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Fountain 29 2011 700sci
i own the last fountain made from fountain factory in 2011 since 4 years right now it came originaly with 600sci and ITS BOX xr drive with shorty ssm lower maximum 5 blade 28 pitch.. i chamge programationbox computer and wheel upgrade stade 700sci.. run 83-5 i want to find way to reach 90 ! X ratio too high? Swap xr lower? Switch to 4 blade biggest pitch ?? Help me please!! |
I would think you could be running faster than that. I have a 05 29 575 and run 81-82. Running stock XR with 30p Bravo 1... the Maximus 28 on the boat runs about 77-78. I think the 5 blade is better everywhere except top end. So if you want too end- I’d say put a 30-32p Bravo 1 on it. |
Originally Posted by precisiondetails
(Post 4614704)
I would think you could be running faster than that. I have a 05 29 575 and run 81-82. Running stock XR with 30p Bravo 1... the Maximus 28 on the boat runs about 77-78. I think the 5 blade is better everywhere except top end. So if you want too end- I’d say put a 30-32p Bravo 1 on it. |
Be careful getting that one on plane with lots of power. 29 Fountains are pretty tough on drives. Baby it and use lots of tab to get on plane.
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what gear ratio in drive? i am thinking 1:36 gear and 28 or 30 B1 maybe?
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Well mine is a 1:50 |
Fountain 29 2011 600sci upgrade 700 programation looking for new max5 prop
I wont advice for appropriate prop on my 29 fever run 78 presently with maximus 5 blade and ssm bottom with ITS box extention . I know x dimention is high but dont know if its 19 or less ... expect to reach 85 with mupgrade 600sci computor bx and wheel chamge 2 years ago. Love the boat but enable to set prps drive for good launching and top end . Lot of choice about pitch size of the news max 5 short tube 15" (inboard recommandation size) about 28 to 34 . Anywone can help me about appropriate sise of props or spacer |
I'd call BBlades
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See how fast does a single 525 29' Fountain runs if in the 80's copy set up? A Bigger prop with your power that may be the trick for top speed you want ??
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What exact did you change for 700 update?only ecu programm and smaller pulley??
To make it a real 700sci it needs also a cam change when use oeginal merc 700 ecu! Michael |
What kind of load do you have in the boat? If you have a full gas tank and 4-5 passengers, speeds in the low 80’s are about all you can do with 700 HP. If you are alone with low fuel, you should run mid to upper 80’s. It takes a lot of HP to push a big boat 90 MPH. One more thing you need to do is check that your boat’s bottom is still sharp and true. A boat can gain 5 or more MPH if your bottom is a mess. Good luck on finding your missing speed. |
I see you are from Quebec, I believe we may have met one day near Brockville, your boat have black hull sides?
Back to your question here, see if you can reach out to KellyO on here. Kelly had a pair of 600's in the Holy Cow, 35 Fountain, that he did a number of upgrades to. I believe he worked thru all the Whipple upgrades for the Merc 600's and now has the 700's in his MTI and is working some changes on them as well. Kelly is a great guy and might be able to give you some pointers. He made the Fountain run well enough to take his class at the Shootout, and the MTI is pretty stout as well. |
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