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Drag Radial rules

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Old 01-30-2010, 05:13 PM   #1
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Default Drag Radial rules

Boy I sure am glad us single turbo guys can take out that 300lbs of ballast we had to run last year.

Anybody got any 88's for sale?
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Old 01-30-2010, 05:15 PM   #2
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Hahahahahahaha
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Old 01-30-2010, 05:39 PM   #3
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You mean a 106 cant run with 88's?
Say it aint so. LOL

1 word .... clueless.
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Old 01-30-2010, 09:51 PM   #4
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LOL Mike did you have any ballast?
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Old 01-30-2010, 10:18 PM   #5
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man nmca needs to step away from d/r as a whole..

lets see twin 88s have been 6.90s with a small block weighing #100 pounds more then a single turbo deal
single 106mm has been 7.40s with a small block
single 114mm has been 7.20s with a small block

max twins allowed should be 76mm at 100#s more

but hey what do i know ive only been around drag radial for 10yrs
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Old 01-31-2010, 06:45 AM   #6
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Mike was over weight last year, with a strict winter diet he will be lucky to get under 3400. I'm the lightest of the 3 of us and will likely be at 3250. The FI power adder rules need some serious consideration. I don't know any GM FI cars that can get to those proposed weights so they are useless. And only 150 lbs for twin 88's isn't going to work. I have not talked to Mike and Steve so these only my opinions but since we have been a good supporting cast since the inception, I would hope this would be considered before the rules are finalized.

Brake lights???? so we took away the horn (which was good) and added brakelights? I understand headlights/tailights for safety in the dark but what difference does it make if you have brake lights?

BTW...Any size single turbo should be allowed...


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Old 01-31-2010, 02:29 PM   #7
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You need tailights so you can see me slowing down in front of you in the shutdown dummy!!
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Old 01-31-2010, 06:58 PM   #8
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Since the rules aren't yet set in stone, lets open up a real dialog, sans sarcastic quips and get some of the weights/limits/rules ironed out.

Using the posted rule, let all make some changes in bold and see what we can come up with.

--------------------------------------

BASE WEIGHTS
POWER ADDER CID WEIGHT
Nitrous 500 2750
Supercharged 500 2950
Single Turbo (106) 500 3100
Twin Turbo (88) 500 3250

Maximum cubic inches is 510
If actual cubic inch is more than base cubic inch listing there will be a weight penalty of 8.5 lbs. per cubic inch assessed to weights, up to the maximum cubic inch permitted in the class

WEIGHT ADDER/DEDUCTS
Sheet metal intakes add 50 pounds
Ladder bar or 4 link suspension add 100 pounds

ENGINE
Only LS based small block engines are allowed.
Cast aluminum or iron block permitted
Billet cylinder heads and blocks are prohibited
Any LS OEM or LS aftermarket head.
Any modifications allowed to heads
Displacement will be verified by using the P&G method
Dry sump oiling systems permitted
Exhaust must be directed away from vehicle, through the fender exhaust permitted
Nitrous and Supercharged combinations must run mufflers.
Zoomie headers are prohibited
Gasoline is the only fuel allowed

CARBURETOR/INDUCTION
Any style carburetor permitted including split dominators-maximum 2-carbs
Any EFI system permitted
Any Intake manifold allowed, including sheet metal/fabricated manifolds (*see weights)

