Autocrossing & Roadracing Suspension Setup for Track Corvettes, Camber/Caster Adjustments, R-Compound Tires, Race Slicks, Tips on Driving Technique, Events, Results
Sponsored by:
Sponsored by:

Why roadracers shouldn't drag race...

Thread Tools
 
Search this Thread
 
Old 11-12-2007, 06:03 PM
  #1  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default Why roadracers shouldn't drag race...

So they had a track day rental at MIR, an NHRA certified track. I tried hard to get my car to launch, but between wheelhop, bogging, and spinning, and just couldn't get a launch to be "happy" with, without fear of breaking hard parts. The clutch held fine, and maybe if I'd played with tire pressures and tried a more abusive approach, I'd have had better results... Had a slew of 117MPH passes in the 12.4 to 12.8 range. Reaction times weren't bad, ranging from .500 to .577, but the 60 ft. times were horrid, ranging in 2.1 - 2.3 with massive wheelspin thru 3rd gear. I knew there was a reason I don't drag race...

Mike
Old 11-12-2007, 06:05 PM
  #2  
2000BSME
Le Mans Master
 
2000BSME's Avatar
 
Member Since: Mar 2005
Posts: 9,996
Received 17 Likes on 14 Posts

Default

tell me about your car. All I see is Porshe. I see alot of those at the course I go to, but they have so many designations for them.
Old 11-12-2007, 06:15 PM
  #3  
xsiveone
Le Mans Master
 
xsiveone's Avatar
 
Member Since: Jul 2004
Posts: 6,661
Likes: 0
Received 1 Like on 1 Post
Default

I wouldn't bother drag racing with your car. If you tear up that drivetrain, it's going to cost a pretty penny to fix it.

It's fast enough. Leave it at that.
Old 11-12-2007, 06:18 PM
  #4  
Aardwolf
Race Director
 
Aardwolf's Avatar
 
Member Since: Jun 2004
Location: WI
Posts: 12,486
Received 372 Likes on 308 Posts

Default

Is that RWD? A lot of negative camber is good for a road course but bad for the drag track. I have been keeping my rear camber to .5 total because of this.
Old 11-12-2007, 06:21 PM
  #5  
xsiveone
Le Mans Master
 
xsiveone's Avatar
 
Member Since: Jul 2004
Posts: 6,661
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Aardwolf
Is that RWD? A lot of negative camber is good for a road course but bad for the drag track. I have been keeping my rear camber to .5 total because of this.
No. It's AWD. It's a modified 996 911 TT.

I don't know the exact mods. I'll let Mike fill you in on it.
Old 11-12-2007, 06:22 PM
  #6  
Mikelly
Melting Slicks
Thread Starter
 
Mikelly's Avatar
 
Member Since: Nov 2003
Location: Fredericksburg VA
Posts: 2,555
Received 5 Likes on 3 Posts

Default

It really sad.. Ive got coilovers with really stiff settings and stiff springs, about 600BHP and AWD... And way to much negative camber, way to much tire pressure in my street tires, and way to much torque...

Sucked really...

Mike
Old 11-12-2007, 06:29 PM
  #7  
Olitho
Le Mans Master
 
Olitho's Avatar
 
Member Since: Oct 2004
Location: California
Posts: 5,318
Received 355 Likes on 222 Posts

Default

Hey, don't feel bad. While I have not drag raced, yet, although I want to try, you should have seen how bad I sucked at autocross a few months back when I tried that.

Old 11-12-2007, 07:21 PM
  #8  
sothpaw2
Safety Car
 
sothpaw2's Avatar
 
Member Since: Sep 2002
Location: Maryland
Posts: 4,030
Received 6 Likes on 6 Posts

Default

Wish I could have been there. I was eyeing the date and the weather looked good, but my wife had this stupid Pampered Chef party she had to do. Only 6 people showed up. I bet she nets no more than $50.
Old 11-12-2007, 08:45 PM
  #9  
Bink
Safety Car
 
Bink's Avatar
 
Member Since: Mar 2002
Posts: 4,928
Received 1 Like on 1 Post
Cruise-In V Veteran
St. Jude Donor '09

Default

First-
You need a set of drag radials.

Then-
Tach it to about 6 grand and dump it. ..........................pedal her from there.
.
.
.
.
.
.
.naw....just funnin'.

