Ilmor in a 29 Fountain Fever
#13
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Join Date: Apr 2011
Location: Vero Beach, FL
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Right now I'm running a 5 bladed 25p Herring and a 5 bladed Hyrdromotive. I'm still trying to get it dialed in. I sent the Herring back to Herring to have it rework. It was slow to plane and I could only get 5600 - 5700rpm out of it with a max speed of 77mph. They're going to trim the diameter down from 15.5 to 15.25 and release a little cup. I ran the Hydromotive for the first time the other day the hole shot was good but 77mph at 6000rpm. I was only able to top it out once for a short time so I can't say for sure that I wasn't over trimming it. I need to run it a few more times to know for sure.
Last edited by Spinletto; 02-10-2013 at 07:23 PM.
#16
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If I'm at altitude or in high heat ill drop down to a 4 blade 26.
Im running the Imco -2 shorty lower.
My 2750 is about the size of your boat and I run 85 all the time (MEad /havasu etc) best of 90 once on a freezing cold morning (literally 40 degrees) at elsinore running a 30 maximus which I cant normally pull under other conditions
I think you have a bit more speed in this but not a lot.
Using the rule of 20/1 with 75 ponies more Im going 8MPH faster (in a similar but not identical sized boat) If I theoretically remove 75 HP from my ride the rule says I should be going 3.75MPH slower.
In other words I think with optimum setup you can get about 80-81 out of your rig, but the time and effort to get there may not be worth it for you.
Of course Im basing what I think based on what works for me in a similar sized but not identical rig.
Your boat is a just bit bigger an heavier with a full load of fuel than mine (think you carry 150?) so maybe 79-80.
Pretty impressive for a single engine 30ft boat.
I run the ocean a lot and have directly correlated the life of my drive to ocean vs lake use- a 5 blade in the ocean would likely be a real short proposition before rebuild.
Uncle Dave
#17
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This boat is for sale in Texas.....................called on it - they told me it came that way from the factory............I chuckled..........what is the story on this boat? Told me it does 92 also............why was the interior redone as well? Any info would be great.
#19
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This boat is for sale in Texas.....................called on it - they told me it came that way from the factory............I chuckled..........what is the story on this boat? Told me it does 92 also............why was the interior redone as well? Any info would be great.