fot
[Top] [All Lists]

Re: Unmuffled race engine dB level

To: Henry Frye <thefryes@iconn.net>, fot@autox.team.net
Subject: Re: Unmuffled race engine dB level
From: Don Marshall <marshall@nefcom.net>
Date: Wed, 21 Mar 2001 18:03:20 -0500
At 12:22 PM 3/21/01 -0500, Henry Frye wrote:
>Dean VanDeCarr tells us his club is offering an hour of track time plus a 
>couple timed laps at Lime Rock on Saturday. Not all that unreasonably 
>priced, either. I was getting excited until I see on their application they 
>require muffled cars to keep the noise down to a level of 81 dB moving and 
>74 dB stationary.
>
>That seems pretty darn quiet. My race car has the typical 4->1 header into 
>a flex pipe into solid 3 inch pipe exiting the back of the car. Anyone care 
>to guess how loud I am? Think they would let me run? Dean?

Henry... I've got a 3" pipe turned down slightly ahead of the diff and I
recorded consistently between 96 and 100 at Roebling Rd last year, where
the track limit is 105.

Regards,
Don 

<Prev in Thread] Current Thread [Next in Thread>