I need POWER
Thread Starter
5th Gear Member
Joined: Apr 2005
Posts: 4,083
From: Richmond, Virginia
So do they produce the same amount of boost instantly and throughout the RPM? So like... 9 PSI from 700-6800? Sorry... just trying to learn here 
I'd like to know about what I'm buying before I buy it.
I'd like to know about what I'm buying before I buy it.
6th Gear Member
Joined: Jan 2007
Posts: 5,884
From: MI
compared to an NA engine they dont. compared to a positive displacement blower everything lags and turbos only lag if they are setup wrong. the reason is design. centrifugals and turbos makes more boost the faster they spin. because a centrifugal is restricted by the engine directly on how fast it spins it will lag compared to a turbo. plus they operate in vacuum at low RPMs (under 2500 from my experiance)
6th Gear Member
Joined: Jan 2007
Posts: 5,884
From: MI
The turbo dyno graph looks a lot like my nitrous graph in how it ramps almost straight up when it spools.
What's interesting between the other two is where the torque is made. At first glance the twin screw appears more impressive (and it is of course at lower rpm) but then the centrifugal carries the torque curve better in the higher rpm's. Of course it's not a fair comparison due to one having much higher overall power. I'd love to see a comparison between the two when they both have equal peak numbers.
What's interesting between the other two is where the torque is made. At first glance the twin screw appears more impressive (and it is of course at lower rpm) but then the centrifugal carries the torque curve better in the higher rpm's. Of course it's not a fair comparison due to one having much higher overall power. I'd love to see a comparison between the two when they both have equal peak numbers.
4th Gear Member
Joined: Mar 2010
Posts: 1,232
From: GA
The turbo dyno graph looks a lot like my nitrous graph in how it ramps almost straight up when it spools.
What's interesting between the other two is where the torque is made. At first glance the twin screw appears more impressive (and it is of course at lower rpm) but then the centrifugal carries the torque curve better in the higher rpm's. Of course it's not a fair comparison due to one having much higher overall power. I'd love to see a comparison between the two when they both have equal peak numbers.
What's interesting between the other two is where the torque is made. At first glance the twin screw appears more impressive (and it is of course at lower rpm) but then the centrifugal carries the torque curve better in the higher rpm's. Of course it's not a fair comparison due to one having much higher overall power. I'd love to see a comparison between the two when they both have equal peak numbers.