Autocrossers: Check in here! - Page 7

honda93 · 01-21-2007, 10:25 PM

OK Greg,

Give it up before this gets locked or something stupid like that. Besides, he probably lives in CA. If you're willing to pay for him to come out just to beat him, how about instead you pay for my plane trip to Kansas in September? Jeff said he'd get my car out there so I could just fly in, race (and work), and get back to school. :)

Mario

bossman · 01-22-2007, 05:35 PM

I plan on giving a go when I get back but I do have a few questions...

1) I don't like being restricted by rules on what i can do to my car,so what am I allowed to do or what class could I compete in to run "what I brung"?

2)I'm pretty sure there is an autox course close to me(Central TX) but is it expensive?

3)What are the first things I should get for my car if I decide to do it alot?
I already have I/H but do I need anything else like safety gear or anything like that?

bossman · 01-22-2007, 05:37 PM

And for the record,I nevr said or thought I could be everyone or anyone for that matter,but I do think that I will be better than most ppl expect for a "novice"

***Janizary*** · 01-22-2007, 06:01 PM

Start with the official SoloII rules. The 'rules', as it were, are listed for saftey, what class your car would be in by type, year, and modifications. A good place to freshen your knowledge on the basics.

Someone have the 2007 link handy? Additionally, some Auto-X clubs may use variations or other rules, etc. (either less or more restrictive). I've got my last 2006 link for national, but not sure if any changes were made yet.

***Highrev1*** · 01-22-2007, 07:34 PM

A pretty much RUn what you brung class would be Street Modified, but you could also see if you fit into STS class. Either way the 06SI will nto be truly competitive, so ust go to have fun.
It usually cost 30-40 bucks.
If you really get into it you can learn to setup your car to be more competitve. But for the first few you don't need much, If you start to do it more I would say the only thing would be a helmet so you don't have to borrow a club helmet, somtimes they smell :)

THis was written by TONY, you can check all of these out.
http://www.autox4u.com/check.htm

http://www.sfrscca.org/solo2/faq/

http://www.tirerack.com/features/solo2/handbook.htm

bossman · 01-23-2007, 07:43 AM

Quote:

Originally Posted by Highrev1

A pretty much RUn what you brung class would be Street Modified, but you could also see if you fit into STS class. Either way the 06SI will nto be truly competitive, so ust go to have fun.
It usually cost 30-40 bucks.
If you really get into it you can learn to setup your car to be more competitve. But for the first few you don't need much, If you start to do it more I would say the only thing would be a helmet so you don't have to borrow a club helmet, somtimes they smell :)

THis was written by TONY, you can check all of these out.
http://www.autox4u.com/check.htm

http://www.sfrscca.org/solo2/faq/

http://www.tirerack.com/features/solo2/handbook.htm

Thx for the response,I read the links and found them useful.But it looks like I'll have to keep my car stock just be in a class that I have a chance in...that's no fun.One question that pops into mind is that you suggested I get a helmet...where do I get one that would be ok to use for AutoX?How much do they cost anyways.I figure I'll have to buy one anyways for the strip.

honda93 · 01-23-2007, 01:22 PM

Quote:

Originally Posted by bossman

One question that pops into mind is that you suggested I get a helmet...where do I get one that would be ok to use for AutoX?How much do they cost anyways.I figure I'll have to buy one anyways for the strip.

Open-face motorcycle helmets (Snell approved of course) are popular. There is one from a company called HJC that shouldn't run more than $100.

I just couldn't borrow helmets, especially on hot summer days when people sweat profusely after wearing them for 10 minutes and then giving them to you. No thanks.

1st HI 06 Si · 01-29-2007, 03:07 PM

I briefly looked at the rules for 2007 and as far as the Si goes and mods to it, there are very few it any changes. And for a Novice driver I don't think there is any thing that would matter.

I am still close to a novice driver my self. I have been though 4 events here in Hawaii now. I grew up driving nice winding country roads and have always though my self to be a good and competent driver, not excellent but better than many other on the road. Boy was my First AutoX a humbling experience. This is what I took from it, you can be a very good daily driver, know what your car can do, more or less, be able to take good lines on country roads, know where you think your limits of your car are, but step on to an auto x track with guys that have been doing it for years and its a whole new world.

