Autocross Push bad help

CJBinder

Hey guys,
So raced my z today in autocross and I had severe pushing or hoping in the front. Only mods are Whiteline Front sway bar and CBE. Tires were at 38 all around. It was extremely hot day.

Any ideas on how to get rid of the major push. btw, front sway bar is on stiffest setting.

Granted I am in B Street class so major mods will push me out of that class but I am thinking coilovers would be key?

Dcocci

Tires. I had severe understeer and bought a set of square wheels and 285/35r18 hankook ventus RS3's. That got rid of all of my understeer. Get the best tires you can for your class

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-08 Porsche Cayman S

Brendan

What size and type of tire are you running?

CJBinder

I have the sport wheels with Continental Extreme Contact DW tires.


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Injen cold air intakes, Ported upper and lower manifolds, OS Giken LSD, F1 Long Tube Headers, Magnaflow CBE. Natural Baby

CJBinder

What wheel size do you use?


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Injen cold air intakes, Ported upper and lower manifolds, OS Giken LSD, F1 Long Tube Headers, Magnaflow CBE. Natural Baby

240se

If you are running 245/40-19 up front you can go to 275/35-19 on the stock Rays.

Dcocci

18x10.5 all around

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-08 Porsche Cayman S

cjwsrt6

First thing I would do is get a bigger front tire, it will help tremendously. if you want to stay BS just run 275 square. I am fairly new to this car but been autocrossing a little while. I have koni yellows, eibach front sway(on soft) and 275 RS3's square. I was pushing yesterday with my tires being new and greasy, the afternoon I decided to run the konis stiff up front, about 20% rear, 36f and 33r psi and it was handling great.
with all this said I would recommend tires first then possibly the konis if you want to do this every month

ufoz8mycow

Like everyone else said. The easiest way to dial that understeer out without getting booted from B stock is a front tire upgrade and more width. Check the books though as there might be a limit to how much wider over stock you can go in that class.

gomer_110

Make sure if you end up getting new tires you get the Bridgestone RE-71R's. Currently, these are the street tires to have for autox.

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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock

DR_

That front bar setup is too stiff for your current setup and track conditions. Once you have more tire (wider and stickier) it will work better. Until then go softer on the front bar.

POS VETT

Set the front bar to full soft and rear to full stiff. Try again.

CJBinder

Thanks guys going to soft for now. The sad thing is I just bought brand new front tires! I will be moving out of b stock since I am getting air intakes plus oil cooler and 4.08 rear gear soon.

Really appreciate all the information!


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__________________
Injen cold air intakes, Ported upper and lower manifolds, OS Giken LSD, F1 Long Tube Headers, Magnaflow CBE. Natural Baby

Zauskycop

Wow...right up to...ASP? Or is that SM2? Not sure on the rear gear...may be a EM?

gomer_110

Last I knew I believe rear gear sends the 370Z to F-Prepared. If the OP wants to be competitive, doing the rear gear is a bad idea. As a couple of the top FP cars in the country are local to me, I can say there's no way the 370Z can compete. At least not without spending an absurd amount of money.

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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock