It’s actually more like Toyota’s old ACIS (And similar to T-VIS), My old Celica had ACIS where butterflies opened or closed a resonance chamber to change the apparent length of the intake. T-VIS had 8 inlet ports with a set of butterfly valves keeping 4 closed at low RPMs, meaning a smaller diameter inlet and thus higher air velocity
i truly have masculin feelings of love for Jason :D he enriches my world!
I love the BRAP drawing!
VIS just kicked in YO!
And all this is removed and the ports enlarged hence more brap the ports are extend and eventually the divide or “bridge” is actually machined off making the 2 ports one with further reducing restrictions meaning more brap and power. Tvis gets deleted from Toyota’s, Subaru and Nissan’s for better air flow the gains of having negates top end exception is vtec which is a cam profile change as it doesn’t run very nicely and low speed when engaged
Those modifications butcher low end torque for a better top end. The whole idea with these is drivability. You don’t want to rev the nuts off the car just to drive around town at a decent pace
Do rotary engines have to have equal length exhaust pipes just like regular engines?
So is this affected when the engine is bridge ported and if so, what does it do?
seriously looking forward to an answer too !!!
So basically its a power valve thats in a 2 stroke motor
Comments
It’s actually more like Toyota’s old ACIS (And similar to T-VIS), My old Celica had ACIS where butterflies opened or closed a resonance chamber to change the apparent length of the intake. T-VIS had 8 inlet ports with a set of butterfly valves keeping 4 closed at low RPMs, meaning a smaller diameter inlet and thus higher air velocity
i truly have masculin feelings of love for Jason :D
he enriches my world!
I love the BRAP drawing!
VIS just kicked in YO!
And all this is removed and the ports enlarged hence more brap the ports are extend and eventually the divide or “bridge” is actually machined off making the 2 ports one with further reducing restrictions meaning more brap and power. Tvis gets deleted from Toyota’s, Subaru and Nissan’s for better air flow the gains of having negates top end exception is vtec which is a cam profile change as it doesn’t run very nicely and low speed when engaged
Those modifications butcher low end torque for a better top end. The whole idea with these is drivability. You don’t want to rev the nuts off the car just to drive around town at a decent pace
Do rotary engines have to have equal length exhaust pipes just like regular engines?
So is this affected when the engine is bridge ported and if so, what does it do?
seriously looking forward to an answer too !!!
So basically its a power valve thats in a 2 stroke motor