problem traction

[845ste]

lately in the circuit in the tight corners with the 2nd and 3rd gear I have a lot of traction problems.

my friends with gt3 and ferrari scuderia have a much lot of traction out of corners.

Do you have any special adjustments to help a good traction ?

in front I adjusted the soft shock absorbers (good for braking) and rear it is quite hard.

I'm wrong?

the cornering speed is excellent but the traction no !!!
thanks for the answers

[Storer]

Have you got a LSD or open diff?

[EVO CL]

What are your rear toe and camber settings? running sway bars?

[845ste]

ciao, i have g52 with LSD.
toyo semislick with 1.5 bars-
original parameters (toe, ecc) factory..

maybe i have to change something at the rear?
thanks

[Storer]

it is worth remembering that you have far more torque at lower revs than the others.

They also have traction control.

[845ste]

yes but here no one has problems in the track at the exit of tight turns in 2/3 vs Gt3 / Mac / other????
or if there is any particular adjustment to help traction?
thanks

[EVO CL]

A combination or all of, soften rear dampers compression, softer rear sway bar setting, rear toe closer to 0, less rear camber, softer rear springs, more rear wing angle, more practiced right foot.

Is it spinning one wheel or both?

Edited by EVO CL on Wednesday 24th October 10:56

[845ste]

sway bar? original gtr not have.

my problem is not the cornering speed in "support" without accelerating - neutral - (is ok) but the lack of traction on the exit in 2/3 gear. I can not accelerate.

it seems that rear you lacks weight that keeps the tires crushed to the ground.

maybe I have the soft shock absorber adjustment?

instead the 911 yes.(no TC)

[deadscoob]

You shouldn’t have traction problems in 3rd gear with your engine.
Have the tyres gone off? If not get the geometry checked.

[845ste]

ciao Craig i have 594hp .and toyo semislick at 50% of new.
do you not have prob with your ls7? 700 hp?
only exit from tight curves.
have you original factory geometry ?

[Storer]

Use the engine's torque and a higher gear.

If you are changing down and using more than 5000 rpm in second you would be better to use 3500+rpm in 3rd.

The V8 is all about torque and torque equals acceleration.

[UltimaCH]

Storer said:

Use the engine's torque and a higher gear.

If you are changing down and using more than 5000 rpm in second you would be better to use 3500+rpm in 3rd.

The V8 is all about torque and torque equals acceleration.

+1

[deadscoob]

Yep. Only ever use 2nd gear for setting off on track, 3rd is lowest I go.

And no, I don’t run factory settings. Ref your tyres, even though they’re only 50% worn, are toyos sensitive to heat cycles? Assume your pressures are correct? Track tyres can be v sensitive eh

[845ste]

thanks all.

i use 1.5bar at cold.

yes i use 3 but often in these curves it's not good, for many reasons.

which settings geometry do we use the gtr in track?

it would be interesting to compare the various settings.

probably my 50% and 4 years old toyo are already sold out.

[EVO CL]

4 year old tyres would definitely be a big contributor to the loss of traction.

[BogBeast]

I will be the first to hold my hand up and say that I don't know an awful lot about LSD's (and would gladly defer to someone more knowledgeable..)

But I was always under the impression that the LSDs in std gearboxes were 'tuned' for the variety of car that they came out of and as such not optimal for the Ultima. Maybe this is a case for some tuning here?

[F.C.]

BogBeast said:

I will be the first to hold my hand up and say that I don't know an awful lot about LSD's (and would gladly defer to someone more knowledgeable..)

But I was always under the impression that the LSDs in std gearboxes were 'tuned' for the variety of car that they came out of and as such not optimal for the Ultima. Maybe this is a case for some tuning here?

You are right. I had the pre load on my LSD altered to suit my car.
The original settings for the box mentioned are based on a heavy rear engine configuration so lift off over-steer was to be kept in check.

With a mid engine the diff needed "softening" up.
It made a big difference to feel on trailing throttle and transition to leading throttle in my car.

[845ste]

I agree. LSD has a delay in the intervention already originally.
probably, being also worn and calibrated for a lot of weight, it intervenes badly.

[F.C.]

845ste said:

I agree. LSD has a delay in the intervention already originally.
probably, being also worn and calibrated for a lot of weight, it intervenes badly.

I would see a specialist (Porsche transmission) and seek their opinion there is a lot of adjustment available, the plates can wear, but in such a light car they should be good for a long time.