New IHRA Roll Bar rule
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New IHRA Roll Bar rule
Just an FYI For all the guys / girls out there with T-Top cars, IHRA has changed the rules to read that T-Top cars are to be treated s convertables.
What this breaks down to is that any convertable (Read T-top) running 13.49 or faster in the 1/4 mile or 8.20 in the 1/8 mile needs a minimum of a 6 point roll bar.
Can you guess who needs a cage all of a sudden.....
I do not know if there has been any change with NHRA, but its worth taking a look
Bagz
What this breaks down to is that any convertable (Read T-top) running 13.49 or faster in the 1/4 mile or 8.20 in the 1/8 mile needs a minimum of a 6 point roll bar.
Can you guess who needs a cage all of a sudden.....
I do not know if there has been any change with NHRA, but its worth taking a look
Bagz
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
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NHRA toyed with it last year, then decided to keep things as they were.
I'm a little surprised to hear IHRA is clamping down. They're usually the "looser" organization.
I'm a little surprised to hear IHRA is clamping down. They're usually the "looser" organization.
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Are you sure that rule applies to the 13.49 level? It doesn't note that t-top cars are included in the 11.50-13.49 section. They made a point of saying it does apply in the 10.99 or quicker section. I'm not saying you are not correct. Just trying to find clarification.
from IHRA's website
from IHRA's website
Rollcage: Add at the end of the section, A rollcage is mandatory on all convertibles running 10.99 or quicker ¼ or 6.99 or quicker 1/8 mile. T-top vehicles follow convertible guidelines.
11.50 to 13.49 section
Rollbar / Rollcage: A minimum of a 6 point roll bar is mandatory all convertibles running 11.00 to 13.49 ¼ mile and 8.25 or quicker 1/8 mile. A roll cage is mandatory on any entry that exceeds 135 mph.
11.50 to 13.49 section
Rollbar / Rollcage: A minimum of a 6 point roll bar is mandatory all convertibles running 11.00 to 13.49 ¼ mile and 8.25 or quicker 1/8 mile. A roll cage is mandatory on any entry that exceeds 135 mph.
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Originally posted by Dewey316
Are you sure that rule applies to the 13.49 level? It doesn't note that t-top cars are included in the 11.50-13.49 section. They made a point of saying it does apply in the 10.99 or quicker section. I'm not saying you are not correct. Just trying to find clarification.
from IHRA's website
Are you sure that rule applies to the 13.49 level? It doesn't note that t-top cars are included in the 11.50-13.49 section. They made a point of saying it does apply in the 10.99 or quicker section. I'm not saying you are not correct. Just trying to find clarification.
from IHRA's website
I think the second part of what you quoted is what applies to T-tops. maybe?
Rollbar / Rollcage: A minimum of a 6 point roll bar is mandatory all convertibles running 11.00 to 13.49 ¼ mile and 8.25 or quicker 1/8 mile. A roll cage is mandatory on any entry that exceeds 135 mph.
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
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Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
I won't affect my T-top car since I already have a full cage.
Here's the IHRA link
http://www.ihra.com/news/2004/novemb...ebkupdates.htm
Down about the middle of the page under ET Bracket.
10.00 to 11.49
Rollcage: Add at the end of the section, A rollcage is mandatory on all convertibles running 10.99 or quicker ¼ or 6.99 or quicker 1/8 mile. T-top vehicles follow convertible guidelines.
11.50 to 13.49 section
Rollbar / Rollcage: A minimum of a 6 point roll bar is mandatory all convertibles running 11.00 to 13.49 ¼ mile and 8.25 or quicker 1/8 mile. A roll cage is mandatory on any entry that exceeds 135 mph.
Sort of a grey area when reading the rules. It "looks" like you still don't need a roll bar until 11.50 and a full cage at 10.99 but if you read it the other way, a T-top car now needs a roll bar at 13.49. If they put the "T-top vehicles follow convertible guidelines" in the 11.50 to 13.49 section then it would definetly need one.
Time to email IHRA tech about this one.
Here's the IHRA link
http://www.ihra.com/news/2004/novemb...ebkupdates.htm
Down about the middle of the page under ET Bracket.
10.00 to 11.49
Rollcage: Add at the end of the section, A rollcage is mandatory on all convertibles running 10.99 or quicker ¼ or 6.99 or quicker 1/8 mile. T-top vehicles follow convertible guidelines.
11.50 to 13.49 section
Rollbar / Rollcage: A minimum of a 6 point roll bar is mandatory all convertibles running 11.00 to 13.49 ¼ mile and 8.25 or quicker 1/8 mile. A roll cage is mandatory on any entry that exceeds 135 mph.
