Jump to content
SAU Community

Suggested Spring Rates For Track Work

Do-Luck
 Share

Recommended Posts

Do-Luck Veteran

Do-Luck

Posted
  • Author
Posted
I'm not 100% certain about the offsets, but sort of just getting some ideas at the moment. Main thing to sort out is the suspension first.

Would you maybe suggest I run 17x8 +25 up front, while leaving the 17x9 +17 on the rear?

Simon-S14 Grand Master

Simon-S14

Posted
Posted

some points.

I run 17X9.5 + 17 work XD9's and 235 tyres and they dont rub, my guards have been hand flared but not heaps... they wouldnt fit stock guards thats for sure. However im assuming most ppl here have rolled guards as a minimum.

I also run 7 kg front and 5 kg rear in my skyline, R33 front LCA's with new bushes, stock upper control arms with new noltec bushes also (didnt want upper camber arms) and this combo gives me 2.5 - 3 degrees (depending on the height i run) handling is fantastic and i have found that the longer LCA"s have almost eliminated any bump steer and they make for a very direct feel on the track.

Ive got the SK sway bars all round and run them medium front and soft rear, along with that ive got traction rods in the rear which ive spent a lot of time setting up, i was running 5mm longer then stock, with slight toe in an minimal camber and the rear grip was great. i have since changed all the specs for an upcoming track day (drift but i do some grip here an there) in the search of getting even more grip.

BHDave Grand Master

BHDave

Posted
Posted

A 235 RE55 is a big tyre. It'd be close to a 255 road tyre in width. On a 9 inch rim there is no stretch. It sits square.

To fit a 235 RE55 under the front of my gtst i needed gtr guards and i run a 17x9+25 rim for track work with around 3 degrees camber.

I previously ran a 215 AO48 on the front with a 17x8+30 rim with stock guards. Even that was close.

I actually have those wheels and tyres on an s13 atm with s14 LCA and about 3.5 degrees camber and it doesn't scrub at all and isn't an obvious offset fail >_<

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      AC not coming from top vents

      By GTSBoy · Posted

      What HVAC actuator is under the steering wheel? Do you mean on the RHS of the centre console, immediately to the left of your shin? If so, then yes, it is probably that one, because that is the mode door actuator, and from what I know, it's still a pain in the arse to replace. I don't know about whole dash out, but you certainly have to rip into the centre console section. I don't know if it's covered in the workshop manual, as I haven't spent much time looking at those parts of it. (and by "the workshop manual, I mean the R32 GTR one, which is the most comprehensive one we have, and it should be similar enough between that and later cars to serve as a guide).
    • dbm7
      Shifting questions

      By dbm7 · Posted

      ...oops. forgot the TCU end...
    • Sleepergm
      Custom titanium intake

      By Sleepergm · Posted

      No I got mine from a friend that had fabricated one … but I had to fit it to my setup which was a hks turbo setup. His was a Garrett -7. So one of my turbos was not a flange for one side … then I had a leak in the welds I had to find a weld shut … in the end the setup was decent priced but I spent a lot to get it fitted. A couple companies I checked would make it but you’re talking 7-9k aud with titanium. No joke mine was 6-7k even second hand after I had to fit it in Hong Kong … labour is expensive here. 
    • Kinkstaah
      NC MX5

      By Kinkstaah · Posted

      I'd just like to restate that I don't think anyone here is actually hating I recently sold a car part to a guy who was building a forged auto R34, with MV stall and aiming at ~450kw. I told him that I'm him, from the future and to stop after it explodes once. I told him I knew he won't listen the first time, and that's fine. But if my predictions do come true - Change direction faster than I did. I also said it's probably no coincidence that the dyno plot of a reliable turbo engine starts to look a lot like a N/A motor. :p
    • CRSKmD
      R32 Sedan - Grip and Drift (have my cake and eat it too build)

      By CRSKmD · Posted

      Got just the wing painted and fitted up to the existing boot. Big visual change and about time after having a GTR wing sitting in the shed since 2018 Headed up to Mallala with a quick obligatory stop in at Boliver OTR Oil control mods seems to have worked. I checked the catch can after session 1 and there was a dribble of water/e85 with barely any oil in it. After session 2 and 3 there was almost nothing and I stopped checking after that. so either great success or catastrophic failure/block of the external breather The GTR wing made a noticeable difference in the 160-185km/h sweepers. It was a very hot day for the cars at over 33C but the previously done cooling upgrade/ducting/water sprayers meant I never saw over 60C intake, 105C water and 100C oil and temps would drop back down very quickly once I shut it down. AD09's are a decent tyre but certainly and expectedly a step down when compared the the CR-S/AR-1 I have had on the car for years of track days. The handling characteristics of my car which I often describe using the Tony Hawks Pro Skater balance mechanic where either side of the center is understeer/oversteer was much more pronounced with no "green/safe" zone in the middle. However, imo it steers well/easily during oversteer largely thanks to the custom ACOSTAL front end. Enjoy a loose lap POV with my mate giggling away as a passenger.   Group photo for Peer Pressure Racing made it back home and gave it a wash Overall a great success compared to my previous two track days where i cooked the Starlets motor and blew up the new diff in the R32  
×
×
  • Create New...