Noise / Decibel question - R500 Duratec with Carbon Airbox and Cat

[Silverback]

Quoting Roadracer1977: 

So an update...

As Bedford is my closest circuit (and quite possibly the strictest in the UK in terms of noise) I thought it a good idea to speak to them. I've spoken with Andrew Gardener (at Bedford Autodrome) this morning.

 

He confirmed their noise limits as follows:

101db static

87.5db drive by

If you exceed the drive by you are excluded for the rest of the day without warning - based on that I asked how do you know if you're going to trip the drive by? He suggested that if you're under 96db on the static there's practically no chance of you exceeding the drive by.

 

They test the db at 2/3rds of your maximum rev limit.

 

He said so long as he's there I can run the car up there to get it noise tested for free and we can take it from there.

 

Let me know when you might go and he can check both at the time...

[Silverback]

A little update - Chris roughly checked mine while he find my 1,000 mile service check.

 

97dB static

 

So I am pretty close to borderline for Bedford...would still be interested in them checking mine for a 2nd comparative reading but at least it gives me a rough idea of where mine is at.

 

I would expect you to be a couple of dBs above?

[James.S]

It's the induction that is problematic on the R500/400D.The track day air box will help massively, a bigger silencer al la Raceco will also help.

 

Note that circuits like Spa, Zolder, Nurburgring never bother with noise - big hint there on where you should be spending your time. Goldtrack and BAT also do noisy days. Forget places like Bedford, dull as ditchwater and only bother with Brands on GP days.

 

If you want the best though get a Simpson, stunning exhausts, we use them on the rally cars and will use him on the new Caterham project.

 

Last one built for the Escort here

 

Facebook site here

 

Edited by - James.S on 21 Jul 2014 17:28:17