Bedford, noise, S2000?
Discussion
I've just bought a S2000, I would like to do a trackday with lots of runoff, so I can get to grips to what it's capable of?
My problem is it has a full Miltek exhaust system which sounds lovely, but I feel it's going to be too loud for most tracks, especially at 9K RPM!!
I live in the south west which gives little options, but to travel to other end of country! Am happy to travel around 3H.
I would like to do Bedford, but feel I may be a bit too loud?
Does anyone have any experience with the S2000 with a full exhaust, and what DB it's measuring at?
Cheers
My problem is it has a full Miltek exhaust system which sounds lovely, but I feel it's going to be too loud for most tracks, especially at 9K RPM!!
I live in the south west which gives little options, but to travel to other end of country! Am happy to travel around 3H.
I would like to do Bedford, but feel I may be a bit too loud?
Does anyone have any experience with the S2000 with a full exhaust, and what DB it's measuring at?
Cheers
Bedford is a very good track especially if you do the GT circuit,its just up the road from me so i have done a few days there but the noise limits are pretty low.......... 101 DB static and 87.5 drive by and these levels are on the MSV web site http://www.msvtrackdays.com/car/calendar/2014/nov/...
pete
pete
does your S2000 still have the standard cats in place? and is the milltek the exhaust with the two big rear silencers? and is your S2000 still NA? if the answer is yes to all three, i think you'll be fine. Decats add the most noise in my opinion.
if you're southwest way look at motorsport-events for trackdays, they're mainly airfields based around Chippenham way, but occasionally do castle combe which is your neck of the woods.
if you're southwest way look at motorsport-events for trackdays, they're mainly airfields based around Chippenham way, but occasionally do castle combe which is your neck of the woods.
Cheers, I'm pretty sure it's de-catted!
I think it's got a small mid silencer, then one rear silencer with two big tailpipes.
It's not stupidly loud, I would say on par with something like a BMW M3 CSL.
I've just come across these, do these actually work? Worth a go?
http://www.decibeldevil.co.uk
I measured it earlier on my iPhone, so not accurate, but it's measuring 90db at idle, so is it likely to be 10X louder at 9K RPM?
I think it's got a small mid silencer, then one rear silencer with two big tailpipes.
It's not stupidly loud, I would say on par with something like a BMW M3 CSL.
I've just come across these, do these actually work? Worth a go?
http://www.decibeldevil.co.uk
I measured it earlier on my iPhone, so not accurate, but it's measuring 90db at idle, so is it likely to be 10X louder at 9K RPM?
R1 Indy said:
Cheers, I'm pretty sure it's de-catted!
I think it's got a small mid silencer, then one rear silencer with two big tailpipes.
It's not stupidly loud, I would say on par with something like a BMW M3 CSL.
I've just come across these, do these actually work? Worth a go?
http://www.decibeldevil.co.uk
I measured it earlier on my iPhone, so not accurate, but it's measuring 90db at idle, so is it likely to be 10X louder at 9K RPM?
i purchased one of those .............and to be honest the quality wasnt the best i have seen and the first one that was sent was the wrong size but in fairness i never used it on track i managed to get a decent bung so i cant really comment on the noise reduction on track. I think it's got a small mid silencer, then one rear silencer with two big tailpipes.
It's not stupidly loud, I would say on par with something like a BMW M3 CSL.
I've just come across these, do these actually work? Worth a go?
http://www.decibeldevil.co.uk
I measured it earlier on my iPhone, so not accurate, but it's measuring 90db at idle, so is it likely to be 10X louder at 9K RPM?
Or what about one of these each side? Ok it may look a bit silly, but these must surely bring the level down a decent amount?
https://www.merlinmotorsport.co.uk/p/merlin-mild-s...
https://www.merlinmotorsport.co.uk/p/merlin-mild-s...
First thing you need to do is get under your car and have a look to see what you've actually got. No point in guessing.
Find out whether you have a cat in place. Find out if you have a centre section (resonator). Find out how many back boxes you have.
If you have all of the above you will 100% be fine. If you have two of the above you will also probably be fine but worth checking.
I've seen many S2000s on track days.
You may be able to rev to 9k but the static noise test has a 101db limit. That is done at 3/4 of maximum revs.
The drive by limit of 87db is more likely to be an issue. But then you can just let off or short shift past the very visible microphones. (which are 10-20m away from the track)
Find out whether you have a cat in place. Find out if you have a centre section (resonator). Find out how many back boxes you have.
If you have all of the above you will 100% be fine. If you have two of the above you will also probably be fine but worth checking.
I've seen many S2000s on track days.
You may be able to rev to 9k but the static noise test has a 101db limit. That is done at 3/4 of maximum revs.
The drive by limit of 87db is more likely to be an issue. But then you can just let off or short shift past the very visible microphones. (which are 10-20m away from the track)
Worst case. Buy one of these for each tail pipe. Then you won't need to worry either way.
http://www.ebay.co.uk/itm/3-5-Exhaust-Baffle-Bung-...
http://www.ebay.co.uk/itm/3-5-Exhaust-Baffle-Bung-...
If you're in the South West, why not have a look at one of MSE's airfield days? Lots of run off, well designed courses, well run with good driving standards enforced and they have a 100dB limit at 4500 rpm. The noise testers are friendly (unlike another well known SW circuit) and so you can find out how noisy you are without driving half way across the country.