Our pool of drivers here in Hawaii is smaller than many place in the US but we draw between 100 and 130(cap) people per event. We are lucky to have the womans national champ for SOLO II (two years running and sorry cant rember what class) and several other drivers that compete and do well in the nationals every year. We also have several divers that do very well at out events but chose to not go and race on the national level.

If you are starting out in auto x (bossman) I would highly recommend getting as much help as you can. At our events Novice drivers (first event) can have a coach in the car with them. take advantage of this they do know more than you and will be bale to help if you listen. Also if your events offer "fun runs" and you want to get better use them. Also at our events you can have other driver ride along with you in the fun runs, use this time to see if the other top drivers will ride with you and give you tips and advice. I try to do this at every event we have.

I am now consistently placing second in the GS class behind a mini cooper s that is running R comp tires and this guy is an excellent driver. I am now also placing top 30 at our events with the PAX adjusted times. I have ALOT to learn still and I am planning on staying on street tires until I have a skill level that justifies R comp.

So no matter how good you think you are, if this is your first event be prepared to be humbled. Most people at the Auto X events are really nice people that are just there to have a good time, and most of the time are more than willing to help you and give you advice, take advantage of it. And remember to have fun.

1st HI 06 Si · 01-29-2007, 03:23 PM

Ok so now I have a few questions for the experienced guys in here.

I have been running G Stock class and I am more than likely going to continue because the Si is a very well set up car for stock class and can be competitive. One of my areas that I am working on is breaking coming into corners. I was starting a little to early mostly because I was not breaking hard enough.

I was able to get 10 fun runs in at the last event (yesterday) and worked on this quite a bit along with my lines. I know that I can change my pads and still remain stock class, what is a good recommended pad? My car is 95% used for auto cross so noise is not of that much concern.

Also if any of you guys are running stock class with stock tires, I have the Pilot MX that came on the car, what pressures are you running at that you have found works well? I used a 37 psi front and a 34 PSI rear yesterday that worked well for me.

Let me know what you guys think. Thanks

honda93 · 01-30-2007, 02:03 PM

I have been running G Stock class and I am more than likely going to continue because the Si is a very well set up car for stock class and can be competitive.

Locally the Si will be an OK autocrosser, not Nationally, at least not without spending a ton of time and money on shock development. Being you live in Hawaii, unless you hop on a plane like Jennifer Lee and get a co-drive on the mainland, you aren't running National events anyway with that car!

One of my areas that I am working on is breaking coming into corners. I was starting a little to early mostly because I was not breaking hard enough.

I was able to get 10 fun runs in at the last event (yesterday) and worked on this quite a bit along with my lines. I know that I can change my pads and still remain stock class, what is a good recommended pad? My car is 95% used for auto cross so noise is not of that much concern.

The new Civic, in my experience, doesn't like to be trail-braked into corners, regardless if it is the Si or my LX. Some of this may be attributed to the EBD feature in the braking system. Regardless, get the braking done in a straight line and allow those front tires to work more efficiently for acceleration out of the corner as well as dealing with the act of cornering itself... ESPECIALLY because you are on the OEM tires. In other words, save your money on brake pads and put it towards the tire fund.

Also if any of you guys are running stock class with stock tires, I have the Pilot MX that came on the car, what pressures are you running at that you have found works well? I used a 37 psi front and a 34 PSI rear yesterday that worked well for me.

If that's what you're going to use, then I'd go up to 40 in the front and 55 in the rear. The car needs to rotate.

Also, do you have an autocross-specific alignment?

Anthony "Mario" Crea

1st HI 06 Si · 01-30-2007, 02:23 PM

Jennifer Lee was saying that at the national event her dad was running as well and the car he had to beat was a Si. But it was set up for auto Cross.

I dont have an auto x specific alignment, what is a good set up to start at?

This spring we are going to be moving back to the mainland, to the NW and so I will be participating in Auto X up in that area. Not that I am good enough to go to nationals, but some day if I am it would be good fun. Even if I dont win or not even really in contention for the top spots, to be able to see all those drivers would be a lot of fun.

