Yes you want that much water pressure or you will hot spot the motor. Pfaff says the more the better we stayed around 30 max. It's just the water pressure usually the more drag you are creating with a thru hull pick up.

Thank-you

Should have brought it to the shootout! Perfect conditions to see what it will do in a true mile. In your class top speed was like 116mph.

I am surprised your XR drive will hold up behind that much hp. Be careful increasing your prop size, etc.. As you decrease your slip, you'll see bigger numbers, but you're also putting more stress on that drive. I tore through 4 bravo style drives with lower slip, higher speed prodicing labbed 5 blade props. While I lost some top end moving back to 4 blade props, I haven't blown a drive in 3 seasons (knock on wood).

10 4 buddy thank u

For sure next year!! She is not done yet....this week I hope.

What hp do you estimate this engine to make?

It makes 1100hp on a safe pump tune!!! Next is a drive........not sure what one maybe you can help. :) :)

Skydog

Congrat's.. That is some serious power and a very unique concept for boating