Quote:
Originally Posted by SilverStreak
you can not... I repeat CAN NOT install a blow-off valve on the SS/SC. You should do some reading up on your engine and how it works before you try to modify it... roots type blowers are mounted directly to the intake manifold and are equipped with a bypass valve... therefore there is no place to install a blow-off valve... even if you wanted to.
Why is it that every n00b out there asks this question?
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I blame it on the fast and the furious. Seriously before that movie came out the people I knew who had turbocharged cars could care less about the BOV it was just part of the whole system. No one went "sweet BOV". There is something about this new generation of car people that are just all over them. Maybe it's the riddelin?
So Mr. threadstarter your question has been answered. To elaborate further you can't use one and don't need one on a roots supercharger (or a twin screw for that matter) because the function of a BOV is to vent extra pressure between the compressor and the engine when the throttle body is closed. . This helps reduce what is called surging which can warp the fins on the compressor. Since roots type superchargers use rotors and not thin fins it is not needed because there is nothing to warp if the pressure is not released.