I will try that set up for the PSI and see how it works for me, but you are right the Si does not like to be trail braked into corners, if you are on the brakes and going into a corner your to push it, on the all seasons any way.

I had Jennifer ride with me at the last event and one thing she mentioned that I should do and she felt I was ready to try and the car was set up well for it was left foot braking. Is there any good resource that I could read up on this more before I start using it.

BigDog · 01-30-2007, 02:36 PM

Tony makes good points, especially on braking and brake pads. If you're not going to go to r-compounds, I would suggest getting a set of the Falken Azenis or, for a few dollars more, the Advan Neovas. Either tire in the 225/45-17 size will wake the car up dramatically. I'm running the 225/50-16 Azenis on my stock, steel LX wheels for HS and they do just fine as daily drivers and they are a lot of fun on course.

I do take some umbridge with Tony's advice on pressures. I run 41F, 34R on my Azenis and I get the car to rotate. The following is a quote lifted from Chris Shenefield on his RedShift Motorsports site:

"If you run really high pressures to get the car to rotate, you will find the car will have more of a tendency to snap oversteer. Running lower pressure as a means of getting rotation will afford less "snappiness" at the limit because the tire is softer. Furthermore, the lower pressures in back allow a slightly higher slip angle at all lateral acceleration levels; so the tire has more lateral movement throughout the entire turning sequence (from low g to high g), and that's usually what you are after. High pressures induce oversteer by actual slip of the tread (oversteer), which is a little harder to control and can catch you off guard, especially on by fast courses."

So yes, the higher pressure in the back will get you some rotation, but a lower pressure will get you a more controlled rotation. This is a contradiction to normal autocross theory, but a lot of fast guys are using lower pressures. If you get a chance to test, try both. Your driving style might also dictate which pressure theory works for you. I'm still a hack, so I prefer lower pressures to control spins. I had some real doozies in the old STS car.

TexasK20Z · 01-30-2007, 02:51 PM

Name: Casey
Car: 2007 Civic Si sedan (bone stock for now)
Race affiliation: North Texas S2000 Owners
Brief: I have been racing since I was 19 when I bought my 99 Prelude (so that makes 8 years now)... I don't get to race as much as I would like (life gets in the way... and rubber ain't free

) but will be trying to make all 6 of the S2K events this year (all on street rubber).
Need: A second set of wheels to mount some racing "street" tires on instead of using my daily driver tires...

Now... I have to spend some time reading through all of the auto-x info for these cars....

***Highrev1*** · 01-30-2007, 07:39 PM

[quote=BigDog]The following is a quote lifted from Chris Shenefield on his RedShift Motorsports site:
"If you run really high pressures to get the car to rotate, you will find the car will have more of a tendency to snap oversteer. Running lower pressure as a means of getting rotation will afford less "snappiness" at the limit because the tire is softer. Furthermore, the lower pressures in back allow a slightly higher slip angle at all lateral acceleration levels; so the tire has more lateral movement throughout the entire turning sequence (from low g to high g), and that's usually what you are after. High pressures induce oversteer by actual slip of the tread (oversteer), which is a little harder to control and can catch you off guard, especially on by fast courses."
QUOTE]

Like that guy knows what he's talking about HA.

I know when I ran GS in teh si I had the 245's up front withthe 225's in the rear and ran umm around 14psi rear to help rotation. We found that that was almost ideal, and it just couldn't keep up withthe MINI's.

1st HI 06 Si · 01-30-2007, 08:36 PM

Um, not positive but doesn't that tire size push you out of stock class. I though you had to be with in a few mm of the stock size?

***Highrev1*** · 01-30-2007, 08:44 PM

Wheels do Tires are R compunds in Stock class :)

BigDog · 01-30-2007, 09:45 PM

Quote:

Originally Posted by 1st HI 06 Si

Um, not positive but doesn't that tire size push you out of stock class. I though you had to be with in a few mm of the stock size?

As Greg tried to say, but he couldn't put the beer down long enough to type a coherent sentence :) , the wheels must remain "stock" in size but the tires are free.

