HPJunkie

My brother is looking a a Baja 24 outlaw and wants to go 80 (eventually). Anyone have any Idea how much power that may take? Any experienced outlaw hot rodders out there? Thanks Greg

baja2700

I ran the numbers you need to run a 27p prop at 5400 rpms with 13% slip to run 80mph.
with a 25p prop you need to run 5800 rpms.
Your going to need about 600 hp to do it.
I have a 97 24ft outlaw it has an upgraded hp500 engine at 5400 rpms it runs 73mph with a reworked 23p mirage plus prop. This is not the most effiecient hull to start with and I am currently having it blueprinted. I hope to pick up 1.5mph when its done. As a measure of safety you should upgrade the drive components and install hydraulic steering! Good luck with your project!!!!!

HPJunkie

2700, Thanks for your input. Ive blueprinted 2 boats and seen good results. Definatly let me know what happens. I might do my Eliminator next. Thanks Greg

leviathan

Back in 97 we ran 79.37 mph over the kilo run on lake windermere, gaining a class record (national) in a 26 foot mono (1800kg) with a slightly worked 502 EFI (cam, roller rockers, gill/merc ali manifolds, moded throttle body & fuel system) which we reckon made a genuine 460hp, or about 60hp over what we reckon the stock motor really made!

1.36:1 B1 drive with cav plate 4" above bottom of boat, turning a mirage 25 with a little extra pitch (1/2" or so) and a spot more cup. did entire run just touching the 5150 limiter occasionaly. about 10-11% slip

I wouldn't think you would need 600hp unless they're very small horses


26 footer by Exteme marine, poole England.

leviathan

I'd get a better boat & that 600 hp and go 85+!

A B28 mannerfelt with 600hp would be doing closer to the 100!

baja2700

Jon, I ran your numbers and your right at 10% slip with the 1:36 drive you would be doing 80 MPH IN YOUR BOAT!
This hull design has been out about 15 years and its a good rough water boat, heavy about 4500lbs, but its does have stand up bolsters. It is not a very effecient hull and there are hulls out there like Eliminator or Nordic that will do 80 mph in a 25 ft vee with a stock 502. That has nothing to do with this hull!

26scarab

Hey Leviathan,
Maybe I should sell my sub par boat also ! After all why waste my money on this tub when I could just buy a better one !
Sure I would love to have a nice new 42 GTX with some big Sterling power BUT some people (myself) can't afford that unless maybe your footing the bill !!


HPjunkie,
You might need a bit more than 600hp. My boat has a similar hull to yours and has run a best of 81. My power is a N/A 540 9:1 CR , Sterling ported Merlin Ovals, Brodix intake, big solid roller, 1050 and CMI's. I would guess this motor is somewhere between 650 to 675.
Although I was disappointed today , the best I could get was 78 !

baja2700

Scarab 26 I could not agree with you more. I am orginally from Michigan and used to boat on Lake St Claire. Id like to see that 26ft mono hull of his do 80 on a Sunday afternoon out near Gull Island when one of those 1000ft freighters cruises by. By the time they find the pieces it will be in Muscamoot Bay!!!!

leviathan

Sorry guys, didn't mean to offend anyone, but puting together a 600-700hp motor can't be cheap, and then you gotta run it, a more efficient boat could be cheaper in the long run.

baja2700,
with the greatest respect to you and your boat, as a racer/powerboater in the UK, where sea conditions are generally less the nice, I think you should see what happens to the mass produced leasure boats such as baja, htm, donzi etc when they've been used in anger over here in our waters before you assume one of our custom builders boats would fall appart! I would welcome you anytime to run in our Cowes-Torquay-Cowes race with your Baja, and would not grin in the slightest when it was taken home in a basket. As a general rule, you won't find the flimsey light weight, ultra quick boats, which I assume you think the Extreme 26 must be, being made in the UK, as they really wouldn't last five mins. Being resonably efficient doesn't automatically mean it will be an 'egg carton' in the structures department!

And again, with the greatest respect, I think a 24' sports boat that requires in excess of 600hp to do 80mph must have a lot more wrong than just being heavy!

Like I said, 650hp aint gonna be cheap, to build, or run, why not just try a more efficient hull.

(now putting on flack jacket and retireing to garden shed)


P.S. why all this talk about money, and me footing the bill? I never suggested you spend MORE money, and I certainly haven't got any spare. I just said spend what you have on a boat that does 80 with sensible power, as doing 80mph is YOUR requirement.

Smitty

I have a 24 Outlaw with 550 hp that runs 75 on GPS in perfect conditions. I can guarantee you that you will need at least 650 hp to go 80. This hull is not a fast one but it handles very well. I'd look at no less than a 540 for N/A option or you could go with a mild 502 at 450 hp then put a Whipplecharger on it. The acceleration with the blower is addicting !!! Hope you have deep pockets for this project regardless of what engine you go with.

Also it is mandatory to upgrade to full hydraulic steering setup.