estimated speed for baja h2x
06-23-2011, 12:45 PM
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estimated speed for baja h2x
buddy of mine just bougght a 1999 baja h2x with a 502 mag mpi and a 23 m+ prop. he was told it will run 85 mph but thats according to the speedo. any guesses on what true gps speed should be with this boat?
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06-23-2011, 01:17 PM
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Even 70 is rather impossible with the stock 502. With a labbed prop and right setup 68-69ish. A 25OL is a 65 mph boat with a 496HO. A little heavier but also a bit more efficient. So more or less the same.
That thing will need a 600sci to run 85. Even at 70 slip would have to be around 5% @ 5100. 85 @ 5100 rpms -15%
There it is again, the magical negative slip. I want that in my life
Even 70 is rather impossible with the stock 502. With a labbed prop and right setup 68-69ish. A 25OL is a 65 mph boat with a 496HO. A little heavier but also a bit more efficient. So more or less the same.
That thing will need a 600sci to run 85. Even at 70 slip would have to be around 5% @ 5100. 85 @ 5100 rpms -15%
There it is again, the magical negative slip. I want that in my life
Last edited by A.O. Razor; 06-23-2011 at 01:25 PM.
06-23-2011, 02:45 PM
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06-23-2011, 06:16 PM
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My 1999 H2x had a 454mag in it and I hit 70gps with it one time by myself light load on a cool evening. Would run 67-68 without a problem. Not sure but I think it had a 25 mirage?, its been a while....502 boat should get to 70 real speed. I though the 496ho boats were around 72? Mine ran real well, fast 21 degree hull but not so good in the 3 footers......
My 253 with a 502 spun a 25 mirage to 5000rpms so im sure that h2x being much lighter is propped wrong, should have a 25 not a 23. By the way I used to see 75 on the speedo.......
My 253 with a 502 spun a 25 mirage to 5000rpms so im sure that h2x being much lighter is propped wrong, should have a 25 not a 23. By the way I used to see 75 on the speedo.......
Last edited by dagah2x; 06-23-2011 at 06:19 PM.
