AutoX guys?
Thread Starter
Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 12
AutoX guys?
I know alot of you guys run your cars on the autox courses. I am thinking about doing the same with my 1992 this year. I have full dual adjustable coilovers on the car but that is my only suspension mod. I plan on upgrading to bigger sway bars and running some good slicks for the track. My main questions are, what sway bar sizes are you guys running and what tires have you found that work best on your C4s.? 
Burning Brakes
Joined: Dec 2006
Posts: 1,090
Likes: 80
From: Burleson Texas
Depending on the sanctioning body you are running with may denote what components you decide to select. My 1989 has 30mm front bar in urethane & a 24mm rear bar in urethane. I run Toyo Proxies with a 140 tread wear compound (factory rated). Have fun!
Thread Starter
Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 12
Burning Brakes
Joined: Dec 2006
Posts: 1,090
Likes: 80
From: Burleson Texas
We had a 2008 Z06 and it was a good car on the track (my wife also races). Since we race each season with NCCC, we liked the 1989, it handles well, cheap to race (tires, brakes, & components) and we enjoy out performing new cars with more hp. The 2003 Z06 is also a good track car, last season she raced the 89 & I raced the Z at an event at TMS - we had a great time. Your C6 would work well, but you will worry less about your C4 on the track & it is cheaper to run. Is your C4 an automatic?
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
If I were you, I would start off with what you have.......stock. Get the feel of the car. Start off with traction control engaged and keep pushing the car. Then work up to taking the TC and turning it off. Work on your driving skills first. Then next year start your car upgrades. Tires would probably be the biggest upgrade to keep you planted on the course.
For the most part of your course, you will shift from 1st to 2nd and leave it in second. Enjoy the car and have fun.
I have been running my stock 95 for a couple of years now. Just upgraded to 30mm front sway bar and 26mm in the rear. Have not moved up in the way of tires at this point. Still working on the driving skills and pushing the car more.
For the most part of your course, you will shift from 1st to 2nd and leave it in second. Enjoy the car and have fun.
I have been running my stock 95 for a couple of years now. Just upgraded to 30mm front sway bar and 26mm in the rear. Have not moved up in the way of tires at this point. Still working on the driving skills and pushing the car more.
Last edited by John A. Marker; May 20, 2014 at 12:39 PM.
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Burning Brakes
Joined: Dec 2006
Posts: 1,090
Likes: 80
From: Burleson Texas
Just took a look at your thread on your new engine, with that setup in your C4 you really need brake & suspension modifications...and a stage 3++ clutch.
Last edited by Race Prepared; May 20, 2014 at 01:00 PM.
Thread Starter
Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 12
The 6 speed is a plus in my opinion, our 89 is a six speed but we run the stock shifter due to class rules. It is still in good shape since the car just turned over 36,000 miles. Also, buy a good quality brake fluid and bleed your brakes - think about installing Hawk HP Plus pads for superior braking power. I run the same clutch setup as you have and it works good. Are you proficient at setting up your coil overs?
Just took a look at your thread on your new engine, with that setup in your C4 you really need brake & suspension modifications...and a stage 3++ clutch.
Just took a look at your thread on your new engine, with that setup in your C4 you really need brake & suspension modifications...and a stage 3++ clutch.
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 78
From: Monroe OH
NCM Sinkhole Donor
For brakes, the stock system will work fine. You just need good pads such as the Hawk HP plus and a good fluid flush/bleed with a good fluid.
With almost any sanctioning body/ club you run with, the coil overs are going to put you into an prepared or modified class. If you are able to do it, it would be a benefit to go back to the transverse spring set up. It will be easier to tune for you.
With almost any sanctioning body/ club you run with, the coil overs are going to put you into an prepared or modified class. If you are able to do it, it would be a benefit to go back to the transverse spring set up. It will be easier to tune for you.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I boiled my brake fluid several times before I found a brake fluid that could take the heat (Castrol SRF). That was back in the late '80s and I have stuck with it because I know it works.
There are cheaper alternatives now. Some people like Motul (it's MUCH cheaper) and Ford HD racing fluid. There are others.
There are cheaper alternatives now. Some people like Motul (it's MUCH cheaper) and Ford HD racing fluid. There are others.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
w/other about brake fluids and good pads. If you're autox'ing for points, then I also agree about the spring -go back to stock on the spring. If you're doing it for fun only who cares what class you're in, go haver fun, and compare your times w/other similar cars. On a TRACK, they're both equally fun to drive; the feeling is similar...but in the C6 you're going faster for the same "experience" or effort. A lot faster. I think most of it has to do w/the motor (100 more hp), but some of it is confidence; C6 provides a little more right up to the limit.
At auto x the C4 is better, hands down. I don't know why, but I go much faster, AND I have more fun at auto x w/my C4 than I ever could with my C6.
Cars:
Base '92 6 speed
Base '06 6 speed with Z51 suspension and PS2 tires.
Last edited by Tom400CFI; May 21, 2014 at 11:33 AM.
Burning Brakes
Joined: Dec 2006
Posts: 1,090
Likes: 80
From: Burleson Texas
For brakes, the stock system will work fine. You just need good pads such as the Hawk HP plus and a good fluid flush/bleed with a good fluid.
With almost any sanctioning body/ club you run with, the coil overs are going to put you into an prepared or modified class. If you are able to do it, it would be a benefit to go back to the transverse spring set up. It will be easier to tune for you.
With almost any sanctioning body/ club you run with, the coil overs are going to put you into an prepared or modified class. If you are able to do it, it would be a benefit to go back to the transverse spring set up. It will be easier to tune for you.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
He's talking about an AUTOX "track". Don't need monster brakes for autox no matter what you have for an engine. Good pads and fluid is plenty. 
Last edited by Tom400CFI; May 21, 2014 at 02:59 PM.