That car is too pretty to beat on...and I mean that as a compliment.
Old 11-12-2007, 09:49 PM
  #10  
73-84 IMSA Widebody
Drifting
 
73-84 IMSA Widebody's Avatar
 
Member Since: May 2006
Location: Youngstown Ohio
Posts: 1,544
Likes: 0
Received 0 Likes on 0 Posts
Default

In 06 we tried an afternoon at the drags and guess what I found to be the secret.....seat time. I ran 4 passes in the 10's getting better every time then turned the car over to an experienced drag racer, who ignored my instruction to take it easy out of the hole. One pass 9.58 at 148 mph
Old 11-12-2007, 10:34 PM
  #11  
Allthrottleandsomebottle
Race Director
Support Corvetteforum!
 
Allthrottleandsomebottle's Avatar
 
Member Since: Aug 1999
Location: Lackey, my own dragstrip VA.
Posts: 16,928
Received 26 Likes on 13 Posts
Virginia Events Coordinator
Cruise-In IV Veteran
Cruise-In V Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
NCM Ambassador

Default

Hehehe...seat time is key......cracking off some 10s at 124+ last Friday
Old 11-12-2007, 10:48 PM
  #12  
Bink
Safety Car
 
Bink's Avatar
 
Member Since: Mar 2002
Posts: 4,928
Received 1 Like on 1 Post
Cruise-In V Veteran
St. Jude Donor '09

Default

Originally Posted by ALLTHROTTLE&NOBOTTLE
Great pic..................looks like it hooks well.
Old 11-13-2007, 10:16 AM
  #13  
96CollectorSport
Melting Slicks
 
96CollectorSport's Avatar
 
Member Since: Sep 2003
Location: If you don't weigh in you don't wrestle Road America
Posts: 3,031
Likes: 0
Received 73 Likes on 54 Posts

Default

Drag racing is for those with A.D.D. ........ A winner every 13 seconds!!!!



Just kidding, I just say that cause I sucked at the drags as well.

Each form of racing takes its own skills and most of us are into the RR/AutoX. But drag racing, dirt track and NASCAR all have there own techniqe to go fast.
Old 11-13-2007, 10:58 AM
  #14  
gkull
Team Owner
 
gkull's Avatar
 
Member Since: Apr 1999
Location: Reno Nevada
Posts: 21,749
Received 1,329 Likes on 1,057 Posts

Default

Originally Posted by Mikelly
So they had a track day rental at MIR, an NHRA certified track. I tried hard to get my car to launch, but between wheelhop, bogging, and spinning, and just couldn't get a launch to be "happy" with, without fear of breaking hard parts. The clutch held fine, and maybe if I'd played with tire pressures and tried a more abusive approach, I'd have had better results... Had a slew of 117MPH passes in the 12.4 to 12.8 range. Reaction times weren't bad, ranging from .500 to .577, but the 60 ft. times were horrid, ranging in 2.1 - 2.3 with massive wheelspin thru 3rd gear. I knew there was a reason I don't drag race...

Mike
117mph is a true indication of power VS weight. I also would have thought that AWD would have some very fast 60 foot times. I've driven some very fast turbo vehicles at drag racing just for fun.

The real test would have been to compare your times with a C-6 Z0-6 on the same day on the same track
Old 11-13-2007, 11:00 AM
  #15  
heavychevy
Safety Car
 
heavychevy's Avatar
 
Member Since: Sep 2005
Location: Road Atlanta You do the MATH!
Posts: 4,369
Received 179 Likes on 112 Posts

Default

This must be a give and take thing, I suck at drag racing too, I can shift like a ***** but I cant launch for crap.

But Mike, youd have to be struggling to trap 117 when you should be trapping 130, especially at that track, but I'm sure the - camber doesnt help either.

But I cant talk, my 800 rwhp vette I can only get to 132 because I've got 20's on the rear and bog 1rst and second all the time. In fact I trapped my fastest launching in second gear and bogging to the 330'. . I may try some DR's one day, but broken rear ends are not your friend. It should at least be mid 140's
Old 11-13-2007, 11:04 AM
  #16  
heavychevy
Safety Car
 
heavychevy's Avatar
 
Member Since: Sep 2005
Location: Road Atlanta You do the MATH!
Posts: 4,369
Received 179 Likes on 112 Posts

Default

Originally Posted by gkull
117mph is a true indication of power VS weight. I also would have thought that AWD would have some very fast 60 foot times. I've driven some very fast turbo vehicles at drag racing just for fun.

