Intheslot12 Posted February 25, 2016 Report Share Posted February 25, 2016 OK so I was finally able to break in the new motor. I decided to go with the Merc Spitfire X7 21 pitch (4 blade). The boat simply jumps out of the water. Easily on plane with 2 boat lengths. Many people told me I would only pick up 6-7 MPH moving up from an F90. Here are the numbers: I was running a full tank of gas and 2 people with very little equipment. I also replaced the gauges with command links. 3500 RPM 29.2 MPH 3.9 GPH 4000 RPM 33.3 MPH 5.8 GPH 4500 RPM 37.6 MPH 7.6 GPH 5000 RPM 43.2 MPH 9.1 GPH 5500 RPM 48.4 MPH 11.1 GPH The motor had more to give but I was reluctant to push her. I was in the final stages of the breakin. When I get the top speed numbers I will post. As usual I received so much advice from people on this forum and I couldn't be happier. This forum is full of good people always willing to help. Thanks so much. Link to comment Share on other sites More sharing options...
nicecast Posted February 25, 2016 Report Share Posted February 25, 2016 Impressive numbers. Thanks for sharing. Link to comment Share on other sites More sharing options...
jason p Posted February 25, 2016 Report Share Posted February 25, 2016 Nice, already quicker than mine with a 2010 F115TLR and 4 blade. Link to comment Share on other sites More sharing options...
conocean Posted February 25, 2016 Report Share Posted February 25, 2016 Thanks for posting this info! All numbers sound right.... My boat's max speed was 41.2mph @ 5600rpm with 2 people, full tank and little to no equipment aboard with a new 19p Yammi Pro prop. Enjoy that new motor :thumbup: Link to comment Share on other sites More sharing options...
Wanaflatsfish Posted February 25, 2016 Report Share Posted February 25, 2016 good info and nice post... With my little skinny mini..looks like I'll arrive about 1/2 hr behind you to my secret spots if you are running WOT LOL dc Link to comment Share on other sites More sharing options...
lurem Posted February 25, 2016 Report Share Posted February 25, 2016 good read! thanks for posting up some real world numbers! I have read another thread about someone on this forum using the new mercury spitfire prop with good results. Looks like I need to add another prop to my stable! Link to comment Share on other sites More sharing options...
linesider 159 Posted February 25, 2016 Report Share Posted February 25, 2016 I'd run the motor hard for the first 20 hours to make sure the rings seat. Check the oil level every trip until you hit the 20 hour change. Try not to idle a lot. Once I got past the 2 hour break in my first 20 hours was all above 4500 mostly. I don't know if the little sho has as much potential to make oil. Great performance! Link to comment Share on other sites More sharing options...
Intheslot12 Posted February 27, 2016 Author Report Share Posted February 27, 2016 Dino no need to arrive late.... You always have an invitation on her. After all most of my upgrades were your request. lol Linesider thanks for that advice. I'm definitely gonna follow it. Are you coming to West Coast Mav tourney? Link to comment Share on other sites More sharing options...
Wanaflatsfish Posted February 28, 2016 Report Share Posted February 28, 2016 Dino no need to arrive late.... You always have an invitation on her. After all most of my upgrades were your request. lolLinesider thanks for that advice. I'm definitely gonna follow it. Are you coming to West Coast Mav tourney? Mike... I'll leave 1/2 hour early, get into the bights on a shallow tide at the incoming, catch all the reds in my secret spots and wait for you.... don't worry, I'll leave a few for you We can always put a tow rope on the Skinny mini and with all your power...you can tow her at 30 mph.... :) dc Link to comment Share on other sites More sharing options...
Flireman Posted February 28, 2016 Report Share Posted February 28, 2016 Wow so my old school '99 MA17 130 Yamaha 2 stroke doesn't do too bad for an old gal. Runs pretty much 42-44 mph and best speed was 47 mph, all on GPS and very full loads. Link to comment Share on other sites More sharing options...
dabear Posted May 2, 2017 Report Share Posted May 2, 2017 Intheslot12 , I see in your post that you said the motor still had more and that you would post your top end speeds when you get them. Did you get your max RPM up to the 6300 after testing or are you still at 5500 RPM ? I am very interested in this set up. I am 90% sure I am going to put a 115 SHO on my HPX . Thanks for any performance updates. Joe R Link to comment Share on other sites More sharing options...
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