Autocross - ZR-1 Net Registry Forums

jrtoffroad · 03-09-2011

Took my ZR1 to an autocross last weekend for the 1st time and wow what a blast, I've been on a high all week. I'm already anxiously awaiting the next event!

The balance and power of the zr1 is simply amazing. I've only autocrossed 2 times before, once in a GT Mustang and once in my 69' TR6, and while those were fun, the performance doesn't even compare. My tires are a little old, and that combined with cold damp conditions made it tricky. I found my best times by short shifting to second and keeping the revs down to help keep the rear end in check.

Although I'd really like to pickup some new sticky tires, I was still able to get 1st in my class (B Street Prepared), and 3rd out of ~20 novices.

Anyways, just wanted to brag. Next event is in 2 weeks, hopefully I'll get some video.

Anyone else autocross their Z? Any input on tires, tire pressure, or alignment settings?

-Jordan

bobbyhi · 03-09-2011

Quote:

Originally Posted by jrtoffroad

Took my ZR1 to an autocross last weekend for the 1st time and wow what a blast, I've been on a high all week. I'm already anxiously awaiting the next event!

The balance and power of the zr1 is simply amazing. I've only autocrossed 2 times before, once in a GT Mustang and once in my 69' TR6, and while those were fun, the performance doesn't even compare. My tires are a little old, and that combined with cold damp conditions made it tricky. I found my best times by short shifting to second and keeping the revs down to help keep the rear end in check.

Although I'd really like to pickup some new sticky tires, I was still able to get 1st in my class (B Street Prepared), and 3rd out of ~20 novices.

Anyways, just wanted to brag. Next event is in 2 weeks, hopefully I'll get some video.

Anyone else autocross their Z? Any input on tires, tire pressure, or alignment settings?

-Jordan

Don't know anything about the settings, etc. but good luck in 2 weeks

Keep the rubber side down...............

ZR1@gmx.com · 03-09-2011

Sounds fun! I have never done it but would love the opportunity!

QB93Z · 03-09-2011

Thanks for telling us about you experience at the track. Try posting a specific question about setting in the General Section. You will get a lot more responses.

Jim

tomtom72 · 03-10-2011

Waaay cool! 1st in class!

You may want to call Doug Rippie or have a look at Dick Gulstrand's site for alignment suggestions....maybe even vette brakes & products might have something.

I would say maybe a set of Nitto NT05's or INVO's maybe; unless you want to have a set of dedicated track tires and another set for street use?

I know that this may sound stupid. In our pizza boxes is a small spiral bound book with the splash logo on it. That book is an owners' manual specific to the ZR-1, and it it there is an "off road" section. In that section it has a suggestion of alignment settings for track use....there is a whole bunch of info actually that I found good reading, JMHO.

Tom

jrtoffroad · 03-27-2011

Hit the autocross again today, here's a couple videos:

Interior (very shaky)-
http://www.youtube.com/watch?v=fY81J9M9DA8

Exterior -
http://www.youtube.com/watch?v=5JShaLf_EWc

Ended up getting 2nd in class, but still aways off the BTD. Car did GREAT, hope to get a new set of tires before the next event and maybe look into tweaking the alignment a little.

94Admiral · 04-01-2011

Thanks for the videos!! That looks like a real blast!!

Any hints on performance improvements you made or anything you learned about the car doing this? Thanks!

jrtoffroad · 09-26-2011

Went to my 10th autocross for the year yesterday and the ol ZR1 made me VERY proud.

Held FTD all morning, losing it to a c5 Z06 in the afternoon, but coming out 2nd overall (raw time) in a field of 84 cars. The course was long and fast, just what the ZR-1 likes. On the back straight I was just about at the rev limiter in 2nd before braking for a 3 cone slalom leading into a sweeper.

No recent changes to the car. Surprisingly the Nitto NT-01 really hooked up well even with cooler temps. Pressures were kept at ~33 front & ~30 rear hot.

No video, but will post some pics later.

jrtoffroad · 11-02-2011

Well, had another Auto-X Sunday (10/30) and took home FTD in a field of ~60 cars!

Only change on the car was properly torquing a few very loose rear suspension components (A couple nuts were just finger tight!!!). Ran the tire pressure VERY low for this event, ~28 front and ~26 rear. Traction was great, but car felt a little loose on the edge, probably run them a touch higher at the next event.

Even cooler at this event (high of ~60), and the NT-01's still did not disappoint.

Overall great event, with a slightly smaller turn out than usual we were able to get 8 runs in (with each averaging ~50sec).

JThomas · 11-19-2011

Yep, you're hooked! Keep it up.

