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View Full Version : NMRA TO USE NEW dB NOISE RULE???


Joey Bridge
03-29-2006, 10:51 AM
If people are worried about who has a muffler who doesn't and is that a real muffler why don't we just take a page from the NHRA rule book and make it a simple 'dB noise test'.
This would clear up all the grey area's and make for a level playing field.

A dB meter can be easily obtained from Radio Shack so there is no excuse why someone couldn't test there car before the race.

Below is a copy/paste from the NHRA rule book:

All Super Comp, Super Gas, and Super Street cars at national events must not exceed a noise level of 110 dB during static testing. Static testing will be done using a handheld meter 50 feet from, and perpendicular to, the race car while the engine is at a no-load rpm of 3,500. All cars will be tested during technical inspection and some at random intervals throughout the event.

On-track levels also will be monitored, and any pair of cars exceeding 112 dB at the starting line or 114 dB at the 60-foot mark will be flagged for another static test.

331cobra
03-29-2006, 10:55 AM
I'm in for that one. :D

Uncle Robin
03-29-2006, 11:10 AM
It's gets interesting, as a Turbo guy I would have no problem with that type of rule. My old Turbo had minimal mufflers and the air being sucked in the intake was louder than the exhaust.

It would hurt the Supercharged and NOS cars more than the turbo cars.

Sounds like a way to slow them down.


Robin

Jeff@TCI
03-29-2006, 11:38 AM
Yea that a good idea, maybe TB will like that rule...... :eek:

gilmoujr
03-29-2006, 11:47 AM
You will eliminate ALL of the bracket cars if that is enforced... :)

oRaNgeT-76
03-29-2006, 12:02 PM
i think this is an excellent idea .......lets see everyone deal with 65+ lbs of exhaust back pressure :D

ChrisEvans
03-29-2006, 01:32 PM
Every car w/bullets is screwed!! Especially Jason lee...I don't think anyones car is as LOUD as that thing!!!:eek:

Silver35thGt
03-29-2006, 02:00 PM
Hooker aerochambers quieted my car down a ton and I didnt lose and ounce of power over the bullets and Im making right around 1100 at the tire...

BK50
03-29-2006, 02:12 PM
Every car w/bullets is screwed!! Especially Jason lee...I don't think anyones car is as LOUD as that thing!!!:eek:

Jason who? WHAT....??? ;) :D


Bill

radialcoupe
03-29-2006, 02:49 PM
Every car w/bullets is screwed!! Especially Jason lee...I don't think anyones car is as LOUD as that thing!!!:eek:

i dunno, i think matt reese is up there with jason



chris

BK50
03-29-2006, 03:16 PM
i dunno, i think matt reese is up there with jason



chris

I hear thats going to change....ssshh;)


Bill

radialcoupe
03-29-2006, 03:31 PM
I hear thats going to change....ssshh;)


Bill
i heard that too, a lil birdie told me of a bright blue car that will be just as loud :D

BK50
03-29-2006, 05:20 PM
i heard that too, a lil birdie told me of a bright blue car that will be just as loud :D

Things that make you go hhmmnn...:D


Bill

MV50
03-29-2006, 06:22 PM
Not a good idea...............:eek:

CHRIS TUTEN
03-29-2006, 09:32 PM
You will eliminate ALL of the bracket cars if that is enforced... :)


OMG! that is friggin hilarious.