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Go Back   Madabout Kitcars Forum > Mad Build Area > Marlin 5exi builds

Marlin 5exi builds Calling all you sexi builders....sorry 5exi builders, show us your progress.

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Old 2nd April 2007, 18:49
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alackofspeed alackofspeed is offline
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Default SVA noise requirements

Does anyone have a digital copy of the SVA manual? I'm wanting to check my car's noise levels against the rules.

For the honda builders:

I'm running a 200 cell cat, and the Marlin silencer. Noise levels @ 1m and 45 degrees to the exhaust (no body fitted) are:

Idle (750 rpm) - 68.6 dBA
2k - 70.6 dBA
3k - 73.6 dBA
4k - 75.1 dBA
5k - 77.2 dBA

In jist it seems, to me, pretty quiet when not under load.


.............

Found the answer

101 dBA @ 75% of max power revs, @ 500mm.

max power is at 7400 rpm, so 5550 for 75%....... problem is there's a rev limiter at 5500 when the car is stationary .

..............

I've now tested the car:

@5500 rpm, just clipping the rev limiter under SVA distance requirements results in 95.6dBA... so the Marlin standard silencer is pretty close to the limit.
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