Stock wheels means stock diameter and width and the offset must be within 1/4" (about .6mm). Type and weight are free. We will be running 245/45-16 tires in front and 225/50-16 in the rear when we go to r-comps. This on a Rota 16x6.5 wheel with a 47 offset which is 2mm from stock.

***Highrev1*** · 01-30-2007, 10:01 PM

The man is a mind reader!! Acutally its Pain medication tonight, root canal FTL

Why not go down to a 40 offset to get as much clearance and widen the track as much as possible. And acutally you could use the 47 in the rear to try to help the rear come around as much as possible.

honda93 · 01-30-2007, 11:58 PM

Quote:

Originally Posted by Highrev1

Wheels do Tires are R compunds in Stock class :)

OMG

It's like having a conversation with Yogi Berra.

Anthony "Mario" Crea

130R · 01-31-2007, 12:06 AM

Quote:

Originally Posted by honda93

Second, I don't think the 2006 Si that finished so low in the results (Sam Karp and his codriver) is being driven to its potential in such a tough GS; I'd be interested to see where Greg and Chris would have been with the car.

Anthony "Mario" Crea
NNJR-SCCA

Wow, thanks for that. How would you know Anthony? Have we ever met for you to critique my driving? Where you at Nationals to see how the site behaves?

I'll admit, I'm not the best. I'm a mid-pack driver now at the best, so I will agree with you! I've only been doing this seriously for 3 years and this was my first year on R-comps. I have a lot to learn. I just don't agree with you saying it because you have no backing.

At least I had the balls and effort to show up with the car at multiple BIG events this year. Not taking anything away from Greg or Chris, but I performed very well at locals this year and sucked it up at Tour's. Don't put any stock into what the car or drivers did locally. Chris' past achievements precede him, but this car and tire was new game for him.

Our (Ben and I) nationals results was a little disappoint as I threw away a few spots with cones (hit stupid cones on both days fastest runs) and Ben was too nervous to even walk straight. Ben also puts very little effort into walking course (he walked west course twice). He learned the hard way with all of his DNF's. I was honestly expecting us in the mid 20's with low 20's....high teens as our stretch. We finished a little behind MY goal but learned a lot about the site this year and now that I have to set the car up a little tighter at my home events to have it behave well at HPT. We set the car up as loose as we could at Miller Park (a site many said is nearly identical to HPT in terms of grip) and were not expecting the problems with oversteer at HPT. We had rear pressures as low as 17psi in the warm-up and were still caught out. It was too low for the day-of-the-event though as we ran 3rd heat with good rubber down and right after the sand was cleared off line (which is huge since we run a slightly different line than the thoundands of spec-MINI's in the class). Next year we (or I) would come more prepared (as in fresh rear tires that grip, not heat-cycled out junkers that let the car rotate).

With that said, I am hoping to get out of the car for 2007. With the cost of custom shocks and how many tires we would eat, it would be less expensive to buy a 94-96 Miata R and run it in ES. As long as I can get the cash for the Miata, the Si will become a really expensive (as in $529 a month) daily driver.

PS-This is a really good thread. I just noticed it when paging around. Good info. I will keep my eye on it to see if I can contribute any more info.

I wish the best to you guys running nationally in HS next year. You are going to have a tough fight. I hope it turns out better than my attempt in GS.

01-22-2007, 06:01 PM	#124 (permalink)
*Janizary* Minister of Discord Join Date: Nov 2005 Location: Sith Ferret dojo Posts: 6,308 Gas thread Nazi iTrader: 0 / 0%	Start with the official SoloII rules. The 'rules', as it were, are listed for saftey, what class your car would be in by type, year, and modifications. A good place to freshen your knowledge on the basics. Someone have the 2007 link handy? Additionally, some Auto-X clubs may use variations or other rules, etc. (either less or more restrictive). I've got my last 2006 link for national, but not sure if any changes were made yet. __________________ • Official BMW 1-Series Thread • DX/LX/EX Gas Mileage Thread • Civic Si Gas Mileage Thread • Civic Hybrid Gas Mileage Thread Last edited by Janizary; 01-22-2007 at 06:07 PM.

