I had some free time to just think about random things and a question came into my head that I cannot explain but I am sure you guys can...

What makes only some superchargers have that loud whinning noise (for example the cobra, I don't think ours does...?)?


Thanks

 

A roots blower is going to have a really loud whine under load. Is is what you hear on an 2003 Cobra.

Some centrifical supercharges, like the Vortech S-trim that is used with most mustang kits, has a gear drive that producs a loud whistle/whine at idle. The vortech kit for the S2000 uses the SQ-trim blower. This, if I am not mistaken, uses a belt drive system inside and is a bit more quiet.

 

My Vortech has a whine. I've also heard the Comptech on the S2000. It too, has a whine.

 

does it? I've only listened to in car videos of supercharged s2000s and I couldn't hear a whine...might have just been the video equipment. The only whine I've heard was at idle

EDIT: Maybe I should have asked in my original question why is the whine so loud in some compared to relatively less in others

 

When I drive into an S2000 meet, that is the first thing that people notice about my car - the supercharger whine and how intoxicating it is.

As for the variation in noise, this can be attributed to the ratio of gearing of the blower and the type of bearing used. It may also be due to the efficiency of the oiling jacket on the bearing, which can buffer some of the sound.

 

just hearing those superchargers at idle is intoxicating enough, let alone hearing them at full boost!

Thanks for the answers, just a little tidbit I wanted to clear up

One day a supercharger will be within reach...I guess I know what all of my money will be going to this summer, the sound and power is to much to overcome!