Baja hooked hull
#1
Anyone know off the top of their head whether a 88 baja 240 sport has a hooked hull? If so has anyone shaved the hook out on this boat or any similar and what performance changes were seen. I don't have a long straight edge, but used a 4' level and it seems to have a very slight hook (1/16" or less) in that distance.
#2
I have the same hull. My inner chines look like somebody has shaved them down as the gel doesn't match up. I haven't had a chance to put my straight edge on it yet. Will check it out next time I'm home.
Just about all Baja's have a hook in them.
Just about all Baja's have a hook in them.
#3
What engine do you have in yours? I find with the trim tabs all the way up, the prop will cavitate before the boat will start porposing. Which leads me to believe that something is forcing the bow down. Only thing I can think is the hull having a hook. I'm running a 454 330hp and a 23p mirage prop. Haven't run it wot for long time to see what top end is, since the motors only got 16 hours on it, but it gets up around 60, 61 mph gps.
#4
I have a 96ish 330hp 454. WIth a 23 Mirage plus it would do high 50's around 4700 rpm, usually run a 22 Bravo. Never seen the boat crack 60. At least from what I remember, haven't ran the boat in about a year. Had to tear it about to do transom and stringers
#6
Your right c deezy. Ran it hard yesterday and only saw 55 with 100 gal of fuel. Don't know how much the 600lbs of fuel played. Last season I had a 420hp 454 that was pretty tired and was gettin just over 60mph. Just assumed I would get something close to that since the motor is new. Its only turning 4300 rpm. Shouldn't it be higher than this, around 45-4600? Wonder if I should try a 21 pitch prop. Anyone have any ideas what changes I would see with that or what prop I should try? I'd also like to try a 4 blade and see what happens.
#7
I think the operating range for the 330 (Merc spec) is 4200-4600 rpm. With a 22P Bravo I could run it up to about 4800 after trimming it out. It might not be a bad idea to try a 21P Mirage if you can get your hands on one.
A few other things to try/verify:
1) Weigh your boat at a weigh station and find out how much weight you are trying to push around. I filled mine up with fuel, and ran it through the scales with all my junk in it that I usually carry around. Then I went back with the empty trailer, my boat itself was around 5200 lbs fully loaded (6500 w/ trailer).
2) Measure your x-dimension. Mine was right around 15 inches, which puts the propshaft about 6-6.5" below the hull, pretty deep.
The 240 is big heavy deep-v boat (for a 24 footer), I bought mine to run out on Lake Erie. Its a solid boat and can take a beating but you have to put some serious horsepower in it to make it go fast. The rule of thumb is usually about 20 hp/mph, so if you were running around 60 with 420, then with the 330 you're running 55, sounds about right.
A few other things to try/verify:
1) Weigh your boat at a weigh station and find out how much weight you are trying to push around. I filled mine up with fuel, and ran it through the scales with all my junk in it that I usually carry around. Then I went back with the empty trailer, my boat itself was around 5200 lbs fully loaded (6500 w/ trailer).
2) Measure your x-dimension. Mine was right around 15 inches, which puts the propshaft about 6-6.5" below the hull, pretty deep.
The 240 is big heavy deep-v boat (for a 24 footer), I bought mine to run out on Lake Erie. Its a solid boat and can take a beating but you have to put some serious horsepower in it to make it go fast. The rule of thumb is usually about 20 hp/mph, so if you were running around 60 with 420, then with the 330 you're running 55, sounds about right.
#8
Thanks for the advice. I'll do that and see what it weighs. Like you said, and alot of other people have told me, it'll take lots of hp to move that hull fast. But I guess I should be happy cause in rougher water, it rides great for a 24' hull. I can pretty much keep up with larger boats. As far as trying another prop, luckly the marina where I put in at the owner is a merc prop dealer, so he has all the props to try before you buy. I'll see what he says and try out some different ones.
#9
Registered

Joined: Oct 2005
Posts: 1,899
Likes: 20
From: Millstadt, IL
You should have a 21 pitch mirage prop on that boat and should see about 55-56 MPH GPS. The "Dream O Meter" should read about 58. Baja has what I would call wedges on the outer strakes. They do not effect me any more because my boat free's up around 62 MPH and they are not longer in the water. When my boat ran 55 it sucked, the boat wanted to porpoise and shinewalk, the wedges would work against your bow lift. My boat rides way better at 70 that it did at 55.
#10
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Joined: Jan 2008
Posts: 44
Likes: 0
Ok question for everyone, A Baja 250 sport with a custom 540 motor.
What speeds can this boat actually handle?
Are these models prone to chine walk around 62mph?
It seems to level out and ride better once 70 is hit.
These baja 250 hulls seem a bit unstable?
Any thoughts or tips on performance handling improvements.
Thanks and Godbless
What speeds can this boat actually handle?
Are these models prone to chine walk around 62mph?
It seems to level out and ride better once 70 is hit.
These baja 250 hulls seem a bit unstable?
Any thoughts or tips on performance handling improvements.
Thanks and Godbless



