Am I propped wrong??
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Am I propped wrong??
Here is my set up, 88 Baja 240 sport, 454 mag, bravo one out drive, 4 blade 23 pitch. I'm not sure of the gears in the drive but I know everything is stock. I am only able to get to about 4100 rpm at wot, which only gets me to about 54 mph, I know the boat is capable of more, especially since I have the mag motor, I am able to rev to 4600 rpm in neutral. Should I be looking for something else or do I just have the wrong prop??
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Yes, you are over-propped. Years ago I had a Baja 240 with a 502Mag. The 23P 3-blade Mirage was the best for that set-up. With the 454Mag you may be more in the range of a 21P. That engine should WOT closer to 4800, however, it's best NOT to do it in neutral.
Last edited by Holy Smokes; 09-01-2010 at 05:08 PM.
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Im guessing a 21P Mirage Plus too. Your operating range is 4600 to 5000 RPM with a mag motor. You will probably gain about 600 RPM with the 21P which should put you around 4700 and in your powerband.
--Right now your damaging your engine by running it at such a low RPM vs what it was designed to perform at. I would change props as soon as possible.
--Right now your damaging your engine by running it at such a low RPM vs what it was designed to perform at. I would change props as soon as possible.
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I just sold this same boat this year (1997) with the 454 non-mag and found the 3 blade 23P Mirage plus put me right where I needed to be. Was going to send it out to be labbed but sold it to buy another boat.
So the mag motor should push a 3 blade 23P just fine.
So the mag motor should push a 3 blade 23P just fine.