What Spring Rate And Sway Bar For R33 Gtr 90% Track

[BoostdR]

I am after some guildance. Trying to decide what spring rate and sway bar to go for.

I am changing out my mines Ohlins for some custom coilovers specs are;

48mm valve monotube

External resevoir with sep rebound and compression adj, 800n range

Dual Springs(helper spring)

Steel bottom mounts

The car;

R33 GTR

RB32DETT(tad heavier in the front)

1590kg

Full Slicks 18x270

500awkw

Currenty has std sway bars but will upgrade to reduce body roll rather than a heavier spring.

Front coil?

Rear coil?

Front Sway?

Rear Sway?

Matt

[BoostdR]

Anyone with track experience?

[MrStabby]

Try posting in Motorsport.

FWIW i have Riskings old Oran Park setup - 8.2fr 6.4rr, but his car is a 32 with a stripped interior...

[Risking]

Any idea what brand and valving you will be using in the shocks??

Really who ever is doing the custom shocks should be valving them and recommending a spring rate to get you in the ball park.

I'd be trying something between an 8.5-9 front and a 6-7 rear to begin with. Depending how sensitive you are to the car you may go up or down from there.

I'd also be getting a set of selby or similar bars locally. I like to keep to factory size +2mm if needed. Rather shorten the bar up to get use from it as opposed to going larger and increasing the weight.

[BoostdR]

No brand, 48mm mono valve. I asked for bilstein style valves 50/50

Have been looking at the Whiteline 24mm sway bars with Spherical mounts.

8.5-9 front and 6-7 rear looks good

Should I also look at a roll center adjustment Like these?

Matt

[ichi-go]

If you are not lowering the car alot (well you shouldnt as it will compromise suspension stroke), then you wouldn't need RCAs, and the only RCAs that work is the Moonface ones, all others are just for looks

Edited April 16, 2011 by ichi-go

[Risking]

All roll center adjusters are rubbish including those moon face ones.

Have a search for rollcenter in this section.

I've covered it many many times for various people in depth and basically.

To correct roll centers and all geometry with a lowered car you need to move more than the lower control arm like moonface and others do.

[BoostdR]

All roll center adjusters are rubbish including those moon face ones.

Have a search for rollcenter in this section.

I've covered it many many times for various people in depth and basically.

To correct roll centers and all geometry with a lowered car you need to move more than the lower control arm like moonface and others do.

Couldn't find anything on Roll Center??

[bigmikespec]

All roll center adjusters are rubbish including those moon face ones.

Have a search for rollcenter in this section.

I've covered it many many times for various people in depth and basically.

To correct roll centers and all geometry with a lowered car you need to move more than the lower control arm like moonface and others do.

I still have the piece of paper to show this!

[Risking]

Ill find the hread latter,

Those big geomerty plots we did to prove they are shit mike??

[BoostdR]

Ill find the hread latter,

Those big geomerty plots we did to prove they are shit mike??

any luck?

[bigmikespec]

Those big geomerty plots we did to prove they are shit mike??

Yep!

[BoostdR]

in finding the thread relating that is?

[Risking]

Here is one of the threads I had in mind.

Lotus GTR's roll center thread

Sorry took so long, get busy and forget

[R TUNE]

Speak to sydneykid, he seems to be the go to guy for suspention issues.

[Luke_GTS-T]

So Brad, you don't think getting the moonface rca's would help with bump steer either as they claim they do?

I'm undecided with whether to get moonface rca's or just oem replacement rod ends....

sorry for thread hijack