Engine done! Need a prop!
 

You may know from my past thread of my situation. I blew my 502 last season and had a stroker motor built(548 cubes). The boat is a 24 baja outlaw. Well I finally picked up my engine last week. It dynoed at 545 horsepower and 638 foot/lbs. of torque. Peak power was at 5000 rpms. Not too bad. I am hoping this will help with my prop selection. I had some good suggestions last time I asked, but I did not have the dyno numbers. I do have a 25 mirage I may try for starters.
Chris

I'm guessing you'll need a 26 or maybe even a labbed 28 Bravo 1 prop. I had about 425 hp in my 24 Outlaw and could spin it to 5100-5200rpms.

I would expect a top end speed of 80, give or take a little.

A 4 blade in the 27 range should get you pretty close. With that motor in that boat I would prop it out to run as high an rpm as the engine builder feels is safe.

Matt

I've got a really nice 3 blade 26" Hydromotive if you'd like to try it. Cheap. I had it on a Baja 226ES with a big motor and it worked very well.

I have a 4 blade 27 Hydro that i may be looking to sell. I ran this on my 25 Checkmate with 560hp.

Re: Engine done! Need a prop!
 

try the 25 and we may need to convert it to the ACCLERATOR ,IF WE NEED TO WE CAN PITCH IT UP.

Re: Engine done! Need a prop!
 

Thanks again all for the advice. I bought a 27 hydro 4 blade from hi-perf-2000/
It is a great all around prop. He gave me a fair deal as well. (thanks, Mark)
This prop is not labbed. I am able to spin it to 5000-5100. I would like to see more speed. I have not put a gps to it yet, but see around 73 on the speedo. I am guessing it around 68 on gps. I was hoping to see 5-6mph better. Could this prop be labbed for more top end? Would I get more speed out of a 3 blade? I am not having any problems getting on plane. It would come up like a ski boat if wanted. So I am willing to give up a little on the low end.
Thanks,
Chris

Re: Engine done! Need a prop!
 

If its a Q4, then its really not a good prop for a 24 Outlaw. They give too much stern lift, and 24 Outlaws need bow lift. Try a 28 Bravo 1.

Re: Engine done! Need a prop!
 

It seems as if the problem you have now is too much stern-lift. The slip is too high and this could be caused by several things, one of them being a stern-liftin prop such as the Quad IV. You have some options. Keep the prop. It can be worked to reduce the stern lift and get the slip where it needs to be.

Other options would be to go with a prop with more box lift such as the Mirage Plus, Bravo 1, or Quad IVX.

At what rpm was max torque?

Matt

Re: Engine done! Need a prop!
 

Back in 2002, I had a 540/640 in my 1989 24 Outlaw (Sport 240 back then) Hit 77 on GPS before I blew the motor. running a labbed 25 3 blader at 5400.

Re: Engine done! Need a prop!
 

CHRIS Thanks for the order,Darin

Re: Engine done! Need a prop!
 

I've got a 95 24 Outlaw with around 540 hp and 700 torque. I run a labbed 26" Bravo 1 to 5000 rpm and will do 75 on GPS. I had a Hydromotive but never got any speed out of it. You need a Bravo 1. I would start with a 26" and see where you're revs are. You might then need to go to a 28"

Good Luck

Re: Engine done! Need a prop!
 

Just be freekin' carefull. You have to be coming up on the design limit of that hull. If you find chine walking to be a problem, the Q4 Hydromotive will help stabilize the hull. That prop will suck getting on plane. It won't be as bad as a 3 blade Mirage though. The bravo will plane very well and will offer a good top end. I'd try all 3 props.

Re: Engine done! Need a prop!
 

You must have seen my private message.ITS THE SAME. :rolleyes: :D

Re: Engine done! Need a prop!
 

Guys,
I switched back to my 25 mirage. The hydromotive just wasn't geared for this boat. I am now running 72mph on gps at 5400-5500 rpms. I was wondering if someone had a 27 mirage or a 26 or 28 bravo. I was also wondering what it would cost to rework my prop to fit my needs. My torque peak on the engine was around 4900-5000. Thanks again.

Re: Engine done! Need a prop!
 

24outlaw, do you want to sell the Hydro 27 ? If so PM me I may be able to use it. I just put my motor in my 25 checkmate and they love Hydro's. We dyno'd it @ 646hp at 5600rpm. Thanks to JimV. We will water test in the AM

Re: Engine done! Need a prop!
 

I have a 27 pitch ACCLERATOR plus you can try, its polished and like new,let me know and I will ship it to you to try out.

Re: Engine done! Need a prop!
 

I have a 24 outlaw with about 450 hp. I was wondering what the accelerator prop is? I currently have a labbed 24 Bravo 1. I have not been able to go for a top end speed yet because I injured my knee. Last year with a 3 blade mirage 23 with added pitch and cup, I was able to hit 68 on gps. I have since rebuilt the motor and expect some more hp. Just wondering what the accelerator is?

Thanks
Allen