Exhausts allowed at track days? - SV650.org

25-03-11, 11:47 AM

What is the rule with aftermarket exhausts at trackdays? Is there a DB limit to adhere to? I've just got a scorpion street extreme, I'm assuming that will be ok at least with the baffle in to meet noise regulations?

25-03-11, 01:34 PM

Depends on the track and the date as they have quiet days as well as noisey days.

Its runs from 98db (quiet day Donnington to 105db Anglesea).

Typically its 102 - 103db.

Its tested at 5500 revs on an SV650.

Paul the 6th · 25-03-11, 02:25 PM

sv with a baffled road legal can should have been ok I would have thought. Inline 4's with track only exhausts are on the border line

can't remember exact numbers but my gsxr had a yoshi rs3 race can on it & even with the engine running hot as fook (108 on the temp display) it still registerred 105.8 at cadwell last year = the limit was 105 but the lady in the holding area was kind enough to let me through

25-03-11, 02:29 PM

My SV has a M4 Full System and was tested at 103db 5,500rpm, the limit being 105db for our event at Cadwell Park.

25-03-11, 04:22 PM

My SV with full titanium Akra was 100db at 5k

Nick_69 · 26-03-11, 05:39 PM

You should b fine at most places because normally they only want you to rev it to around half, but if you ever go castle combe they are a lot stricter and make you rev it to 3/4 which is really stupid

fizzwheel · 26-03-11, 06:52 PM

They are a lot stricter at Castle Combe, because some NIMBY residents who moved their long after the circuit was opened, started complaining about the noise. The circuit is under constant threat of being shut down.

25-03-11, 11:47 AM	#1
skithepowder Guest Posts: n/a	Exhausts allowed at track days? What is the rule with aftermarket exhausts at trackdays? Is there a DB limit to adhere to? I've just got a scorpion street extreme, I'm assuming that will be ok at least with the baffle in to meet noise regulations?

25-03-11, 01:34 PM	#2
hardhat_harry Guest Posts: n/a	Re: Exhausts allowed at track days? Depends on the track and the date as they have quiet days as well as noisey days. Its runs from 98db (quiet day Donnington to 105db Anglesea). Typically its 102 - 103db. Its tested at 5500 revs on an SV650. Last edited by hardhat_harry; 25-03-11 at 01:37 PM.

25-03-11, 02:25 PM	#3
Paul the 6th Member Mega Poster Join Date: Mar 2007 Location: Yorkshire Posts: 4,790	Re: Exhausts allowed at track days? sv with a baffled road legal can should have been ok I would have thought. Inline 4's with track only exhausts are on the border line can't remember exact numbers but my gsxr had a yoshi rs3 race can on it & even with the engine running hot as fook (108 on the temp display) it still registerred 105.8 at cadwell last year = the limit was 105 but the lady in the holding area was kind enough to let me through __________________ RIP Reeder 20/07/1988 - 21/03/2012 - You were awesome Cbf600, sv650, sv1000, gsxr 750 srad, KTM adventure 950, gsxr 750 k1, gsxr 750 srad, fazer 1000, zx9r ninja..

25-03-11, 02:29 PM	#4
Bigmitch Guest Posts: n/a	Re: Exhausts allowed at track days? My SV has a M4 Full System and was tested at 103db 5,500rpm, the limit being 105db for our event at Cadwell Park.

25-03-11, 04:22 PM	#5
hardhat_harry Guest Posts: n/a	Re: Exhausts allowed at track days? My SV with full titanium Akra was 100db at 5k

26-03-11, 05:39 PM	#6
Nick_69 Member Join Date: Jul 2009 Location: Guildford, surrey Posts: 785	Re: Exhausts allowed at track days? You should b fine at most places because normally they only want you to rev it to around half, but if you ever go castle combe they are a lot stricter and make you rev it to 3/4 which is really stupid __________________ Was SV650S K9 Now GSXR 600 K9

26-03-11, 06:52 PM	#7
fizzwheel Super Moderator Mega Poster Join Date: Dec 2003 Location: Somerset Posts: 3,614	Re: Exhausts allowed at track days? They are a lot stricter at Castle Combe, because some NIMBY residents who moved their long after the circuit was opened, started complaining about the noise. The circuit is under constant threat of being shut down. __________________ Look Dave, I can see you're really upset about this. I honestly think you ought to sit down calmly, take a stress pill, and think things over. K5 GSXR 750 Anniversary Edition

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