Twin 300's on a banana?
#1
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Joined: Mar 2012
Posts: 13
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From: CT
I have a 1979 banana with a full transom and a eggbeater on a bracket, planning to repower at the end of this season with a set of used twins.. Is this possible or a big waste of money? Opinons appreciated, thanks guys.
#5
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Joined: Feb 2008
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http://www.youtube.com/watch?v=hgLHFIdForM look at the banana at 1:10 in the video its twin mercs but no bracket
#7
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Joined: May 2007
Posts: 602
Likes: 43
From: Narragansett, RI
I am under the impression that a single would be the way to go. the set back should be 17" and a nice bracket is Portabracket. They are reasonably priced and work well. if you can get in touch with Airdog.. he knows much about running a 300 with a bracket. he told me about it.
http://www.portaproducts.com
http://www.portaproducts.com
#9
Thanks sp123,
Any mastery I appear to have comes from making lots of mistakes. My pursuit of speed has always been secondary to the balance and trim of the boat. Aviation has taught me the importance of weight and balance and honing surface area for the best coefficient of lift.
That being said, my giant V8 single outboard set up knowledge was because I am a student of MrV8outboard.
In the late 90's I spend time talking set up with Pepe from Pantera when I was not getting the results I wanted. He was great resource when I couldn't find any information on the banana, but his boats are 7' wide.
I think you need to answer one more question before you make your decision.
1. Running costs: Twins will cost more on fuel, oil and maintenance.
2. Set up costs: Twin brackets are more if that is what you want.
3. Type of power: Are they twin 200's?
4. How important is speed? If it is all that matters, go twin.
Here are the facts regardless of what you here.
Single - If you have a fully built up v8 muscle engine built to 400hp on a 17" Porta Bracket turning a 26p chopper your gonna go 74mph on a stock bottom of the hull. If you flip the boat over and blueprint it, then you will gain a bit more.
Twin - If you bolt twin stock (2.4 or 2.5) 200hp mercs to the transom you will go 65mph. If you jack it with 5" manual plates and run 26p choppers, then you will go 70mph. If you build the engines then depending on what you do, you could get as high as 90mph, but that is just what I have heard.
Single Bracket: The perfect bracket is the 17' Porta bracket. Keep in mind that if you run a v8 with out any support on the transom, it will take it's toll if you spend most of your time 4 feet above the ovean like I did.
Twin Bracket; The best set up is 5" jack plates on the transom. Twins on a long bracket will f#ck up the balance of the boat. You can solve it by adding some weight to the nose, but now your boat is heavier. If you do go this route, go porta bracket tiwn bracket with the platform as it adds the most transom support.
Hope I helped.
Chris
Any mastery I appear to have comes from making lots of mistakes. My pursuit of speed has always been secondary to the balance and trim of the boat. Aviation has taught me the importance of weight and balance and honing surface area for the best coefficient of lift.
That being said, my giant V8 single outboard set up knowledge was because I am a student of MrV8outboard.
In the late 90's I spend time talking set up with Pepe from Pantera when I was not getting the results I wanted. He was great resource when I couldn't find any information on the banana, but his boats are 7' wide.
I think you need to answer one more question before you make your decision.
1. Running costs: Twins will cost more on fuel, oil and maintenance.
2. Set up costs: Twin brackets are more if that is what you want.
3. Type of power: Are they twin 200's?
4. How important is speed? If it is all that matters, go twin.
Here are the facts regardless of what you here.
Single - If you have a fully built up v8 muscle engine built to 400hp on a 17" Porta Bracket turning a 26p chopper your gonna go 74mph on a stock bottom of the hull. If you flip the boat over and blueprint it, then you will gain a bit more.
Twin - If you bolt twin stock (2.4 or 2.5) 200hp mercs to the transom you will go 65mph. If you jack it with 5" manual plates and run 26p choppers, then you will go 70mph. If you build the engines then depending on what you do, you could get as high as 90mph, but that is just what I have heard.
Single Bracket: The perfect bracket is the 17' Porta bracket. Keep in mind that if you run a v8 with out any support on the transom, it will take it's toll if you spend most of your time 4 feet above the ovean like I did.
Twin Bracket; The best set up is 5" jack plates on the transom. Twins on a long bracket will f#ck up the balance of the boat. You can solve it by adding some weight to the nose, but now your boat is heavier. If you do go this route, go porta bracket tiwn bracket with the platform as it adds the most transom support.
Hope I helped.
Chris
#10
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Joined: Jul 2010
Posts: 526
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From: Long Island, NY
Hey chris.. Seems like you know about setting up these type of boats...I'm an old inboard banana owner..now I came across a 28 k&k ghost(outboards) no motors had 200 yammies...It was set up with the small gils(18" set back).. Found a pair of old 2.5 Mercs but they are 175's ...any thoughts..boats a beater and really want to keep cost down..but afraid they will be to small??