Sort of a grey area when reading the rules. It "looks" like you still don't need a roll bar until 11.50 and a full cage at 10.99 but if you read it the other way, a T-top car now needs a roll bar at 13.49. If they put the "T-top vehicles follow convertible guidelines" in the 11.50 to 13.49 section then it would definetly need one.
Time to email IHRA tech about this one.
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From: Foley, Al.
Car: 1985 IROC Z28 and 99 Nissan Altima
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Originally posted by Stephen 87 IROC
Time to email IHRA tech about this one.
Time to email IHRA tech about this one.
Thanks
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
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Axle/Gears: 12B-3.73/9"-3.89
Since the T-top caveat is only in the 10.00 to 11.49 section, one could intrepret that to mean T-tops are only treated like convertibles if faster than 11.49.
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Originally posted by five7kid
Since the T-top caveat is only in the 10.00 to 11.49 section, one could intrepret that to mean T-tops are only treated like convertibles if faster than 11.49.
Since the T-top caveat is only in the 10.00 to 11.49 section, one could intrepret that to mean T-tops are only treated like convertibles if faster than 11.49.
Also, I don't like the wording of the battery restriction. This leads me to believe you can no longer trunk mount a battery in a box.. "firewall" ?? wtf.
-- Joe
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Was thinking that myself, but man, I have to argue with the idiot kids in tech over wether or not I need a guard for my supercharger belt.
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From: Detroit, MI, USA
Car: '82 Trans Am
Engine: Blown 540 BBC
Transmission: TH475
Axle/Gears: Dana 60, 4.10 w/spool
About the only rule regarding blower belts is that any fuel and/or oil lines passing the drive belt need to be shielded, and this only applies to cars going 9.99 or quicker. There is no belt guard of any sort on my car, and it is a non-issue at the tracks I go to.
The IHRA book definately needs to be cleared up regarding the "T-top vehicles follow convertible guidelines" rule. Some guy building his T-top car that runs in the 11.50 to 13.49 range more than likely isn't going to look at the 10.00 to 11.50 safety requirements, and won't find out about it until he's at the track and doesn't pass tech. Bound to PO a few people.
The IHRA book definately needs to be cleared up regarding the "T-top vehicles follow convertible guidelines" rule. Some guy building his T-top car that runs in the 11.50 to 13.49 range more than likely isn't going to look at the 10.00 to 11.50 safety requirements, and won't find out about it until he's at the track and doesn't pass tech. Bound to PO a few people.
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Originally posted by five7kid
Since the T-top caveat is only in the 10.00 to 11.49 section, one could intrepret that to mean T-tops are only treated like convertibles if faster than 11.49.
Since the T-top caveat is only in the 10.00 to 11.49 section, one could intrepret that to mean T-tops are only treated like convertibles if faster than 11.49.
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Good news for all you T-top owners. Here's what I wrote to IHRA.
There seems to be a grey area in the wording about needing a roll bar for T-top cars in 2005.
The 10.00 to 11.49 section states that convertibles need the full cage at 10.99 and quicker. T-top vehicles follow convertible guidelines.
In the 11.50 to 13.49 section a rollbar is required on convertibles running 11.0 to 13.49 but no mention if T-top cars are also included in this ET range.
I don't have a copy of the 2005 rulebook yet but I'm just reading the revisions online. Please clarify the requirements for T-top car rollbar/cage ET range.
And the answer I received today was:
"T top entries in this class follow the regular class entries no bar"
That means you still won't need a 6 point bar until you hit 11.49 under IHRA rules but at 10.99 you'll still need the full cage. That's only 1/2 second difference so if you're to the point where you need a roll bar, you might as well invest in a full cage. You can still have a swing out door bar with a full cage.
There seems to be a grey area in the wording about needing a roll bar for T-top cars in 2005.
The 10.00 to 11.49 section states that convertibles need the full cage at 10.99 and quicker. T-top vehicles follow convertible guidelines.
In the 11.50 to 13.49 section a rollbar is required on convertibles running 11.0 to 13.49 but no mention if T-top cars are also included in this ET range.
I don't have a copy of the 2005 rulebook yet but I'm just reading the revisions online. Please clarify the requirements for T-top car rollbar/cage ET range.
And the answer I received today was:
"T top entries in this class follow the regular class entries no bar"
That means you still won't need a 6 point bar until you hit 11.49 under IHRA rules but at 10.99 you'll still need the full cage. That's only 1/2 second difference so if you're to the point where you need a roll bar, you might as well invest in a full cage. You can still have a swing out door bar with a full cage.