POWER ADDERS
Only one style of power adder permitted.
NITROUS OXIDE: Any nitrous system permitted including push systems. No maximum number of stages. The use of agents other than nitrous oxide as part of, or mixed in, the system are prohibited. Nitrous oxide may not be used in conjunction with any other power adder. Nitrous oxide systems must use gasoline only for the fuel enrichment circuit.
SINGLE CENTRIFUGAL SUPERCHARGER: Inlet diameter-internal OD 5.250-inch maximum, impeller inducer diameter 5.150-inch maximum, impeller exducer diameter 8.000-inch, discharge diameter-external 4.00-inch, housing diameter (greatest external diameter of housing not to include discharge) 12.0 maximum. Injection of any liquid, gas, or any other substance into the inlet or exhaust housing is strictly prohibited. Supercharger compressor wheel must be constructed of cast or billet aluminum. Exotic material wheels prohibited.
SINGLE TURBOCHARGER: Accepted single turbochargers are permitted with the following requirements: 1) Turbocharger must be of conventional impeller and housing design and type. 2) Turbocharger is limited to a maximum size of 4.173” (106.0mm) - inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. 3) Inlet housing is permitted a maximum inlet diameter of 4.253” where the leading edge of the compressor wheel meets the housing. 4) All air entering the turbocharger must pass through the turbocharger inlet. Injection of any liquid, gas, or any other substance into the inlet or exhaust housing is strictly prohibited. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic material wheels prohibited. The tips of the impeller wheel may not be stepped, cut down, or notched to meet impeller tip-to-tip dimension.
TWIN TURBOCHARGERS: Accepted twin turbochargers are permitted with the following requirements: 1) Both turbochargers must be of conventional impeller and housing design and type. 2) Turbochargers are limited to a maximum size of 88 mm/3.465” - inducer wheel diameter at the point where the leading edge of the compressor wheel meets the inlet housing. 3) Inlet housing is permitted a maximum inlet diameter of 3.545” where the leading edge of the compressor wheel meets the housing. 4) All air entering the turbocharger must pass through the turbocharger inlet. Injection of any liquid, gas, or any other substance into the inlet or exhaust housing is strictly prohibited. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic material wheels prohibited. The tips of the impeller wheel may not be stepped, cut down, or notched to meet impeller tip-to-tip dimension.

TRANSMISSION
Limited to only OEM style automatic transmissions (aftermarket SFI cases permitted)
Any torque converter allowed. Lock-up type permitted.

SUSPENSION
Stock unaltered frame rails required in front sub frame. Stock rear sub frames are required, but outer frame rail portion only may be notched for tire clearance only. When notching, stock inboard section of rear frame rails must remain stock, unaltered, and in stock location. Rear frame rails must remain in OEM stock condition in all areas.
Aftermarket K-members permitted
Fully tubbed or mini tubbed wheel wells permitted
ladder bars and non-OEM 4-links permitted
Coilovers permitted
Front-wheel drive conversions prohibited
Wheelie bars are permitted

INTERIOR
Must be stock appearing.
Floors must be upholstered, headliners required
Passenger seat and rear seat may be removed
OEM appearing dash required

BODY
Forward facing hood scoops prohibited except for OEM type for non-nitrous applications
Forward facing hood scoops permitted for nitrous applications
Cowl induction hoods permitted,
OEM composite body panels permitted
Light-weight or fiberglass body pieces limited to hood, rear deck and bumpers
Overhangs must be OEM, Wheelbase must be OEM +/- 1”
Doors must be OEM
Rear spoilers permitted, max length 26”, may not be molded into the body

WINDSHIELD/WINDOWS
OEM safety glass or Lexan Permitted. Window tint is prohibited forward of the “B” pillar.

STREET EQUIPMENT
Functional headlights, taillights and brake lights required. Headlights, marker lights, brake lights, etc. must be on car and not removed for any reason.

ELECTRICAL
Electronic driving aids prohibited
Throttle stops, delay boxes and auto shifters prohibited
Two-step, trans-brakes and line-locks are permitted
Any aftermarket ignition permitted

TIRES-WHEELS
TIRES - FRONT: Front tires must have a minimum tread width of 4.5 inches.
TIRES – REAR: DOT Drag Radial Tires ONLY
The maximum allowed tire size is 315 as marked on the sidewall
ANY size wheel permitted
Bead-locks permitted

BALLAST
Must be NHRA/IHRA approved mounting - Maximum 100# per individual weight bar
No loose or unsecured ballast allowed and will be grounds for disqualification. Vehicles are required to cross scales after each qualifying run and eliminations rounds.

NMCA REQUIRED DECALS:
NMCA WINDSHIELD DECAL – must be installed on top of windshield. This NMCA decal must be the only decal on top of windshield. Other vehicle sponsor decals may be placed at base of windshield.
NMCA SIDE DECAL- must be installed on side widow of vehicle.
CLASS SPONSOR DEACAL- GM Performance Parts decal must be installed on lower right side of front windshield.

CONTINGENCY DECALS
Decals are required to appear only on the rear quarter windows or rear window in a clear and orderly fashion. Contingency decals may not be overlapped or modified

------------------------


Disclaimer, I am not on the rules committee, just a concerned fan/journalist.
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Old 01-31-2010, 07:10 PM   #9
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DR rules ...

Must be LS based ....

Turbo... 3300lbs.
Supercharger ...3000lbs.
Nitrous ...2800lbs.

Run what you brung under those weights.

