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Thread: 40hp modded Yamaha
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05-15-2011, 07:01 PM #1
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40hp modded Yamaha
Plan to test next weekend, if water levels allow me. Hoping to hit mid to upper 80's after some break-in and tuning.
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05-16-2011, 03:44 AM #2
Screaming And Flying!
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Good luck, let us know how she runs!
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93 STV Mod VP/MERC 2.5 200
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The Bible is life's instruction manual.
Proverbs 4:18-20
" For a nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people."
-- John F. Kennedy 1962
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05-26-2011, 08:27 AM #3
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Testing
Motor ran great when testing. Cooling was very good and all parts stayed together. After break-in, I made a couple WOT passes and got respectable speed on the gps. We ran out of time to begin tuning. I plan to start tuning with timing, carb jetting and prop setup...was a good day of testing.
I'll try to get some video the next time out.
Joe
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05-26-2011, 10:07 AM #4
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Is that a Kamato Lower? Nice Rig DMH?
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05-26-2011, 04:15 PM #5
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The gearcase and tower are from Bass Machine. Although, less cc's than a DMH, it has to compete in the 850cc class(SEH).
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05-26-2011, 04:25 PM #6
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very cool what kind of hp/rpm? Rick
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05-26-2011, 05:23 PM #7
Screaming And Flying!
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That would seem optimistic considering speeds obtainable with a 44 XS which is both larger in displacement and horsepower if i'm not mistaken . Been a while since I had mine on a DSH Furnal Flyer (1993 ) Nice setup though .
Originally Posted by proprider
Plan to test next weekend, if water levels allow me. Hoping to hit mid to upper 80's after some break-in and tuning.
" The Fleet of Old Boats "
'73 -14' Orlando Clipper Skiff -Yamaha 25
93- 18 ' Renegade Nomad Flats boat -Merc 150
'94 - 21 ' Allison XB - 2003 -Merc 260
'97 - 19 ' STV Euro - Merc - 260
'99 Benninton 2375 TOONER - V-6- 2 liter 150 Mariner
2001 Grady White 263 - Twin Yamaha 250 OX 66
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05-26-2011, 08:03 PM #8
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Hey Tom,
My optimism is based off of the differences in technology from the Mercury 44xs deflector motor vs the Yamaha loop charge motor. I get 81mph with my Mercury 44xs and the looper is a much lighter package as well. I have just begun testing and have already exceeded the 44xs speed.There must be a reason why APBA won't allow it to compete in the DMH class?? I'm doing my best to find out why and having a lot of fun doing it.
Why don't you break that Flyer back out and run with us old farts!!
Joe
Originally Posted by Tom Foley
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05-27-2011, 04:21 AM #9
Screaming And Flying!
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Ha HA ..she's long gone ..great boat though . Thats killer that you have gotten that far with the Yam , look forward to some video when you get it dialed in . The kneel down days are gone for me I'm afraid !
'73 -14' Orlando Clipper Skiff -Yamaha 25
93- 18 ' Renegade Nomad Flats boat -Merc 150
'94 - 21 ' Allison XB - 2003 -Merc 260
'97 - 19 ' STV Euro - Merc - 260
'99 Benninton 2375 TOONER - V-6- 2 liter 150 Mariner
2001 Grady White 263 - Twin Yamaha 250 OX 66
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05-27-2011, 08:29 AM #10
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Short course Nationals at Rock Away Beach Mo. June 3,4,5, are you going to be there? Dan Crummett runs a Furnal Flyer with Tohautsu, and Bass Lower, I'll Run CSH. Water has really been up probably crap in the water!
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02-28-2022, 09:54 PM #11
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Hello. I have seen your boat on the internet. I was wondering if you still own it ? Is the boat in your ID picture a Furnal Flyer ? I would like to buy it. Do you still have the Merc 44XS? I would like to buy the whole rig ?
Drop me a line , please .
Thanks Mitch
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07-07-2022, 05:39 AM #12
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Mitch, I still have the boat and still race with it. The 44xs is long gone, to a collector. The class has died in my region and I only race in the Modified category now. I built the hull myself and it's still very competitive.I'm not looking to sell at this time. Sorry for the delayed response. https://youtu.be/QKhJC-uKY40
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07-09-2022, 06:37 AM #13
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More modifications have developed on this motor since this thread was made. It's been a very fun project! https://youtube.com/shorts/8qtSRunjS9Q?feature=share
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07-09-2022, 06:44 AM #14
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Progress in action https://youtu.be/_I5gcIFVH4g
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07-09-2022, 07:16 AM #15
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well done!!
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