Jump to content
SAU Community

Recommended Posts

Hi Guys,

Been using my R34 GTT Sedan for track stuff for years.  Slowly releasing the content and enjoying the great tracks in Aus.  Anyone have any tips on setup for a well balanced grip car?  I'll run semi slicks all round in the future.

Theres a few vids on my account, some drifting, a dyno run and some grip events.  https://www.youtube.com/watch?v=M1tEZWxhF0w

 

image.thumb.jpeg.b16b21be2b1a1cf72cb61c808f97f15d.jpeg

  • Like 1
Link to comment
https://www.sau.com.au/forums/topic/483864-my-r34-gtt-drift-and-now-grip-car/
Share on other sites

  • 3 weeks later...

The springs seem like a reasonable start for track work, although you probably want adjustable sway bars as well.

The adjustable arms themselves are no use, you need to know the alignment. Generally you want a little toe in to 0 static at the rear for stability and at the front as much caster as you can get, camber you can decide by tyre wear but around 3-4o

From there, basically the more tyre grip you have, the less roll you want as the cornering forces increase. So best get the semis on (some are better than others, and new is always better than old) to see how the balance is front to rear.

Also, a locked diff is NFG for track work. You want a mechanical LSD, preferably 1 or 1.5 way

On 8/5/2022 at 4:40 AM, Duncan said:

The adjustable arms themselves are no use

As an extension of that thought, if you do not also have adjustable front radius/traction arms, and if you have not had them properly** set up at the same time as any adjustments to the uppers (when camber is being set) then you  will likely have an excessive amount of bump steer and the rear end will actually be worse off.

**I built a bump steer measuring setup with a laser, mirror, etc and spent.....a whole day, and most of another day, getting both sides of my car to minimum bump steer. (Was a slow effort because I was designing/building the rig as I went, to start with). Then I had the rear camber adjusted a little at the next proper wheel alignment and had to set the bump steer rig up again to dial out the increased bump steer that it caused. Car's rear end behaviour was substantially nicer afterwards.

To get that done by a specialist would be.....near impossible in most places. Almost no chassis/wheel align shops would be willing to put up with the f**king around. And the fee would be horrendous. Racers and shops that cater pretty much only to racers would probably be set up to do it and do it reasonably efficiently, but it would still cost many hundreds of $$. My time should be worth even more than that, but fuddling about with the car is also therapy, so meh.

  • Like 1

I just realised that I made a small error of message above. When I said "adjustable front radius/traction arms" I was actually referring to the ones on the rear suspension. I said "front" because I meant they're at the front of the collection of arms on the rear of the car, only got halfway through the thought before full stopping. The message above is only relevant to the rear suspension, because the front radius rods don't really have that much (if any) effect on bump steer.

  • Thanks 1
  • 3 months later...

Here it is at Eastern Creek on Tuesday night.

 

 

 

Had an absolute driving this track. The vibrations through the drivetrain at 200+ was scary and the rack bushes worsened over the sessions. Keen to make it faster.

 

 

  • Like 1

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


  • Similar Content

  • Latest Posts

    • Sorry to hear your HFM BM57 was faulty,  did you contact HFM I would hope they would be at least grateful for the information if there was some sort of manufacturing fault, you would hope they would be sympathetic even if your item was 2 years old if it had never been fitted. May I ask where it leaked from ?
    • Cats are called Bella, and Donna...  Like that poisonous plant And I remember your 2 monsters, I remember making a little bit of wee when you let them out... LOL I have already installed cat doors into the laundry where their kitty litter is, and the sun room, apart from the cat doors there's not going to be any permanent mounted stuff on the interior walls (interior doors are cheap and easy to replace) I will get a outdoor cat cage thingie once I finish the landscaping out back... https://catnip.com.au/ The only off limit areas are the main bedroom and the gym room....but, currently the cats are curled up in bed, in the main bedroom with the Mrs.....LOL, the off limits for the kittens to the main bedroom lasted about 5 minutes with Jackie I currently only have 1 free standing huge cat tree multiple level scratching post thingie in the lounge room, but, I will be getting another one soon now that I'm happy with the furniture layout in the back room and have a perfect spot for it  
    • All of this is making it seem clear that running the Coppermix twin was definitely the way to go, especially in hindsight with how insane tariffs have gotten and the strength of the USD vs yen at the time.
    • That sounds like no chance of even importing one for road registering then Now I see why Duncan wants to check LHD rules for Targa...   I wonder how "bolt in" the AWD would be if you got one imported from the US and swapped it to an AUD one
    • Not to mention they drive like a bucket of bolts! yuck!
×
×
  • Create New...