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So i decided to Autocross mi fit

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Old Aug 10, 2010 | 09:51 PM
  #1  
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fjt
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From: El Paso, TX
So i decided to Autocross mi fit

well i have been always more attracted to drag racing.... until i bought this GE8.. My original plans where to make a K swap and race it but... till that gets done(if it ever gets done) i decided to have some fun with the car and its stock engine.
I have some friends that told me to autocross, that it is fun etc.... so i will give it a shot and start racing auto cross next season.. So the season out here starts in March which means i have 6 1/2 moths to prepare the car ..

The problem is.. where the hell do i start? I need you guys to point me out in the right direction as to where to look for the rule book, what should i look into spending money and what should i avoid..

So far my friends say i should stick in the ST class and that the car should do good there even vs other cars with times the power...

So i guess a very well tuned suspension + practice on my driving skills are the most important things...

Now what kintd of springs, spring loads should i look into and what can i do and cant do to run the ST class..
 
Old Aug 10, 2010 | 11:33 PM
  #2  
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Joined: May 2009
Posts: 161
From: Calgary, AB
Keeping in mind I'm pretty new to autocross. Sorry to throw the rule book at you, but it's always easiest to go to the source:
SCCA - Sports Car Club of America
Note: if the rules leave something out, then you cannot do it. Locally here people only start calling you out once you start placing well.
Another place to start maybe the Hawaii thread lower down as Raton for example has a fairly prepared car for ST, or send him a pm?

Driving school - you can take it to the next car and more than doing anything to the car you'll see return on investment. If we fully preppred our car the 89/90 CRX's will kick our butts in the hands of good drivers.
Autocross to Win (DGs Autocross Secrets) - The Driver
Purposeful seat time working on reading courses, finding and driving the line, developing skills like trail braking, looking 2 or 3 elements ahead etc.
I'm a geek, so to help understand some of this stuff and steepen the learning curve I've borrowed Going Faster!: Mastering the Art of Race Driving by Carl Lopez from one of the other club racers. It's for road courses, but it applies really well for autocross too. I've seen Ross Bentley's first Speed Secrets book too, and found it useful. You cannot learn racing from books; it's something you have to feel.

Tires and a good alignment to get some negative camber make a big difference as mentioned in the other thread. In ST you cannot use R comp's. GRM, Fasttrack, and Tirerack have some good articles on extreme performance summer tyres.
Bigger sway bars won't affect drivability on the street if it's your DD.
I was being told my stock suspension was underdamped by one of the local hotshoes though, so coilovers or some aftermarket dampers might be next. From what I understand it's always best to modify shocks and springs together so they are designed for eachother.
I've looked at Skunk 2 Pro C 's and the buddy club N+. T1R also makes a couple (A&J Racing is a forum sponser - wait for their sales) Not sure what's available for the GE's as I have a GD.
If you do your exhaust system make sure it's one of the quieter ones, so you don't get close to sound limits. Even in street touring the cars can be modified enough that driving to an event 500km away is something you don't want to do from what I understand.

Have fun, while the speeds aren't as high as road courses, the number of elements is much higher and as can be seen in the youtube video's for autocross it's rather violent even when you're smooth. Autocross seems to be a skill event, and takes some effort to do well in.
 
Old Aug 21, 2010 | 05:11 PM
  #3  
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From: Mililani, Hawaii
Originally Posted by fjt
well i have been always more attracted to drag racing.... until i bought this GE8.. My original plans where to make a K swap and race it but... till that gets done(if it ever gets done) i decided to have some fun with the car and its stock engine.
I have some friends that told me to autocross, that it is fun etc.... so i will give it a shot and start racing auto cross next season.. So the season out here starts in March which means i have 6 1/2 moths to prepare the car ..

The problem is.. where the hell do i start? I need you guys to point me out in the right direction as to where to look for the rule book, what should i look into spending money and what should i avoid..

So far my friends say i should stick in the ST class and that the car should do good there even vs other cars with times the power...

So i guess a very well tuned suspension + practice on my driving skills are the most important things...

Now what kintd of springs, spring loads should i look into and what can i do and cant do to run the ST class..
First read this-
Getting Started in Autocross

Here is a video of autocrossing
http://www.vimeo.com/12067348

There are many organizations that run autocross events across the country.

SCCA is one of the most common but check with your local area or region.
SCCA.org is a good place to check out.

If you pick SCCA events then every car is classed when competing with similar cars and assigned a PAX handicap based on national level competition for that class.

A stock Fit or Fit sport will run in H Stock class which is the most basic class for four seat cars with minimal power. You can use any front swaybar, any drop in air filter, any cat back exhaust, any alignment using stock parts, any engine oil or spark plugs but you must use stock sized wheels- same diameter and width as stock but within about 0.25" on offset. Usually best tires is R compound race tires on stock wheels like Hoosier A6 or Kumho V710 but they are expensive and cannot be run on the street or you will wear them out. You can bring street wheels and tires and separate race wheels and tires to the events and change wheels there.

ST or Street Touring class is more competitive and allows for many suspension upgrades but you must run on street tires like Bridgestone Extreme summer tires like the RE-11 or Dunlop Direzza Star Spec. There are limits to the wheel sizes but it's more flexible than stock wheels.

It is always best to learn autocross on a stock car first then make changes. As a novice it is likely you will be the limiting factor for how well you do rather than your car being the limit.

The rules for SCCA are very strict so read the rule book. You cannot make changes like upgrade the shift knob and stay in stock class, you need to leave everything alone and only do the upgrades that are legal within the class you want to compete in. The exception would be simple cosmetic changes that don't give you any performance advantage.

You'll need race 8" numbers for each side (magnetic) and class 4" letters.


Note letters should be HS not HM (error)
More reading
https://www.fitfreak.net/forums/fit-...ass-rules.html
 

Last edited by MINI-Fit; Aug 21, 2010 at 06:27 PM.
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