25 O/L with 600-650 hp
#41
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Re: 25 O/L with 600-650 hp
Originally Posted by Chase910
C'mon, Baja's own website posts a boatest and the boat did 65 with a 496HO, show us a magazine test of a 25 OL w/ 496HO running near 70, let alone 72. You shouldn't be surprised to see someone disagree with you and/or ask for proof...as in pictures or video. Hard to believe your old boat ran 7mph faster with a labbed prop and minor exhaust mods. Are you sure you're not talking speedo numbers???
Because either you're boat is some 500-700 lbs lighter than other 25 OL's or your engine is really a 500hp.
Because either you're boat is some 500-700 lbs lighter than other 25 OL's or your engine is really a 500hp.
I'l take your words as a request and promise I will film my 25 OL at 70 mph showing both the livorsi speedo and the GPS... My first launch should happen in May... I would'nt be surprise to break the 72 mph mark at that time of the year.
#43
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Re: 25 O/L with 600-650 hp
Originally Posted by yesrej
i will do the same and i will be in the water in april. do you want to put your money where your mouth is.lol
#44
Re: 25 O/L with 600-650 hp
Originally Posted by yesrej
i will do the same and i will be in the water in april. do you want to put your money where your mouth is.lol
My 288 runs 67-69 GPS w/ full 110 gallons of fuel and 4 people,, will run 70-71 w/ half fuel and 2 people,, lets hit the river this year and see who pulls who ??? Sounds like we should be dead even...
#45
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Join Date: Jul 2003
Location: Lake St. Clair
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Re: 25 O/L with 600-650 hp
A 23 pitch prop, 5000 RpM, 11% slip which is probably a bit optimistic would get you approx. 64.6 MPH. Even if you had the prop re-pitched to 25 pitch, 11% slip would get you approx. 70 MPH. 15% slip is more like it in a single engine V-bottom, that would get you 67MPH with the 25 pitch. So anyone who says they're running 70 with a 23 pitch prop, 496ho would have to turn about 5500 RPM which I have never heard of. Just my $.02.
#46
Re: 25 O/L with 600-650 hp
My baja ran around 11% prop slip,, my 288 runs around 16%
But your right,, 23P @ 5150 @ 10% prop slip is 67.5
But your right,, 23P @ 5150 @ 10% prop slip is 67.5
Last edited by Chris288; 02-14-2006 at 09:43 AM.
#47
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Re: 25 O/L with 600-650 hp
Originally Posted by JS232
I'l take your words as a request and promise I will film my 25 OL at 70 mph showing both the livorsi speedo and the GPS... My first launch should happen in May... I would'nt be surprise to break the 72 mph mark at that time of the year.
It would be interesting to see what the Livorsi speedo reads, I've seen them read 3 mph high to sometimes lower than GPS readings.