Thread:

a step up from an A impeller

Got a stainless A and I can still turn 6700 rpm. Want to move some more water what would be a good cut?

How many RPM do you want to turn?

Originally Posted by EVILFORCE

How many RPM do you want to turn?

What kind of engine do you have?

Have a blown 540 1100 HP. Thought maybe I should keep the rpm around 6 and maybe get an impeller with a lil more bite.

Dayum! What RPM did it make 1100@? you in another Gullwing?
TRG

Not sure rote off hand I'd have to look at the dyno sheet. Is there a impeller that's bigger then an A? Ya I'm in that 18 footer you set the pump in. It's the white one black interior on my page.

Had real good luck with an A2 in De Clark's 19 Performance with about the same power with a blown 572. 6500 to 6600 . The boat ran between 112 to 115 mph. They make larger impellers but the problem is that you can keep the rpm's down but acceleration is really hurt. Tried an A3, the engine would pull it but it hurt the acceleration.