R33 Skyline Understeer?

[sk8tepenguin]

Hey guys, I been playing with diff and suspension settings for weeks now and I just can't fix the excessive understeer in my Nissan R33 GT-R V-Spec. I know it's 4WD and you can't get rid of it completely but I thought I could atleast make it turn instead of going straight on. I even tried a 100% factory fresh R33 and that handled like a FWD car... is it just a rubbish chassis or is there something in the settings I've missed?

 

[MTLclllutch]

it is for sure your suspension settings. What diff settings are you using. Ill run a couple of laps with one and let you know what i find. premium right?

 

[Poontanir]

If I recall correctly the R32 R33 and R34 all have heavy front ends which might require an aggressive tune. I would try a high front camber, open front diff, even or softer on the front sway bar setting, and shifting as much power as possible to the rear. I assume zero toe.

 

[DigitalBaka]

IMO don't use an LSD/TSCD on a GT-R. You'll lose all the fancy electronics that make the GT-R...same with the Evo. See if you can tweak the suspension without using the drivetrain mods and see if that helps.

 

[sk8tepenguin]

it is for sure your suspension settings. What diff settings are you using. Ill run a couple of laps with one and let you know what i find. premium right?

Yes it is the Premium one, I have bought one of everything apart from the gearbox because I hate the sound of the straight cut gears, and thanks for doing a few laps.

If I recall correctly the R32 R33 and R34 all have heavy front ends which might require an aggressive tune. I would try a high front camber, open front diff, even or softer on the front sway bar setting, and shifting as much power as possible to the rear. I assume zero toe.

I have it at 25/75 torque split, I tried 20/80 but that just made it incredibly tail happy and didn't fix the understeer, it just made it harder to drift out of a corner.

IMO don't use an LSD/TSCD on a GT-R. You'll lose all the fancy electronics that make the GT-R...same with the Evo. See if you can tweak the suspension without using the drivetrain mods and see if that helps.

I shall try removing the adjustable diffs, but if that doesn't work, my current settings are:

Front Diff:
Initial Torque: 10
Accel sensitivity: 25
Decel sensitivity: 5

Rear Diff:
Initial Torque: 10
Accel sensitivity: 60
Decel sensitivity: 5

Centre Diff:
25/75

Suspension settings:

Front:
Ride height: -10mm
Spring Rate: 6.0
Dampers (extension): 4
Dampers (Compression): 4
Anti-Roll bars: 3
Camber angle: 3.0
Toe angle: -0.05

Rear:
Ride height: -10mm
Spring Rate: 12.8
Dampers (extension): 7
Dampers (Compression): 7
Anti-Roll bars: 5
Camber angle: 1.0
Toe angle: 0.00

Front brakes: 5
Rear brakes: 6

And downforce set to minimum (0 front, 3 rear)

 

[sk8tepenguin]

Just tried this guys setup: https://www.gtplanet.net/forum/showpost.php?p=6027192

And it's a major improvement, infact I dare say this is the best handling GT-R I've driven! (yes better than the R35)

 

[DigitalBaka]

I'd say "absolutely" but I might get accused of being RJs biggest fan...again.

But you'll notice, no LSD/TSCD on that tune. The ATTESA is just that good.

 

[VTiRoj]

I'd say "absolutely" but I might get accused of being RJs biggest fan...again.

But you'll notice, no LSD/TSCD on that tune. The ATTESA is just that good.

Accused? Nah. Why accuse you of something that is fact? It's like accusing me of tuning cars.

 

[viperbeatsvette]

Hey guys, I been playing with diff and suspension settings for weeks now and I just can't fix the excessive understeer in my Nissan R33 GT-R V-Spec. I know it's 4WD and you can't get rid of it completely but I thought I could atleast make it turn instead of going straight on. I even tried a 100% factory fresh R33 and that handled like a FWD car... is it just a rubbish chassis or is there something in the settings I've missed?

Put torque diff to around 25 75 or 20 80

 

[Poontanir]

Suspension settings:

Front:
Ride height: -10mm
Spring Rate: 6.0
Dampers (extension): 4
Dampers (Compression): 4
Anti-Roll bars: 3
Camber angle: 3.0
Toe angle: -0.05

Rear:
Ride height: -10mm
Spring Rate: 12.8
Dampers (extension): 7
Dampers (Compression): 7
Anti-Roll bars: 5
Camber angle: 1.0
Toe angle: 0.00

Just tried this guys setup: https://www.gtplanet.net/forum/showpost.php?p=6027192

And it's a major improvement, infact I dare say this is the best handling GT-R I've driven! (yes better than the R35)

I'm glad you found what you were looking for. I would like to thank you for posting your setup you were trying and posting the solution you found; many more people can learn from your experience. As a bit of explanation the first thing I saw wrong with what you were trying was the front end being extremely soft. Making the front so soft made the front very lazy; the front had grip but wasn't responding to input fast enough to make use of the grip. I could go on but this isn't the place for it.

 

[shmogt]

ok i'm guessing you don't care since you have a setup, but I got one in case you want it maxed out https://www.gtplanet.net/forum/showthread.php?p=5507194#post5507194