickly everyone, I need help with tyre size choices!

I have a set of Work Meisters as some of you may know, sizes of them are 18x10 +13.

Being on a 32, these offsets are fairly agressive as most of you too would know...

Do I go for a 245/35 or 245/40

I want to try and dodge rolling my front guards, but will be getting my rears done. Opinions PLEASE.

u need to work out ur rolling diameter from stock vs what u want to put on

otherwise your speedo will be out of wack and that will affect your attessa and hicas

best bet is to check a tyre placard and see what nissan actuall recommend. wish i could tell u what size u want, but i cant be stuffed...

-D

[Weezy]

I don't think Nissan will recommend a 18x10 fullstop lol

[Dohmar]

I don't think Nissan will recommend a 18x10 fullstop lol

I think they would not recommend it, due to homologation rules; below is taken from skyline wiki:

Under Group A regulations, a turbocharged engine must multiply its engine displacement by 1.7, putting the new Skyline in the 4000 cc class, and requiring the use of 10-inch-wide tires. Knowing that they would be required to use 10-inch-wide tires, Nissan made the decision to make the car all wheel drive. Nissan developed a special motorsport-oriented AWD system for this purpose called the ATTESA E-TS. Although this assisted with traction, it made the car 100 kg (220 lb) heavier; the added weight put the GT-R at a disadvantage to other cars in the 4000 cc class. Nissan then made the decision to increase the displacement to 2600 cc, and put the car in the 4500 cc class, with the car's weight near-equal to competing cars. The 4500 cc class also allowed for 11-inch-wide tires.

I think you're safe dawg.

-D

[Weezy]

Is there a difference to them saying tyres and wheels? As I'll be stretching a tyre on my 10" wide wheel to make it easier for them to fit my guards better and not be mexican spec aha

[Dohmar]

Is there a difference to them saying tyres and wheels? As I'll be stretching a tyre on my 10" wide wheel to make it easier for them to fit my guards better and not be mexican spec aha

ask scandy. hes the king of tyre philosophy imho

-D