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Old 03-07-2012, 09:43 AM   #1
mchnbuilt
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Post your autocross setups

So autocross season here starts up this week. I have just come back into work and will be trying to dial in my suspension this season. I want to know what y'all are running and how you like it and what you'd like to change. I know it will be different for each driver since no one drives the same. Btw I have a 5th gen.

My current setup is koni ground controls 450f 500r. And I will be installing my complete energy suspension in the near future hopefully. I have taken her out to autocross before and the ass end is way to happy in the Slalom, but under wide turns sometimes it will have slight under steer but sometime some oversteer, depending on how I'm taking the turn. Oversteer too hot in the entrance. Under steer ifi push too hard in the turn.

So feel free to post your setups and make suggestions I might like.
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Old 03-11-2012, 03:37 PM   #2
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no one on here auto-x there car.

And i should add when i get the money together i will be getting some 17X8 +35 and putting some 235/40/17s on them
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Old 03-11-2012, 04:21 PM   #3
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you have oversteer because your rear spring rate is higher than the front, and the rear of the car is pretty light due to our terrible weight distribution. Switch the springs front to rear and it will feel more balanced. You can also soften up the rear shocks which will help the rear end stay a little more settled. Everything else sounds like you need to adjust your driving style to better fit the car's characteristics

My setup:
H&R race springs (400f/350r)
KYB AGX
stock swaybars
17x7.5 DRAG wheels with 235/40/17 Toyo R888's
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Old 03-11-2012, 04:28 PM   #4
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On street tires I would (personally) aim for something like a 600-800lb front spring depending on how aggressive you want it. 500lb in the back is probably ok, you could definitely raise it though.

On sticky tires you would probably want something more like 800-1000lbs in the front on a stock weight car.

Anyway, messing with suspension can make for a loose car, have fun with it. Better than it being boring to drive.....



Just mild speculation, though, don't really autocross the Prelude.
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Old 03-12-2012, 07:54 AM   #5
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see thats what i was thinking of the front spring rates, but there was a local guy around here who autocrossed his lude and said 450 500 or 450 550. his name on here was 00mugenlude i think, his name was jeff. he doesnt race his lude anymore tho just his s2k. i guess it was a good starting point as far as spring rates. now i've seen people say their lude understeered stock and some that say it oversteered stock. my oversteered. im asuming that just driving style right there or some people just not knowing correctly.

i've seen people say that 400 and 500s werent streetable, but i think it rides beautifully on those rates so ill probably up it to somewhere in the vasinity of 6-700f and 5-550r.

as for tires im planing on keeping them street, but the stickiest street tires i can find. Im leaning towards the dunlop z1 star specs, but nothings final yet. if i did go race, you already know it would be hoosiers, but that day is a whiles away.

besides that i know i need more experience and to become a better driver. i had a 5 second improvement over my last 5 runs tho. was pretty happy with that.
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Old 03-20-2012, 09:07 AM   #6
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An ambitious person could probably fit a 245/40 RS3 on the front of the car without too much work. Otherwise, 235 AD08/Z1 isn't a bad choice
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Old 03-24-2012, 08:53 AM   #7
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I plan on running 245s sometime in the future but not quite yet. gonna see how 235s do, before i go and drop some decent money on expensive wheels. i have a set in mind for the 235s and there bout 200 a piece not too bad.
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Old 04-11-2012, 09:15 AM   #8
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I'm anxious to see how I do this year. I do it more for fun than to be competitive.

225/45R17 Nitto NT01's
17x8 +38 Evo wheels
Function/Form Type 1 coilovers with a fair preload
Progress rear sway bar with adjustable endlinks
Front strut tower bar
Poly sway bar mounts up front

I want to get stiffer springs in the near future, something in the 7-800F and 600R range.
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Old 04-21-2012, 09:37 AM   #9
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Yeah, not really any classes where a NT01 is a good tire.

Not any classes where the Prelude is a good car either :P
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Old 04-27-2012, 09:59 AM   #10
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Quote:
Originally Posted by mchnbuilt View Post
see thats what i was thinking of the front spring rates, but there was a local guy around here who autocrossed his lude and said 450 500 or 450 550. his name on here was 00mugenlude i think, his name was jeff. he doesnt race his lude anymore tho just his s2k. i guess it was a good starting point as far as spring rates. now i've seen people say their lude understeered stock and some that say it oversteered stock. my oversteered. im asuming that just driving style right there or some people just not knowing correctly.

i've seen people say that 400 and 500s werent streetable, but i think it rides beautifully on those rates so ill probably up it to somewhere in the vasinity of 6-700f and 5-550r.

as for tires im planing on keeping them street, but the stickiest street tires i can find. Im leaning towards the dunlop z1 star specs, but nothings final yet. if i did go race, you already know it would be hoosiers, but that day is a whiles away.

besides that i know i need more experience and to become a better driver. i had a 5 second improvement over my last 5 runs tho. was pretty happy with that.
Have we met?

I was running 450/450 on OTS koni/GC and the car was great, although with a little snap oversteer on cold tires. I was, however, on race rubber and that can change a number of things.

