legal exhaust noise level?
14 January 2002, 06:26 PM
#2
Not sure of the limit - depends if it is a static reading or drive-by, revs, throttle opening etc Someone in the motor industry must know as production cars must comply. Having said all that if you need a check I have a dB meter if you are anywhere near me.
JohnD
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14 January 2002, 06:51 PM
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I was told that noise level is not checked for MOT's, just emissions.
So if it's the MOT you are after you should be ok.
For example, my car has a fairly loud open pipe (a bit illegal ocifer) with no CATs. My garage just puts a cat back in for the MOT then takes it straight back out again (for £40).
Hope this helps.
So if it's the MOT you are after you should be ok.
For example, my car has a fairly loud open pipe (a bit illegal ocifer) with no CATs. My garage just puts a cat back in for the MOT then takes it straight back out again (for £40).
Hope this helps.
14 January 2002, 07:14 PM
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thanx! its not for my scooby but my dads c-type jag,the straight through exhausts might be too loud for a track day at goodwood,he doesnt want to get turned away and loose his money! as if its too loud he will take his e-type!
will bear you in mind thanx john will see wot he says
steve
will bear you in mind thanx john will see wot he says
steve
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15 January 2002, 09:50 AM
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The noise limit at Goodwood depends on what sort of day is being run.
For a Road Traffic day the limits are
Static: 98db, Drive by: 96db
for a Goodwood day:
Static: 105db, Drive by: 101db.
Static is measured by the marshals using a noise meter at 45degrees to the exhaust, 1metre away while the car is at 3/4 max revs. They are 'lenient' with the static readings, but the drive by is strictly enforced as the local council have microphones around the circuit that they monitor from the council offices.
Out of interest does anyone have noise figures for their cars? My scooby registered 88db static, 82 drive by, on the original system.
Matthew
For a Road Traffic day the limits are
Static: 98db, Drive by: 96db
for a Goodwood day:
Static: 105db, Drive by: 101db.
Static is measured by the marshals using a noise meter at 45degrees to the exhaust, 1metre away while the car is at 3/4 max revs. They are 'lenient' with the static readings, but the drive by is strictly enforced as the local council have microphones around the circuit that they monitor from the council offices.
Out of interest does anyone have noise figures for their cars? My scooby registered 88db static, 82 drive by, on the original system.
Matthew
15 January 2002, 10:28 AM
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"Revival" is about the only meet a standard C Type will be able to run at Goodwood. The local authority are very strict.
No problem with landing 140dB of Harrier on the airfield in the middle of the circuit though
Over the years, I have seen the jobs that Hayward & Scott have had to do to such classics, just to appease the local council at Goodwood and Castle Combe etc.
It is sacrilege.
No problem with landing 140dB of Harrier on the airfield in the middle of the circuit though
Over the years, I have seen the jobs that Hayward & Scott have had to do to such classics, just to appease the local council at Goodwood and Castle Combe etc.
It is sacrilege.
15 January 2002, 02:42 PM
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I got 93dB static at Castle Combe IIRC, full Scoobymania exhaust. Bit weedy I thought 
Justin
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15 January 2002, 04:14 PM
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weve run a track day at goodwood for the last two years, the limit has been 98 db, with ten cars on the track at a time, if we had run less cars it would have been 101 db
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15 January 2002, 04:17 PM
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my p1 was dead on 98 db at 5000 rpm with a full scoobysport exhaust, i got pulled after the first session for being too noisy passing the sound meters and the marshall said to back off passing the meters, worked ok
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