Someone please explain to me
- Thread starter blk00z28
- Start date
canadian
sy in progress
wastegate = bleed off exhaust gasses (usually before the turbo on the crossover).
blow off valve = bleed off pressurized air (usually after the turbo and before the throttle body) when you let off the gas and the throttle blades snap shut, there's no where for the air to go except back to the turbo. blow off valve will open to allow the air to go to the atmosphere before causing the turbo to revert.
think that's it.
blow off valve = bleed off pressurized air (usually after the turbo and before the throttle body) when you let off the gas and the throttle blades snap shut, there's no where for the air to go except back to the turbo. blow off valve will open to allow the air to go to the atmosphere before causing the turbo to revert.
think that's it.
I'll take a shot at a general description for you:
they are the same in concept for how they work. Both rely on a vacuum source, and both deal w/ boost. functionality wise the bov installed on the intake charge, the wastegate is on the exhaust charge.
bov bleeds off boost during shifting or if not accelerating so your turbo isn't getting backpressure (trying to charge air into closed throttle body blades)and can help attempt to protect from overboost (i.e. not reliable form of protection). bov is NOT uses to regulate your boost pressure.
wastegate is used to control/regulate your boost pressure. Also is a more reliable form of overboost protection.
In the general scheme of things....bov just conserves your turbo by making it not try to blow into a closed throttle body (makes the whoosh sound you here on manual tranny turbo'd cars). Wastegate controls your boost.
they are the same in concept for how they work. Both rely on a vacuum source, and both deal w/ boost. functionality wise the bov installed on the intake charge, the wastegate is on the exhaust charge.
bov bleeds off boost during shifting or if not accelerating so your turbo isn't getting backpressure (trying to charge air into closed throttle body blades)and can help attempt to protect from overboost (i.e. not reliable form of protection). bov is NOT uses to regulate your boost pressure.
wastegate is used to control/regulate your boost pressure. Also is a more reliable form of overboost protection.
In the general scheme of things....bov just conserves your turbo by making it not try to blow into a closed throttle body (makes the whoosh sound you here on manual tranny turbo'd cars). Wastegate controls your boost.
THEMADTYPH00N
Active member
S4Vince said:
A manifold vacuum source.
