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Pontoon re power

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sunchaser View Drop Down
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    Posted: 09/12/2012 at 8:50am
Has anyone out there re-powered your pontoon with an I/O conversion?
I am thinking of convertying my older aqua-patio 24 ft to an I/O system due to my old force motor getting "old"
I am looking at a 4 cyl with mercruiser drive. I know this has been done, and is offered in other boats, just looking for "experiences" from other pontooners that may have done this.
Any ideas/ suggestion are welcome, this appears to be much cheaper than buying a new 60-90 hp 4 stroker...WOW
May the sun always rise to meet you, and the wind be always at your back
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NH Tooner Quote  Post ReplyReply Direct Link To This Post Posted: 09/12/2012 at 6:35pm
I would stay with the outboard. There are plenty of used outboards for cheap money. I/O's are heavier and take up alot of interior room. Then you have a bilge to think about. By the time you build whats needed and get the I/O, I bet the outboard is cheaper. Just my opinion.
Good Luck
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CajunDiver Quote  Post ReplyReply Direct Link To This Post Posted: 09/12/2012 at 8:24pm
I agree. I have some experience with inboards. They require beefed up supports and are rough to work on due to usual space confinements. Also moisture in the bilge, etc tends to work on them. Yes the motor itself is probably cheaper but by the time you buy the outdrive and do all the work required to support everything you will most likely spend more. If I were going inboard I would go diesel but on a pontoon thats probably out due to weight. The diesels are less problematic and no worries of fires due to gas fumes.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SunBlocker Quote  Post ReplyReply Direct Link To This Post Posted: 09/13/2012 at 11:27am
I'll just add this:

1) I love I/O's

2)  This is a really big job.  Lots of structural modifications required and a lot of custom fabrication

3)  The I/O will probably take up a lot of space inside of the boat (when compared to an outboard)

4)  It will be quite heavy and your stern might sit quite low
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SunBlocker Quote  Post ReplyReply Direct Link To This Post Posted: 09/13/2012 at 12:15pm
If you really want to go crazy, do something like this:



Just saw this boat on eBay and got a tickle from it.  Guy built a "true" and complete inboard pontoon with a Chrysler 318 and a Velvet Drive tranny.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MRT24 Quote  Post ReplyReply Direct Link To This Post Posted: 09/13/2012 at 2:08pm
That looks interesting can you post a link to the add?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SunBlocker Quote  Post ReplyReply Direct Link To This Post Posted: 09/13/2012 at 2:42pm
Originally posted by MRT24 MRT24 wrote:

That looks interesting can you post a link to the add?

Here ya go!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote CajunDiver Quote  Post ReplyReply Direct Link To This Post Posted: 09/14/2012 at 9:04pm
I hope whoever buys it is mechanically inclined lol. Those velvet drives are fun to unbolt from the engine and shaft coupling. Several different sized bolts some from underneath. Maybe it being a 2011 model they will be good for a while. Inboards are great when everything is kept immaculate but they can be a headache just like some outboards. BOAT= Break Out Another ThousandLOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Speed Qeen Quote  Post ReplyReply Direct Link To This Post Posted: 09/18/2012 at 9:47am
Just starting my pontoon project going inboard aluminum LS engine 475hp in a 24 ft sylvan.  Will post pics when getting farther in project could someone tell me what the railing height is suppose to be because I what to shorten them for more profile look. Cant seem to find the regulations on the height requirement
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 09/18/2012 at 10:39am
I don't believe there is a regulation on rail height. I have seen them from about a foot tall to over two feet. If you look at alot of bowriders, they only have a very short rail (sometimes only 6"'s or so) and it complies..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Speed Qeen Quote  Post ReplyReply Direct Link To This Post Posted: 10/17/2012 at 8:51pm
Here is my buildere is my build
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Speed Qeen Quote  Post ReplyReply Direct Link To This Post Posted: 10/17/2012 at 8:55pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MRT24 Quote  Post ReplyReply Direct Link To This Post Posted: 10/17/2012 at 9:51pm
Looks like a hot lil ls you got yourself there, this is going to be a cool/interesting build. Are you planning on building a motor pod around the engine or doing soothing similar to the tube sun blocker posted above? I'm not very familiar with inboards!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Speed Qeen Quote  Post ReplyReply Direct Link To This Post Posted: 10/17/2012 at 10:53pm
Leaving it in the open for show and tell unless it gets to noisy. I will put a lid on it but planning on selling this one and building a twin ls engine tritoon next year. I like building weird things.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MRT24 Quote  Post ReplyReply Direct Link To This Post Posted: 10/17/2012 at 11:14pm
It's deffentily weird but super cool, it looks like a hot rod already. Is the plan to have the fuel tank above deck?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PS-Guy Quote  Post ReplyReply Direct Link To This Post Posted: 10/18/2012 at 8:31am
Wow...that's all I have LOL
Feel free to contact me for help on your project!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Speed Qeen Quote  Post ReplyReply Direct Link To This Post Posted: 10/18/2012 at 9:15am
Yes I will run fuel tanks on the deck and still trying to decide what I am going to do for railings. I have all the stuff but the railings are old. Would like the newer look but we will see, almost ready for the new carpet next. Then get the engine plumbed and wired then take her out. Can hardly wait.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hicksport Quote  Post ReplyReply Direct Link To This Post Posted: 08/06/2015 at 9:08pm
I am also doing research on doing the I/O swap.  I have a 28 DL party hut.  It would be great to be able to pull a wake board and or a skier with this toon.  I was thinking lifting strakes and 600hp should be a good start.  Keep the pics and posts coming on your projects.
I've spent a lot more on a lot less!!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toonrider Quote  Post ReplyReply Direct Link To This Post Posted: 08/07/2015 at 2:50am
Originally posted by Hicksport Hicksport wrote:

I am also doing research on doing the I/O swap.  I have a 28 DL party hut.  It would be great to be able to pull a wake board and or a skier with this toon.  I was thinking lifting strakes and 600hp should be a good start.  Keep the pics and posts coming on your projects.

Balls man, you ain't talkin cruising, your talkin flying!ShockedWackoSmile
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hicksport Quote  Post ReplyReply Direct Link To This Post Posted: 08/10/2015 at 10:28pm
I've been part of several boat builds that would run 125+ in tunnel hull boats.  I don't want that kind of speed but 55mph or so would be great.  LS motors are so cheap and light weight, a single turbo with an air to water intercooler should be easy to make 6 to 8 hundred hp.  A bravo drive will live at this level.  Bravo drives are not hard to find and not to pricey.  I'm still doing research on the lifting strakes and center toon diameter.
I have grand kids now so the speed boat life has transitioned to the Party Hut pontoon life!!
I've spent a lot more on a lot less!!
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