01-21-2007, 10:25 PM	#121 (permalink)
honda93 Senior Member Join Date: Oct 2005 Location: Property Tax Hell... NJ Age: 33 Posts: 835 iTrader: 2 / 100%	OK Greg, Give it up before this gets locked or something stupid like that. Besides, he probably lives in CA. If you're willing to pay for him to come out just to beat him, how about instead you pay for my plane trip to Kansas in September? Jeff said he'd get my car out there so I could just fly in, race (and work), and get back to school. :) Mario

01-22-2007, 05:35 PM	#122 (permalink)
bossman Senior Member Join Date: Oct 2006 Location: IN MY CAR Age: 27 Posts: 558 iTrader: 0 / 0%	I plan on giving a go when I get back but I do have a few questions... 1) I don't like being restricted by rules on what i can do to my car,so what am I allowed to do or what class could I compete in to run "what I brung"? 2)I'm pretty sure there is an autox course close to me(Central TX) but is it expensive? 3)What are the first things I should get for my car if I decide to do it alot? I already have I/H but do I need anything else like safety gear or anything like that?

01-22-2007, 05:37 PM	#123 (permalink)
bossman Senior Member Join Date: Oct 2006 Location: IN MY CAR Age: 27 Posts: 558 iTrader: 0 / 0%	And for the record,I nevr said or thought I could be everyone or anyone for that matter,but I do think that I will be better than most ppl expect for a "novice"

01-22-2007, 07:34 PM	#125 (permalink)
*Highrev1* HR1!!!!! Join Date: Mar 2006 Location: DIRTYJERZ Age: 28 Posts: 3,492 Greg@Redshiftmotorsports.com iTrader: 1 / 100%	A pretty much RUn what you brung class would be Street Modified, but you could also see if you fit into STS class. Either way the 06SI will nto be truly competitive, so ust go to have fun. It usually cost 30-40 bucks. If you really get into it you can learn to setup your car to be more competitve. But for the first few you don't need much, If you start to do it more I would say the only thing would be a helmet so you don't have to borrow a club helmet, somtimes they smell :) THis was written by TONY, you can check all of these out. http://www.autox4u.com/check.htm http://www.sfrscca.org/solo2/faq/ http://www.tirerack.com/features/solo2/handbook.htm

01-29-2007, 03:07 PM	#128 (permalink)
1st HI 06 Si Senior Member Join Date: Jan 2007 Location: Pearl City Hawaii Posts: 132 Jiah Quayle iTrader: 0 / 0%	I briefly looked at the rules for 2007 and as far as the Si goes and mods to it, there are very few it any changes. And for a Novice driver I don't think there is any thing that would matter. I am still close to a novice driver my self. I have been though 4 events here in Hawaii now. I grew up driving nice winding country roads and have always though my self to be a good and competent driver, not excellent but better than many other on the road. Boy was my First AutoX a humbling experience. This is what I took from it, you can be a very good daily driver, know what your car can do, more or less, be able to take good lines on country roads, know where you think your limits of your car are, but step on to an auto x track with guys that have been doing it for years and its a whole new world. Our pool of drivers here in Hawaii is smaller than many place in the US but we draw between 100 and 130(cap) people per event. We are lucky to have the womans national champ for SOLO II (two years running and sorry cant rember what class) and several other drivers that compete and do well in the nationals every year. We also have several divers that do very well at out events but chose to not go and race on the national level. If you are starting out in auto x (bossman) I would highly recommend getting as much help as you can. At our events Novice drivers (first event) can have a coach in the car with them. take advantage of this they do know more than you and will be bale to help if you listen. Also if your events offer "fun runs" and you want to get better use them. Also at our events you can have other driver ride along with you in the fun runs, use this time to see if the other top drivers will ride with you and give you tips and advice. I try to do this at every event we have. I am now consistently placing second in the GS class behind a mini cooper s that is running R comp tires and this guy is an excellent driver. I am now also placing top 30 at our events with the PAX adjusted times. I have ALOT to learn still and I am planning on staying on street tires until I have a skill level that justifies R comp. So no matter how good you think you are, if this is your first event be prepared to be humbled. Most people at the Auto X events are really nice people that are just there to have a good time, and most of the time are more than willing to help you and give you advice, take advantage of it. And remember to have fun.

