track day noise test R300

[robn]

Evening

 

Anybody got any experienc of getting a standard (complete with cat), roller barrell throttle body R300 through noise tests at 105db and 98db? I don't want to commit my hard earned to a track day and fail on noise so any advice is welcome.

 

thanks in advance

 

Rob

[Peter Carmichael]

Not based on specific R300 experience, but ...

...98dbA = no chance

.. 105dbA = should be fine

[shn7]

Planning a trip to Goodwood 😬.

 

Agree with Peter. 98 unlikely, 105 should be fine.

 

Best thing is to get down to the track on a day when there's a trackday on and ask the marshalls to noise test your car. No charge.

 

Steve.

Not forgetting Percy the Polar Bear

[Jason Plato]

depends if its a drive by test or a static test .

 

for static at 98 db you will either need a R300 silencer in tip top condition ( mine reads 98db) or a longer silencer - available as an option from Caterham .

 

Dave

[Mike C.]

Or a c/f airbox.

 

Mad Manx

[Tiff]

Mine (similarly set up) was tested at Croft 2 weeks ago by the circuit and a static test at 4,500rpm gave a reading of 98.5db.

I was also tested a year ago by a mate - on drive by on the finishing straight at Croft going flat out at 102db.

I haven't had a problem at Oulton Park (tested static) but I can'ttell you what the reading is.

My exhaust can is showing some browning which probably means it could do with repacking (3 years old, 14K miles, 14 trackdays).

[knowley]

My R300 has, in the past, got through on 98dB static tests at trackdays . A couple of weeks ago she measure 98.2dB at Abingdon airfield, it was a damp morning (I believe the weather can effect the readings). Similar to Tiff my car is 3/4 years old now, 10k miles, and countless trackdays.