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View Full Version : this might be a stupid question but......



stephens89sc
09-24-2002, 03:41 PM
i love blow off valves they sound cool lol ive only really seen them on turbocharged cars but is it possible to put one on my sc ????

David Neibert
09-24-2002, 04:54 PM
Anything is possible, its just a matter of time and money. Our SCs use a bypass valve instead.

Some turbos need a BOV to prevent overboosting when suddenly lifting the throttle, such as when shifting a manual transmission.

Our engines could be equipped with a BOV but it would never open unless you set it lower than your max boost. In that case you would run rich because of venting the metered air to atmosphere.

Ours don't overboost because it is a positive displacment blower with a fixed displacement relative to engine rpms. Suddenly closing the throttle plate increases vacuum and opens the bypass allowing extra air to recirculate back to the intake plenum.

David