Joined: Jul 1999
Posts: 12,101
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Originally posted by Stephen 87 IROC
Good news for all you T-top owners. Here's what I wrote to IHRA.
There seems to be a grey area in the wording about needing a roll bar for T-top cars in 2005.
The 10.00 to 11.49 section states that convertibles need the full cage at 10.99 and quicker. T-top vehicles follow convertible guidelines.
In the 11.50 to 13.49 section a rollbar is required on convertibles running 11.0 to 13.49 but no mention if T-top cars are also included in this ET range.
I don't have a copy of the 2005 rulebook yet but I'm just reading the revisions online. Please clarify the requirements for T-top car rollbar/cage ET range.
And the answer I received today was:
"T top entries in this class follow the regular class entries no bar"
That means you still won't need a 6 point bar until you hit 11.49 under IHRA rules but at 10.99 you'll still need the full cage. That's only 1/2 second difference so if you're to the point where you need a roll bar, you might as well invest in a full cage. You can still have a swing out door bar with a full cage.
Good news for all you T-top owners. Here's what I wrote to IHRA.
There seems to be a grey area in the wording about needing a roll bar for T-top cars in 2005.
The 10.00 to 11.49 section states that convertibles need the full cage at 10.99 and quicker. T-top vehicles follow convertible guidelines.
In the 11.50 to 13.49 section a rollbar is required on convertibles running 11.0 to 13.49 but no mention if T-top cars are also included in this ET range.
I don't have a copy of the 2005 rulebook yet but I'm just reading the revisions online. Please clarify the requirements for T-top car rollbar/cage ET range.
And the answer I received today was:
"T top entries in this class follow the regular class entries no bar"
That means you still won't need a 6 point bar until you hit 11.49 under IHRA rules but at 10.99 you'll still need the full cage. That's only 1/2 second difference so if you're to the point where you need a roll bar, you might as well invest in a full cage. You can still have a swing out door bar with a full cage.
Anyway. So this is the guidlines?
13.49 - 10.99 Convertible BAR
10.99 - ? Convertible/t-top CAGE
11.49 - 10.99 T-top BAR
11.49 - 9.99 Hardtop BAR
???
-- Joe
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
From: "Baker, Michael" <mbaker@ihra.com>
To: stephen87iroc
Return-Path: mbaker@ihra.com
X-OriginalArrivalTime: 02 Dec 2004 19:15:46.0776 (UTC)
T top entries in this class follow the regular class entries no bar
-----Original Message-----
From: Marchyshyn, James
Sent: Thursday, December 02, 2004 10:49 AM
To: Baker, Michael
Subject: FW: 2005 T-top rules
-----Original Message-----
From: Stephen
Sent: Wednesday, December 01, 2004 8:46 PM
To: IHRA Comments
Subject: 2005 T-top rules
There seems to be a grey area in the wording about needing a roll bar for T-top cars in 2005.
The 10.00 to 11.49 section states that convertibles need the full cage at 10.99 and quicker. T-top vehicles follow convertible guidelines.
In the 11.50 to 13.49 section a rollbar is required on convertibles running 11.0 to 13.49 but no mention if T-top cars are also included in this ET range.
I don't have a copy of the 2005 rulebook yet but I'm just reading the revisions online. Please clarify the requirements for T-top car rollbar/cage ET range.
Thanks
Stephen
CX09
To: stephen87iroc
Return-Path: mbaker@ihra.com
X-OriginalArrivalTime: 02 Dec 2004 19:15:46.0776 (UTC)
T top entries in this class follow the regular class entries no bar
-----Original Message-----
From: Marchyshyn, James
Sent: Thursday, December 02, 2004 10:49 AM
To: Baker, Michael
Subject: FW: 2005 T-top rules
-----Original Message-----
From: Stephen
Sent: Wednesday, December 01, 2004 8:46 PM
To: IHRA Comments
Subject: 2005 T-top rules
There seems to be a grey area in the wording about needing a roll bar for T-top cars in 2005.
The 10.00 to 11.49 section states that convertibles need the full cage at 10.99 and quicker. T-top vehicles follow convertible guidelines.
In the 11.50 to 13.49 section a rollbar is required on convertibles running 11.0 to 13.49 but no mention if T-top cars are also included in this ET range.
I don't have a copy of the 2005 rulebook yet but I'm just reading the revisions online. Please clarify the requirements for T-top car rollbar/cage ET range.
Thanks
Stephen
CX09
Last edited by AlkyIROC; Dec 2, 2004 at 10:41 PM.
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