01-29-2007, 03:23 PM	#129 (permalink)
1st HI 06 Si Senior Member Join Date: Jan 2007 Location: Pearl City Hawaii Posts: 132 Jiah Quayle iTrader: 0 / 0%	Ok so now I have a few questions for the experienced guys in here. I have been running G Stock class and I am more than likely going to continue because the Si is a very well set up car for stock class and can be competitive. One of my areas that I am working on is breaking coming into corners. I was starting a little to early mostly because I was not breaking hard enough. I was able to get 10 fun runs in at the last event (yesterday) and worked on this quite a bit along with my lines. I know that I can change my pads and still remain stock class, what is a good recommended pad? My car is 95% used for auto cross so noise is not of that much concern. Also if any of you guys are running stock class with stock tires, I have the Pilot MX that came on the car, what pressures are you running at that you have found works well? I used a 37 psi front and a 34 PSI rear yesterday that worked well for me. Let me know what you guys think. Thanks

01-30-2007, 02:03 PM	#130 (permalink)
honda93 Senior Member Join Date: Oct 2005 Location: Property Tax Hell... NJ Age: 33 Posts: 835 iTrader: 2 / 100%	I have been running G Stock class and I am more than likely going to continue because the Si is a very well set up car for stock class and can be competitive. Locally the Si will be an OK autocrosser, not Nationally, at least not without spending a ton of time and money on shock development. Being you live in Hawaii, unless you hop on a plane like Jennifer Lee and get a co-drive on the mainland, you aren't running National events anyway with that car! One of my areas that I am working on is breaking coming into corners. I was starting a little to early mostly because I was not breaking hard enough. I was able to get 10 fun runs in at the last event (yesterday) and worked on this quite a bit along with my lines. I know that I can change my pads and still remain stock class, what is a good recommended pad? My car is 95% used for auto cross so noise is not of that much concern. The new Civic, in my experience, doesn't like to be trail-braked into corners, regardless if it is the Si or my LX. Some of this may be attributed to the EBD feature in the braking system. Regardless, get the braking done in a straight line and allow those front tires to work more efficiently for acceleration out of the corner as well as dealing with the act of cornering itself... ESPECIALLY because you are on the OEM tires. In other words, save your money on brake pads and put it towards the tire fund. Also if any of you guys are running stock class with stock tires, I have the Pilot MX that came on the car, what pressures are you running at that you have found works well? I used a 37 psi front and a 34 PSI rear yesterday that worked well for me. If that's what you're going to use, then I'd go up to 40 in the front and 55 in the rear. The car needs to rotate. Also, do you have an autocross-specific alignment? Anthony "Mario" Crea

01-30-2007, 02:23 PM	#131 (permalink)
1st HI 06 Si Senior Member Join Date: Jan 2007 Location: Pearl City Hawaii Posts: 132 Jiah Quayle iTrader: 0 / 0%	Jennifer Lee was saying that at the national event her dad was running as well and the car he had to beat was a Si. But it was set up for auto Cross. I dont have an auto x specific alignment, what is a good set up to start at? This spring we are going to be moving back to the mainland, to the NW and so I will be participating in Auto X up in that area. Not that I am good enough to go to nationals, but some day if I am it would be good fun. Even if I dont win or not even really in contention for the top spots, to be able to see all those drivers would be a lot of fun. I will try that set up for the PSI and see how it works for me, but you are right the Si does not like to be trail braked into corners, if you are on the brakes and going into a corner your to push it, on the all seasons any way. I had Jennifer ride with me at the last event and one thing she mentioned that I should do and she felt I was ready to try and the car was set up well for it was left foot braking. Is there any good resource that I could read up on this more before I start using it.

