nasaforums.com

Website:

https://nasachampionships.com/west-event/


Event Registration:

TBA - Opens April 1st

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Dave Balingit

NASA Prototype National Director

Registration is open for both Eastern and Western States Championships.

West @ Thunderhill: https://www.nasaproracing.com/events/2590

East @ Sebring: https://www.nasaproracing.com/events/2591


Back for 2017: pay just $249 now to reserve your entry and the balance is not due until September 18 - when you will receive a link to process the balance automatically. This also locks you in at the most discounted rate listed above. All Early Entry Reservation fees are non-refundable and the last day to secure this registration option is June 30. (Please put your class in the "additional comments" area when completing your purchase.)

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Dave Balingit

NASA Prototype National Director

Will Thunderhill's traditional 101 dba sound limit be enforce?....

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JR Gordon
03' 3.6 996 X51
NASA: ST2 So Cal Champion 2010, 2011
POC: GT3 Champion 2010, 2011

Just emailed Thunderhill, their GM says the limit will be 103db for the event.

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Drew Wadolny
ST Series Leader - NASA Arizona Region
#41 ST2 Mustang

Just for clarification - -

Where is the Noise limit posted/written for Thunderhill for NASA Nationals West ?
I am having difficulty finding this information.

And, could someone tell me exactly how they measure the car sound level - distance, location, equipment ?

We will be able to comply with the sound level requirements - but it helps to have all the information ahead of time.

Thank you,

Regards,

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Roy Turner-Crew Chief #524 UPS Brown- 1978 Porsche 911SC - ST3, GTS4, TT3 - Arizona Regon

I believe that there is a sound measurement shack on the right hand side of the car on the main straight after the exit of turn 15, and that the distance may be 50', but to be certain of that plus any further details, contact the track. - Jim

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Started in a 2001 Audi S4 stage3
Now in a 2000 Honda H2 series Civic

Thanks Jim,

I talked with the T-Hill GM and he provided excellent information about their 103 dbA sound level compliance checking -
Yes, the testing equipment is 50' on the outside (paddock side) of the turn 15 coming onto the Start/Finish straight -
there is a microphone outside and a person inside the booth/shack checking cars for compliance. It is OK to use directional exhaust
pipes - HOWEVER, the course flag station workers will also be listening for loud exhaust on the inside of the track and may
Black flag a car if they think it does not comply with the 103 dbA level . . . (???) . . . it sounds like T-Hill is serious about
the 103 dbA compliance . . . which really isn't too restrictive except for some of us 108 dbA cars - and 5 dbA is a lot of
energy reduction . . .

We have a muffler to meet a 96 dbA level and will be using that for the NASA Nationals . . .

Regards,

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Roy Turner-Crew Chief #524 UPS Brown- 1978 Porsche 911SC - ST3, GTS4, TT3 - Arizona Regon