The real test would have been to compare your times with a C-6 Z0-6 on the same day on the same track
It can be, but not always, if you are losing traction in 2nd or third gear and or have considerable lag, it can affect your trap speed significantly.

The 996 TT is notoriously hard to launch in AWD form, in fact many people go to RWD just because of it, I refused to beleive it myself until I tried it, my best launch to date is a 1.98, and I got a 2.0 in my corvette that I mentioned above, with 20's lag, bog and spin.


But my 439.6 Dyno Dynamics RWHP (converted to rwd for dyno then back) has trapped 1 mph slower than Lankhoss' 500 rwhp Dynojet Z06. I do agree that if he is not spinning a majority of the way down the track, then something is lacking in the power area. I doubt lag is an issue.

Last edited by heavychevy; 11-13-2007 at 11:07 AM.
Old 11-13-2007, 11:29 AM
  #17  
gkull
Team Owner
 
gkull's Avatar
 
Member Since: Apr 1999
Location: Reno Nevada
Posts: 21,749
Received 1,329 Likes on 1,057 Posts

Default

I have never drag raced my last couple of Vette motors. Because road setups are not set for a launch and it would be a waste of time drag racing without wrinkle wall slicks. I have wondered how well GoodYear sportsman RR slicks would work on a drag strip. I'm now using 12X27 rears and in a straight line I think that they will hold my motor in second gear

Get notified of new replies

To Why roadracers shouldn't drag race...

Old 11-13-2007, 11:31 AM
  #18  
Cobra4B
Team Owner
 
Cobra4B's Avatar
 
Member Since: Mar 2001
Location: Virginia Beach
Posts: 25,889
Likes: 0
Received 5 Likes on 5 Posts
CI 3-5-6-7-8 Veteran

Default

I grew up drag racing... took my Cobra to MIR on many Friday nights for Midnight Madness bracket racing

I even got my Z06 to run a 12.156 @ 116.8 on street tires w/ only an intake and headers... I was pretty pround of that (371 rwhp).

Mike... road racing mods are in direct opposition to drag racing mods... your allignment and suspension were killing you.

A local guy here has a Porsche like your converted to RWD that makes almost 900 rwhp. It's tuned by a company called Pro Drive I think. He's an EOD and is away in Iraq for a bit. Whe he comes back he said hes upgrading the turbos for over 900 rwhp.

The car is blistering fast... and w/ the rear motor it hooks amazingly well. One of the few cars that can actually put all that power down.
Old 11-13-2007, 11:40 AM
  #19  
heavychevy
Safety Car
 
heavychevy's Avatar
 
Member Since: Sep 2005
Location: Road Atlanta You do the MATH!
Posts: 4,369
Received 179 Likes on 112 Posts

Default

Originally Posted by Cobra4B
I grew up drag racing... took my Cobra to MIR on many Friday nights for Midnight Madness bracket racing

I even got my Z06 to run a 12.156 @ 116.8 on street tires w/ only an intake and headers... I was pretty pround of that (371 rwhp).

Mike... road racing mods are in direct opposition to drag racing mods... your allignment and suspension were killing you.

A local guy here has a Porsche like your converted to RWD that makes almost 900 rwhp. It's tuned by a company called Pro Drive I think. He's an EOD and is away in Iraq for a bit. Whe he comes back he said hes upgrading the turbos for over 900 rwhp.

The car is blistering fast... and w/ the rear motor it hooks amazingly well. One of the few cars that can actually put all that power down.

That has to be Scott's car, I know he's from Virginia, is in Iraq, and has that much power, I think his car is a Protomotive car though.
Old 11-13-2007, 11:48 AM
  #20  
Aardwolf
Race Director
 
Aardwolf's Avatar
 
Member Since: Jun 2004
Location: WI
Posts: 12,486
Received 372 Likes on 308 Posts

Default

The C4 puts the power down.

http://s26.photobucket.com/albums/c1...t=330ftRun.flv



Quick Reply: Why roadracers shouldn't drag race...



All times are GMT -4. The time now is 01:01 PM.