01-30-2007, 02:36 PM	#132 (permalink)
BigDog Senior Member Join Date: Jan 2007 Location: SoCal Posts: 106 Curt iTrader: 0 / 0%	Tony makes good points, especially on braking and brake pads. If you're not going to go to r-compounds, I would suggest getting a set of the Falken Azenis or, for a few dollars more, the Advan Neovas. Either tire in the 225/45-17 size will wake the car up dramatically. I'm running the 225/50-16 Azenis on my stock, steel LX wheels for HS and they do just fine as daily drivers and they are a lot of fun on course. I do take some umbridge with Tony's advice on pressures. I run 41F, 34R on my Azenis and I get the car to rotate. The following is a quote lifted from Chris Shenefield on his RedShift Motorsports site: "If you run really high pressures to get the car to rotate, you will find the car will have more of a tendency to snap oversteer. Running lower pressure as a means of getting rotation will afford less "snappiness" at the limit because the tire is softer. Furthermore, the lower pressures in back allow a slightly higher slip angle at all lateral acceleration levels; so the tire has more lateral movement throughout the entire turning sequence (from low g to high g), and that's usually what you are after. High pressures induce oversteer by actual slip of the tread (oversteer), which is a little harder to control and can catch you off guard, especially on by fast courses." So yes, the higher pressure in the back will get you some rotation, but a lower pressure will get you a more controlled rotation. This is a contradiction to normal autocross theory, but a lot of fast guys are using lower pressures. If you get a chance to test, try both. Your driving style might also dictate which pressure theory works for you. I'm still a hack, so I prefer lower pressures to control spins. I had some real doozies in the old STS car.

01-30-2007, 02:51 PM	#133 (permalink)
TexasK20Z Senior Member Join Date: Dec 2006 Location: Useless, TX Age: 28 Posts: 902 Yes... they are NEON ORANGE! iTrader: 0 / 0%	Name: Casey Car: 2007 Civic Si sedan (bone stock for now) Race affiliation: North Texas S2000 Owners Brief: I have been racing since I was 19 when I bought my 99 Prelude (so that makes 8 years now)... I don't get to race as much as I would like (life gets in the way... and rubber ain't free ) but will be trying to make all 6 of the S2K events this year (all on street rubber). Need: A second set of wheels to mount some racing "street" tires on instead of using my daily driver tires... Now... I have to spend some time reading through all of the auto-x info for these cars....

01-30-2007, 07:39 PM	#134 (permalink)
*Highrev1* HR1!!!!! Join Date: Mar 2006 Location: DIRTYJERZ Age: 28 Posts: 3,492 Greg@Redshiftmotorsports.com iTrader: 1 / 100%	[quote=BigDog]The following is a quote lifted from Chris Shenefield on his RedShift Motorsports site: "If you run really high pressures to get the car to rotate, you will find the car will have more of a tendency to snap oversteer. Running lower pressure as a means of getting rotation will afford less "snappiness" at the limit because the tire is softer. Furthermore, the lower pressures in back allow a slightly higher slip angle at all lateral acceleration levels; so the tire has more lateral movement throughout the entire turning sequence (from low g to high g), and that's usually what you are after. High pressures induce oversteer by actual slip of the tread (oversteer), which is a little harder to control and can catch you off guard, especially on by fast courses." QUOTE] Like that guy knows what he's talking about HA. I know when I ran GS in teh si I had the 245's up front withthe 225's in the rear and ran umm around 14psi rear to help rotation. We found that that was almost ideal, and it just couldn't keep up withthe MINI's.

01-30-2007, 08:36 PM	#135 (permalink)
1st HI 06 Si Senior Member Join Date: Jan 2007 Location: Pearl City Hawaii Posts: 132 Jiah Quayle iTrader: 0 / 0%	Um, not positive but doesn't that tire size push you out of stock class. I though you had to be with in a few mm of the stock size?

01-30-2007, 08:44 PM	#136 (permalink)
*Highrev1* HR1!!!!! Join Date: Mar 2006 Location: DIRTYJERZ Age: 28 Posts: 3,492 Greg@Redshiftmotorsports.com iTrader: 1 / 100%	Wheels do Tires are R compunds in Stock class :)

01-30-2007, 10:01 PM	#138 (permalink)
*Highrev1* HR1!!!!! Join Date: Mar 2006 Location: DIRTYJERZ Age: 28 Posts: 3,492 Greg@Redshiftmotorsports.com iTrader: 1 / 100%	The man is a mind reader!! Acutally its Pain medication tonight, root canal FTL Why not go down to a 40 offset to get as much clearance and widen the track as much as possible. And acutally you could use the 47 in the rear to try to help the rear come around as much as possible.