Alternative is to pop in to one of their days (either Castle Combe on 15/11 or Hullavington on 21/11) and get the car tested. At this time of the year, there is also a possibility of getting on track by signing up on the day, so take your helmet and license along just in case.
Alternative is to pop in to one of their days (either Castle Combe on 15/11 or Hullavington on 21/11) and get the car tested. At this time of the year, there is also a possibility of getting on track by signing up on the day, so take your helmet and license along just in case.
I would say you will be fine.
I used to be a regular at Bedford with my S2000. It had an induction kit, after market manifold, decat and Greddy Spectrum Elite exhaust and never had a single issue there. That static tested at 86db if I remember correctly.
I then supercharged it that makes them massively louder and had an extra silencer put in where the decat was and I still got on. I was having to then short shift near the microphones. It also depends on the direction of the wind on the day, it can blow the sound on to the mics or away. That static tested at 96db if I remember correctly.
Either way, with your setup you'll be fine. I wanted to switch to the miltek, it's meant to be a top exhaust from what I read, but I sold the car before trying it.
I used to be a regular at Bedford with my S2000. It had an induction kit, after market manifold, decat and Greddy Spectrum Elite exhaust and never had a single issue there. That static tested at 86db if I remember correctly.
I then supercharged it that makes them massively louder and had an extra silencer put in where the decat was and I still got on. I was having to then short shift near the microphones. It also depends on the direction of the wind on the day, it can blow the sound on to the mics or away. That static tested at 96db if I remember correctly.
Either way, with your setup you'll be fine. I wanted to switch to the miltek, it's meant to be a top exhaust from what I read, but I sold the car before trying it.
Edited by robinandcamera on Monday 10th November 12:53
Great, cheers guys.
I think I will give hullavington in Chippenham a go for a first, as not far from me, loads of runoff by the looks, and should easily pass 100db at 4500rpm. Are there drive by sensors here? Or just static? As can only find static limits?
I will then see what reading I get to see if I need to do anything before going to somewhere like Bedford.
I think I will give hullavington in Chippenham a go for a first, as not far from me, loads of runoff by the looks, and should easily pass 100db at 4500rpm. Are there drive by sensors here? Or just static? As can only find static limits?
I will then see what reading I get to see if I need to do anything before going to somewhere like Bedford.
R1 Indy said:
Great, cheers guys.
I think I will give hullavington in Chippenham a go for a first, as not far from me, loads of runoff by the looks, and should easily pass 100db at 4500rpm. Are there drive by sensors here? Or just static? As can only find static limits?
I will then see what reading I get to see if I need to do anything before going to somewhere like Bedford.
There aren't any drive by meters at Hullavington, so once you are through the static test, you are good to go. MSE also have some very competent instructors, so you could do a lot worse that getting some instruction early in the day, because it will make the rest of the day much more fun.I think I will give hullavington in Chippenham a go for a first, as not far from me, loads of runoff by the looks, and should easily pass 100db at 4500rpm. Are there drive by sensors here? Or just static? As can only find static limits?
I will then see what reading I get to see if I need to do anything before going to somewhere like Bedford.
Stephanie Plum said:
Chr1sch said:
There were a number of s2000's at the last one I did and they were all ok, it's 96db limit static as a point if ref
No. It really isn't 96db static.OP - with your system you will more than likely fail the drive by.
Stephanie Plum said:
Chr1sch said:
There were a number of s2000's at the last one I did and they were all ok, it's 96db limit static as a point if ref
No. It really isn't 96db static.OP - with your system you will more than likely fail the drive by.
As above, the current limits at Bedford are 101dBA static at three quarters of maximum engine speed, and on track 87.5dBA measured at several points (allegedly) 20m away from the circuit. The static is rarely a problem, but particularly for cars which are dramatically louder under load - as most S2000s are - the drive-by limit can be an issue.
MSV police Bedford in a pretty draconian way, and if you break the 87.5dBA driveby limit, they will pull you off and you will not be allowed back out unless you make some modification to the car. Most track day organisers help you out by letting you know if you're getting close to the limit, so if you're really worried it would be worth building your pace up gradually, so they have time to warn you before you hit the limit!
I was there on 1st November and I think only one car got pulled off for noise violations, a race-spec MX-5. Most road cars with cats still in should be OK, but work with the TDO to make sure!
MSV police Bedford in a pretty draconian way, and if you break the 87.5dBA driveby limit, they will pull you off and you will not be allowed back out unless you make some modification to the car. Most track day organisers help you out by letting you know if you're getting close to the limit, so if you're really worried it would be worth building your pace up gradually, so they have time to warn you before you hit the limit!
I was there on 1st November and I think only one car got pulled off for noise violations, a race-spec MX-5. Most road cars with cats still in should be OK, but work with the TDO to make sure!
Have just booked Abington on 6/12 as can't make hullavington next Friday.
Does MSE generally not have many days, or is it because it's end of the year?
Just read the terms, it's actually 3/4 maximum revs for Vtec engined cars!
So 9k max revs, I make this just over 5.5K revs, which I imagine I should be ok with.
Gives me a few weeks to get the car ready!
Does MSE generally not have many days, or is it because it's end of the year?
Just read the terms, it's actually 3/4 maximum revs for Vtec engined cars!
So 9k max revs, I make this just over 5.5K revs, which I imagine I should be ok with.
Gives me a few weeks to get the car ready!
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