I'd have to know more about the car and your driving style to really give you any productive advice, but the Prelude makes for a fun autocrosser with a little tweaking.

I have the GPW s2k that I'm running now. I installed Motons over the winter break and I hope to get them dialed in sooner than later. I learned a lot at a recent event but Pungo doesn't give me much opportunity to get a feel for the car.

I'll be out there on the 6th, look me up.

Wow, I don't think I've posted here in a few years. haha
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Old 04-30-2012, 03:33 PM   #11
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I started out with 450lb front springs, but having done a few calculations on a stock-ish weight car I think that's really soft.
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Old 05-02-2012, 05:08 AM   #12
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450 certainly isn't the stiffest you can go, but I ran on 400 lb/in for years and it was great. I thought it was pretty good for a street tired car. I wound up doubling my spring rates when I went to r-compounds, though.

Although I do have an older car, I also run softer in the rear. I've rarely (if ever?) heard of someone who knows what they're doing running a significantly higher rear rate in a prelude like the civics do. My theory as to why is that the prelude has a longer wheel base than the civics.
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Old 05-04-2012, 10:21 AM   #13
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I run my 87 DX in the SMF class. Runnin CRX coilover sleeves up front w/450lb springs, stock springs out back w/1.25 coils cut from the top. Stock shocks. 14" 195/60 Sumitomos for tires. The reason I'm in SMF is because of the Delta cam n Bisi adj cam gear. I can actually hang, timewise, w/higher hp cars only due to the handling. Setup right now is pretty balanced, especially in slaloms, leaning toward slight oversteer...
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So that means what, 2/3rds of the population of Montana drive Preludes by my math.
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Old 06-04-2012, 05:46 PM   #14
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First autocross this Saturday. I will be bone stock suspension-wise. Only thing that will really help is the LSD. Which unfortunately puts me into some stupid class like Street Prepared where I have no chance lol. Ah well....
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Old 06-04-2012, 06:33 PM   #15
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First autocross this Saturday. I will be bone stock suspension-wise. Only thing that will really help is the LSD. Which unfortunately puts me into some stupid class like Street Prepared where I have no chance lol. Ah well....
You wont be competative until you get some seat time anyways, just go out and have some fun. Don't worry about your times, just get some experience
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Old 06-05-2012, 11:47 AM   #16
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You wont be competative until you get some seat time anyways, just go out and have some fun. Don't worry about your times, just get some experience
Yeah I'm not worried about times. I know my first few runs will be awful, but hopefully I can improve a lot.
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Old 06-06-2012, 08:21 PM   #17
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Got my new helmet in today. GForce Pro Eliminator.

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Old 06-12-2012, 02:15 PM   #18
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Nice helmet. GForce has good stuff, especially for the money.
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Old 06-12-2012, 04:53 PM   #19
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Nice helmet. GForce has good stuff, especially for the money.
Yeah, I am pleased with it. Although it is a little big for the car. I have to have my head in the sunroof lol.

Didn't do as well as I had hoped on Sunday, but I definitely learned a lot. I have to get used to driving with an LSD; it understeers A LOT when I'm on the throttle haha.

Does anyone know about the STF class? Preludes aren't in any of the Street Touring classes, but based on the other cars/allowable mods, it seems like it would fit in. It's weird how slow of a class it is...
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Old 06-12-2012, 08:17 PM   #20
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I don't know of the preludes being classed competitively in any of the new ST classes. I chased ST for years but the car is too heavy to compete against the much lighter civics, even though it has better driving dynamics. In the new classes I believe the older preludes are still against the civics (although I have often considered that the 2nd gen might be competitive against them) and the newer ones are in whatever STX became and are facing against WRX's and the like.
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Old 06-13-2012, 06:20 AM   #21
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Well I thought that was the reason for STF, but I'm not sure. The rules are kind of vague about whether the Prelude would be in STF or not. I find it strange that the multiplier is less than HS...
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Old 06-25-2012, 04:12 PM   #22
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Ill be back in action first sunday in july with the new setup

17X9 235/40/17 Yokohama S-Drives
BC Racing Coilovers 12K Front 10K Rear
Full Poly Bushings
Type-S Strut Bar

Ill Post how it goes and put up videos if there are any
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Old 06-25-2012, 08:02 PM   #23
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This past Sunday went great. Knocked three seconds off my time each run! (57 down to 51) I felt much more comfortable with the car and was able to make adjustments throughout the day. Can't wait to get back out there in a couple of weeks.
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Old 07-04-2012, 09:15 AM   #24
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As far as STF goes, the Preludes would be in STF...I thought about running STF myself with my 2g. IIRC no R-compound tires to worry about...but then Id have to put a stock cam back in it, with or without the adjustable cam gear...
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Aren't there like 3 people in Montana?

So that means what, 2/3rds of the population of Montana drive Preludes by my math.
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Old 08-14-2012, 08:31 PM   #25
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Have a test and tune this weekend, hoping to get at least 12 runs in. I have an ST rear sway bar on the way, hopefully it will get here in time so I can test it out.
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