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11-16-2009, 10:54 PM #16Junior Member
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11-16-2009, 11:36 PM #175000 RPM
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- Apr 2007
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the new v-max
well.....the new v-max is going to change the whole 2/4 stroke equation.
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11-17-2009, 09:07 AM #18Junior Member
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- Oct 2009
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- Merritt Island, FL
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4-5 Knot increase with mods
4-5 Knot increase with the previous 3-blade Mirage props. Don't have a basis of comparison for the new Powertech OFX4 4-blade props as these were only installed after the engine mods. Installed the OFX4s for better stern lift and higher rpms, not speed. Sized props for max rpms for the most hp gain. Even with the bigger Mirage props did notice better time to plane and throttle response in addition to the max speed increase. Spending the $750/engine for the mods was better than having to buy and install a new larger engines.
Hopefully this will get me by until a couple of of the new technologies come out in a year or two promising more power and better economy. Wonder if the engines will qualify for a $1500 incentive tax credit for Green Technologies?
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11-17-2009, 04:18 PM #19Junior Member
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mods
skytour what type of boat do you have and when you said 4-5 knots do you mean mph, what kind of speed gain sould i see with the mods on the 27 fountain with 300xs 07 spinning 25 lab mirage props at 5850 75 mph with 1/2 tank and 3 people , on low fuel and just me i hope to see more
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11-17-2009, 06:07 PM #20Junior Member
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Comparison
The increase is in KNOTS. Comparing the two boats is like comparing apples to oranges. I have a heavy Boston Whaler 305 Conquest that is substantially slower than your boat. Don't know what the end result would be with regard to speed but I think you would appreciate the improvement in hole shot and throttle response with your boat. Write something up on Scream & Fly if you make the mod.
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08-24-2011, 01:51 AM #21New Member
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- UK
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Hi i would like to contact simonmotorsport by (e-mail) about 300XS mods does anyone have their e-mail as it is not on the website that i can see.
Thanks Corby.
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08-24-2011, 04:58 AM #22Junior Member
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Simon Motorsports Contact
Simon Motorsports
444 Feghali Road
Ramona, CA 92065 619-843-6795
email: info@simonmotorsports.com website: http://www.simonmotorsports.com
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03-19-2012, 03:17 PM #23Junior Member
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yes there is mods for the 300xs and the gain is usually 3-5 mph