Rotrex noise discussion

Eric_Oz_S2 · 2013-05-03T02:36:46-05:00

I am using the same supercharger unit as the d1r kit (rotrex c30-94). With mine I am running an 85mm pulley which puts the internal rpm close to its limit at the rev cutout point. When driving on this street you can barely hear the supercharger. However, on the track the unit (apparently) screams like a banshee over about 5000 rpm. In fact, at the track I have been pinged at about 115db. Spectators tell me it is a really loud scream as the car passes at high revs. Inside you can only hear a whistle. I'm interested if anyone else has tracked their car and had similar feedback from trackside spectators. Any ideas on how one might reduce the noise level?

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Rotrex noise discussion

Eric_Oz_S2
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Posts: 343
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Joined: Jun 2010
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#21

05-06-2013, 07:16 AM

So,the d1r kit uses an inlet restrictor if I recall correctly. Does the sc sound different with and without the restrictor?

Tama, if you could post audio that would be great.

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