03-09-2011	#1
jrtoffroad Join Date: Sep 2010 Location: Colorado Springs, CO Posts: 75	Autocross Took my ZR1 to an autocross last weekend for the 1st time and wow what a blast, I've been on a high all week. I'm already anxiously awaiting the next event! The balance and power of the zr1 is simply amazing. I've only autocrossed 2 times before, once in a GT Mustang and once in my 69' TR6, and while those were fun, the performance doesn't even compare. My tires are a little old, and that combined with cold damp conditions made it tricky. I found my best times by short shifting to second and keeping the revs down to help keep the rear end in check. Although I'd really like to pickup some new sticky tires, I was still able to get 1st in my class (B Street Prepared), and 3rd out of ~20 novices. Anyways, just wanted to brag. Next event is in 2 weeks, hopefully I'll get some video. Anyone else autocross their Z? Any input on tires, tire pressure, or alignment settings? -Jordan

03-09-2011	#3
ZR1@gmx.com Join Date: Oct 2010 Location: Sedalia, MO Posts: 150	Re: Autocross Sounds fun! I have never done it but would love the opportunity! __________________ Fun 91 #303

03-09-2011	#4
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,689	Re: Autocross Thanks for telling us about you experience at the track. Try posting a specific question about setting in the General Section. You will get a lot more responses. Jim __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member

03-10-2011	#5
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: Autocross Waaay cool! 1st in class! You may want to call Doug Rippie or have a look at Dick Gulstrand's site for alignment suggestions....maybe even vette brakes & products might have something. I would say maybe a set of Nitto NT05's or INVO's maybe; unless you want to have a set of dedicated track tires and another set for street use? I know that this may sound stupid. In our pizza boxes is a small spiral bound book with the splash logo on it. That book is an owners' manual specific to the ZR-1, and it it there is an "off road" section. In that section it has a suggestion of alignment settings for track use....there is a whole bunch of info actually that I found good reading, JMHO. Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

03-27-2011	#6
jrtoffroad Join Date: Sep 2010 Location: Colorado Springs, CO Posts: 75	Re: Autocross Hit the autocross again today, here's a couple videos: Interior (very shaky)- http://www.youtube.com/watch?v=fY81J9M9DA8 Exterior - http://www.youtube.com/watch?v=5JShaLf_EWc Ended up getting 2nd in class, but still aways off the BTD. Car did GREAT, hope to get a new set of tires before the next event and maybe look into tweaking the alignment a little.

04-01-2011	#7
94Admiral Join Date: Mar 2010 Location: Newtown, CT Posts: 199	Re: Autocross Thanks for the videos!! That looks like a real blast!! Any hints on performance improvements you made or anything you learned about the car doing this? Thanks! __________________ [COLOR=red][SIZE=1][FONT=Arial Black]1991 Red/Red [/FONT][FONT=Arial Black]Haibeck 350 500 HP [/FONT][/SIZE][/COLOR][LIST][][SIZE=1][FONT=Arial Black][COLOR=red]Corsa Exhaust and [/COLOR][/FONT][FONT=Arial Black][COLOR=red]4:10 Dana 44 gears[/COLOR][/FONT][/SIZE][/LIST][COLOR=blue][SIZE=1][FONT=Arial Black]1994 Admiral Blue/[COLOR=silver]Grey[/COLOR] [/FONT][FONT=Arial Black]Haibeck 368 530 HP[/FONT][/SIZE][/COLOR][LIST][][SIZE=1][FONT=Arial Black][COLOR=blue]DRM Coilovers, [/COLOR][/FONT][FONT=Arial Black][COLOR=blue]Baer EradiSpeed Brakes, [/COLOR][/FONT][FONT=Arial Black][COLOR=blue]B&B 4th generation exhaust, 18" Face Polished Fikse FM5s, [/COLOR][/FONT][FONT=Arial Black][COLOR=blue]4:10 Dana 44 gears, and a BB tranny. [/COLOR][/FONT][/SIZE][/LIST]

09-26-2011	#8
jrtoffroad Join Date: Sep 2010 Location: Colorado Springs, CO Posts: 75	Re: Autocross Went to my 10th autocross for the year yesterday and the ol ZR1 made me VERY proud. Held FTD all morning, losing it to a c5 Z06 in the afternoon, but coming out 2nd overall (raw time) in a field of 84 cars. The course was long and fast, just what the ZR-1 likes. On the back straight I was just about at the rev limiter in 2nd before braking for a 3 cone slalom leading into a sweeper. No recent changes to the car. Surprisingly the Nitto NT-01 really hooked up well even with cooler temps. Pressures were kept at ~33 front & ~30 rear hot. No video, but will post some pics later.

11-02-2011	#9
jrtoffroad Join Date: Sep 2010 Location: Colorado Springs, CO Posts: 75	Re: Autocross Well, had another Auto-X Sunday (10/30) and took home FTD in a field of ~60 cars! Only change on the car was properly torquing a few very loose rear suspension components (A couple nuts were just finger tight!!!). Ran the tire pressure VERY low for this event, ~28 front and ~26 rear. Traction was great, but car felt a little loose on the edge, probably run them a touch higher at the next event. Even cooler at this event (high of ~60), and the NT-01's still did not disappoint. Overall great event, with a slightly smaller turn out than usual we were able to get 8 runs in (with each averaging ~50sec).

11-19-2011	#10
JThomas Join Date: May 2008 Location: Okemos, MI. Posts: 1,189	Re: Autocross Yep, you're hooked! Keep it up. __________________ Joe Thomas Corvette Club of Michigan NCRS-Michigan Chapter Member NCM Master Ambassador NCM Lifetime Member Former NCM Board Member 1991 ZR-1 Melon Copper Metallic/Black 1992 ZR-1 Bright Red/Black (Sold) 1995 ZR-1 Bright Aqua/Gray (Sold) 2012 ZR1 Super Sonic Blue / Dark Titanium