Autocross

ONLY for ADVANCED technical discussion about the 240sx!
Derf
Posts: 40
Joined: Mon Nov 01, 2004 1:29 pm

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I plan to Autocross the 240 in spring. I just got it. it stock. what would you recommend me doing to make it the best. I wouldn't mind racing stock but like to race the next class up or more. What are your recommendations. I still like to have it to use as a daily driver if needed


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Axel Grungy
Posts: 4711
Joined: Tue Jul 08, 2003 8:13 am
Car: 2001 G20 5spd
Location: Cincinnati OH

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struts/springs, swaybars, TIRES!!! strut bars, intake, brake pads

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Axel Grungy
Posts: 4711
Joined: Tue Jul 08, 2003 8:13 am
Car: 2001 G20 5spd
Location: Cincinnati OH

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actually the best mod for autox is just time behind the wheel. learn your car.

jmauld
Posts: 97
Joined: Fri Apr 04, 2003 5:16 am

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Koni's, front swaybar, and good tires.

Stay stock and learn to drive.

s13sr20chris
Posts: 4148
Joined: Tue Jun 10, 2003 9:32 am
Car: '89 Nissan S13 w/redtop running 13psi and not leaking fuel anymore
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springs are overkill. konis(the best for the money), swaybars, bushings, tires, and some hawk hp pads.

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koukiKA240
Posts: 566
Joined: Tue May 25, 2004 5:18 am
Car: 1991 240sx KA-T

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i second that~Sam

Derf
Posts: 40
Joined: Mon Nov 01, 2004 1:29 pm

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Well I was under the car today and doing a lot of driving. I decided I need new tires for one. and it neesd new shocks and struts. thinking about when I do it to just spend the money and get a really good suspension.

what you guys think

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justmerging
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No sense in paying for parts twice. if you're gonna upgrade eventually I would say go for it. Just be aware that it will push you into street prepared class probably. I definately wouldn't touch the motor though cause that bumps you into street modified(unless you go with some serious power adder, ie turbo). Wheel time is definately the best mod you can do.

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eddiec
Posts: 966
Joined: Sun Dec 28, 2003 11:01 am
Car: 91 S13

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seat time, seat time and more seat time are the best thing for a/x.

if you want to improve the car then plan ahead with all the mods. find out what class you want to run in, DSP here. get the rule book and start modding. as everyone has said the best money spent is probably on tires, unless you want to run street tires. i started with brakes myself, no good going fast if you cant slow down. i finishing up my suspension work and plan on an engine build soon.

cheez80
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i agree with eddie here

before you do anything, bust out the rulebook and figure out what class you want to run. it'll save you lots of money in the long run.

Derf
Posts: 40
Joined: Mon Nov 01, 2004 1:29 pm

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yeah I plan to mod as much as possiable as the class allows. WAnt to have everything allowed in rulebook for that class

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nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

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so youre saying sts right? from what ive learned on here and read, you can get I/H/E but you need to use the stock cat, struts and springs, brake pads, fluid and lines, maybe a few other things, here:

http://moutons.org/sccasolo/

thats where people told me to go, i think i worked pretty good

SHIFTrl240
Posts: 544
Joined: Mon Jul 07, 2003 4:28 pm
Car: 1990 SR20 Sil-80
2009 Yamaha RoadStar Warrior
2017 Alfa Romeo Giulia Ti AWD
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tires and experience are the best modifications.

:: orion ::
Posts: 1483
Joined: Fri May 23, 2003 4:40 pm
Car: '96 240SX, with KA-T @ 12psi...
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nismofly wrote:so youre saying sts right?

...you need to use the stock cat, struts and springs, brake pads, fluid and lines, maybe a few other things...
Nismofly: Read the class rules for STS more closely.

You can use ANY spring and strut. ANY wheels less than 7.5" wide. ANY brake pads or rotors (not bigger brakes, that'll push you into STX)...but tire must be 140 treadwear or higher...etc, etc...

DSP is the next jump...and is very similar to STS, except you may find R-compound tires in DSP. In my area, DSP is great for a 240SX, not that many *real* DSP cars, nobody runs race tires. STS is very competitive...so DSP is my choice if I run the S13.

I'd do I/H/E, stiff springs (like RSR Race), KYB AGX shocks, and some good brake pads, like Axxis Ultimates. Then some 16X7.5 or 17X7.5 wheels with 225s on them...many people like Falken Azenis Sport in the 225/45-17 flavor for auto-x.

Now, seat time, seat time, seat time.

Spending more money on the car will not make you faster, but practice will.

I now TONS of guys with good auto-x cars that get KILLED every weekend b/c they CANNOT DRIVE. For example: A local guy runs a Mini Cooper S (John Cooper Works Edition even...) with race tires in SM with me when I race the S14 - And I KILL him. Mine is a bigger car, on street tires, etc...his car could do 5-6 seconds better than me on a 60-sec course, but he hasn't learned how to drive it yet. He has all the goodies, and ~$35k wrapped up in his weekend fun car...but he's slow.

My .02 - Brian

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nismofly
Posts: 12505
Joined: Sat Sep 04, 2004 3:16 pm
Car: 89 Nissan 240SX Hatch

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i was just generalizing the rules from what ive read

so okay ive got a set of 16x7.5 kosei k1s, i was however going to try to daily drive this car, i havent heard about azenis sports being much of a wet weather tire, but id like to find a great dry/wet tire that i can daily drive and still autocross, i know thats asking a lot but i cant afford two sets of tires right now and buy springs and struts at the same time. how would like the yoko es100 be for auto-x? also ive looked at rsr race springs but like i said same deal how are they with an agx on the street?

im planning on running every single autocross i can between the middle of may and the middle of august by the way so i hope i can get enough seat time doing that, as well as going to like a skip barber racing school, which im doing next summer, i know its not autocross but its still experience


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