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Discussion Starter · #1 ·
With a stock Mercruiser 454 Mag and a stock Bravo 1 what can be expected for top end on average?

What's the best prop for this setup? My first inclination would be a Bravo One or a Hydromotive. Have no idea of pitch though.
 

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22' Daytona with Outboard Verado...

24 bravo labbed was 73 MPH great bottom
26 bravo labbed was 75 MPH
28 et pro lab was 81 MPH 4 blade
30 et pro lab was 85 mph 4 blade (poor holeshot, great top)

The propellers should match up well to your set up ...
speed should be close.

Try as many props as you can !
 

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OK, it's just a WAG, but from what I've seen on the water, 600hp and a shortie drive/ high prop shaft, with the correct prop, should get 100mph or more. It's really going to be about proper setup in that boat.


Darrell.
 

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somebody correct me if im wrong but i think the rule of thumb on a cat is it takes about 15-18 hp for a 1 mph.
I dont think i explained it good enough. from what i read again i do not know if it is right but it starts of at a typical 65 or 75 mph cat since the faster you go it takes more hp to go faster.for example if the 22 daytona has a 400hp and goes 80 mph and you go to 800 hp`it should run 108 mph at 15hp per mph. i understand that there is much more to it like props, etc.i also imagine on a 150mph boat it would not be even close.
 

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Discussion Starter · #11 ·
Yep, setup on this boat would need changing. With a quick check using a tape measure to the floor I came up with the propshaft 5" below the pad. I'm sure if I leveled the boat and drive angle I'd have a much more accurate number. Even if I was off by 2 inches it would still be way to deep for a >80 mph boat. So big money for short drives and nosecones would be needed to get it inline or above the pad to maximize efficiency.

On my previous 21 whacker center pod cat going from 3" below to 1.25" above the pad was only worth 3 mph. That was as simple as a jackplate and a Titus Nosecone for a total bill of $750.00. I can't imagine what a short drive costs.

Looks like there's going to be some discussin with the wife :(:( about going back to OB's so we both can be happy.

Thanks to everyone for your input.

Ken
 

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Yep, setup on this boat would need changing. With a quick check using a tape measure to the floor I came up with the propshaft 5" below the pad. I'm sure if I leveled the boat and drive angle I'd have a much more accurate number. Even if I was off by 2 inches it would still be way to deep for a >80 mph boat. So big money for short drives and nosecones would be needed to get it inline or above the pad to maximize efficiency.

On my previous 21 whacker center pod cat going from 3" below to 1.25" above the pad was only worth 3 mph. That was as simple as a jackplate and a Titus Nosecone for a total bill of $750.00. I can't imagine what a short drive costs.

Looks like there's going to be some discussin with the wife :(:( about going back to OB's so we both can be happy.

Thanks to everyone for your input.

Ken
I own a 1992 22 daytona and you are dead on the x demension.i measured mine and it is 5.5.i f you want to go fast with little power go with the 22 daytona with the blackhawk bottom.they ran around 105 with like 600hp.
 

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In #06 bulit 2 -22 daytonas with bullhead bully 1- with outboard and 1-w/496 ho high x-dem mid 80's Bullhead bully has bought more boats frm bob leach than anyone Bully took or wish list to Bob about new 22 hull design. The 1st set up was a 525 package w/ bravo XR drive high X ran 97 mph 2nd boat twin 300xs merc outboards 115 mph 100mph at 3 mpg
 

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When you raised the motor from 3in below to 1.5 above did you change the prop or keep the same one? You probably had a 300 with a low limiter so when you moved it up it put you on the limiter which is why you only gained 3mph.






Yep, setup on this boat would need

changing. With a quick check using a tape measure to the floor I came up with the propshaft 5" below the pad. I'm sure if I leveled the boat and drive angle I'd have a much more accurate number. Even if I was off by 2 inches it would still be way to deep for a >80 mph boat. So big money for short drives and nosecones would be needed to get it inline or above the pad to maximize efficiency.

On my previous 21 whacker center pod cat going from 3" below to 1.25" above the pad was only worth 3 mph. That was as simple as a jackplate and a Titus Nosecone for a total bill of $750.00. I can't imagine what a short drive costs.

Looks like there's going to be some discussin with the wife :(:( about going back to OB's so we both can be happy.

Thanks to everyone for your input.

Ken
 

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I had a 22 with the black hawk bottom. That bottom works well. It has a imco outdrive with a 3" shorter lower. I was building a high horsepower 565" chevy for it. I had to sell to buy a house but my friend bought it less motor and put a stock 300 hp motor in front of it. I bet it doesnt even make that. Its a oval port motor and is stock! It does around 80 with a bravo 26 pitch I believe.
 

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Had a 95 22 daytona with stock 502 efi added m-1 procharger 5psi emi exh 30p prop fastest ever got it was 90mph with no ecm mods rev limit was 5000 elavation where i live is 4000ft hope this helps;) Almost forgot stock bavo 1
 
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