NHRA question
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Uh oh...I'm in trouble.........
JIM
JIM
Race Director
Joined: Sep 2000
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From: The Top of Utah
Originally Posted by 93 ragtop
That was what I was hoping for. Thanks for your help!!
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Thread Starter
Le Mans Master
Joined: Apr 2000
Posts: 5,713
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From: Manassas VA
Maybe I should add more info to this. I purchased a conv. vette which has a 6 point roll bar in it now. It has the door bar with swing outs. I was told it is a NHRA legal bar, and I assume it is.
My understanding, without a roll bar was 13.49 for a conv. and 11.49 on a hardtop. Then, if a 6 point NHRA legal bar was added to a hardtop, it was good for 10.00 et.
Now, here is my question.
"Assuming" it is a "Legal 6 point NHRA bar" is it ok to go as low as 10.00 et with a conv?
Team Owner
Joined: Oct 2001
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From: Boynton Beach Florida
St. Jude Donor '07-'12, '20
My bad, i'm incorrect :bb ***See the 2 answers below me as THEY ARE CORRECT*** The answer as described in the posts below, is located on page 21 of the 2007 NHRA Rule Book if you have one.
Last edited by 16Again; Jun 24, 2007 at 01:16 PM.
Race Director
Joined: Sep 2000
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From: The Top of Utah
Originally Posted by 93 ragtop
"Assuming" it is a "Legal 6 point NHRA bar" is it ok to go as low as 10.00 et with a conv?
NHRA has specs for a roll bar. One of the specs is that be a minimum of 5 points. A swing out door bar is allowed. NHRA also has rules as to what ETs and car configurations require a roll bar. Whether the bar is chromoly or mild steel, 5 point or 6 point, with or without a swing out door bar, does not change or extend where it is required. I don't question whether your bar is legal or not. I had HUA syndrome when I wrote my first answer. I addressed how fast you could be before a roll bar is needed. You wanted to know how fast before a roll cage is needed. The information you added wasn't necessary, but it did serve as a wake up call for me. Sorry about the first, and I hope this helps.
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Safety Car
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From: Lahaina Hi
Convertables running 10.99 or quicker or exceeding 135 mph roll cage mandatory .
Roll bar mandatory in all cars (including T-tops)running 11.00 to 11.49,convertables running 11.00 to 11.49.
Cage mandatory for 10.99 or quicker or exceeding 135 mph.
Roll bar mandatory in all cars (including T-tops)running 11.00 to 11.49,convertables running 11.00 to 11.49.
Cage mandatory for 10.99 or quicker or exceeding 135 mph.
Race Director
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From: The Top of Utah
Originally Posted by REDC4CORVETTE
Convertables running 10.99 or quicker or exceeding 135 mph roll cage mandatory .
Roll bar mandatory in all cars (including T-tops)running 11.00 to 11.49,convertables running 11.00 to 11.49.
Cage mandatory for 10.99 or quicker or exceeding 135 mph.
Roll bar mandatory in all cars (including T-tops)running 11.00 to 11.49,convertables running 11.00 to 11.49.
Cage mandatory for 10.99 or quicker or exceeding 135 mph.
Also in the roll cage section, coupes are given a break from the cage requirement between 10.00 and 10.99 if they are full bodied and have an unaltered firewall, floor and body. I have paraphrased, slightly, so see the 2007 NHRA Rulebook for details.
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Thread Starter
Le Mans Master
Joined: Apr 2000
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From: Manassas VA
Thanks to everyone for all their help!!
I will add, I purchased a vette from fellow forum member "Bruce" which is the car I am refering too. It needs a little work, ie oil leaks, and the DFI system has not been tuned yet. It has a 383 and a rear mount 85mm turbo. Bruce made 544rwhp with a 14lb supercharger before going turbo, so the car has potiental. However it does have a stock diff, and a 6 speed, so those will limit the ET.
I have a hardtop from my other vette, but I do not know if it will clear the rollbar or not.
Again, I want to thank everyone for taking the time to answer my questions.
I will add, I purchased a vette from fellow forum member "Bruce" which is the car I am refering too. It needs a little work, ie oil leaks, and the DFI system has not been tuned yet. It has a 383 and a rear mount 85mm turbo. Bruce made 544rwhp with a 14lb supercharger before going turbo, so the car has potiental. However it does have a stock diff, and a 6 speed, so those will limit the ET.
I have a hardtop from my other vette, but I do not know if it will clear the rollbar or not.
Again, I want to thank everyone for taking the time to answer my questions.
Look forward to seeing you and everyone this fall!!