I pay to see that class run.
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Old 01-31-2010, 07:46 PM   #10
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I see that the "Stock front frame rails" rule is in there too. I thought a few of the "Faster" turbo cars had them cut off part of the way...
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Old 01-31-2010, 07:59 PM   #11
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Quote:
Originally Posted by BAKED View Post
I see that the "Stock front frame rails" rule is in there too. I thought a few of the "Faster" turbo cars had them cut off part of the way...
Interesting.

That is a strange rule.
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Old 01-31-2010, 08:28 PM   #12
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Quote:
Originally Posted by InconFormula View Post
You need tailights so you can see me slowing down in front of you in the shutdown dummy!!
Read my post "dummy"...I said brakelights...not tailights. How about we hook your brakelights up to your throttle cable....that would tell an interesting story from the starting line...especially at night, lol. It would look like a disco party down the 1320'
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Last edited by BlwnTA; 01-31-2010 at 08:43 PM..
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Old 01-31-2010, 09:06 PM   #13
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Have the rules been changed to allow a Mustang like Phil's with a lsx based motor to run? Also a 114 needs to be allowed and at least 100-150 lbs added to the weight breaks.
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Old 01-31-2010, 09:47 PM   #14
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Nope.. Id love to see Phil, and any of the other swapped guys out there be able to participate, but I dont see the rules committee budging on this one. The class is sponsored by GM Performance Parts, and I dont think they want some blue oval coming in and stealing the show.

The weights need some revisions as well. I dont see anyone being able to get their car down to 3100LBS... If everyone is stuck in the 3300LB range, then you've put the twin turbo guys at the same weight as the single turbo guys. Twin 88MM > 106MM. Maybe 3250 and 3400? Or possibly... unlimited single turbo, twin 88's and everyone at 3300?

Quote:
Originally Posted by BlwnTA View Post
Read my post "dummy"...I said brakelights...not tailights. How about we hook your brakelights up to your throttle cable....that would tell an interesting story from the starting line...especially at night, lol. It would look like a disco party down the 1320'
I LOLed a little.

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Old 01-31-2010, 10:58 PM   #15
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All ls1 powered vehicles should be allowed. Period. We dont care if its in a 55 chevy if it meets the weights/rules in a full body car with factory framerails
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Old 02-01-2010, 12:18 PM   #16
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I believe thats how the rules are written. Doesnt matter if its a 68 Camaro, or an 02 Super Sport.. If its got an LS1 under the hood and meets the other rules, its good to go.
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Old 02-01-2010, 12:33 PM   #17
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Looks like GM bodied entries only Dalton:

Quote:
LSX DRAG RADIAL

GENERAL OVERVIEW
This is a single Power Adder Shootout class developed for LS powered, GM bodied cars or trucks.
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Old 02-01-2010, 12:50 PM   #18
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Quote:
Originally Posted by suicidal racing View Post
man nmca needs to step away from d/r as a whole..

lets see twin 88s have been 6.90s with a small block weighing #100 pounds more then a single turbo deal
single 106mm has been 7.40s with a small block
single 114mm has been 7.20s with a small block

max twins allowed should be 76mm at 100#s more

but hey what do i know ive only been around drag radial for 10yrs
We've been in the 7.2 range with a 106 with very little testing @ 3285 and on 7 cylinder hits, we have made consistent passes .12 faster to the 1/8 mile. The 106 has the capability to go 7.05-7.10 on a perfect pass @ 3300. I'll run any twin 88 small block with a 100# weight break. Thats more than fair.

Fiscus has been 6.9s on perfect passes and I think they were at 3300.
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Old 02-01-2010, 12:55 PM   #19
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Quote:
Originally Posted by ATVracr View Post
DR rules ...

Must be LS based ....

Turbo... 3300lbs.
Supercharger ...3000lbs.
Nitrous ...2800lbs.

Run what you brung under those weights.

I pay to see that class run.
How about....
Turbo(Twins) - 3100
Turbo(single) - 3000lbs.
Supercharger(twin) - 2800
Supercharger(single) ...2700
Nitrous - 2500
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Old 02-01-2010, 01:06 PM   #20
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Quote:
Originally Posted by Phil99vette View Post
How about....
Turbo(Twins) - 3100
Turbo(single) - 3000lbs.
Supercharger(twin) - 2800
Supercharger(single) ...2700
Nitrous - 2500
Damn RUSTangs can get that light but the Fbody guys cant Phil.
put 200lbs on all those and it would be more realistic I think.

I dont think they are going to mess with the DR rules to much anyhow.
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