Outboard to I/O conversion

Mercury140-I6

Petty Officer 1st Class
Joined
Nov 6, 2003
Messages
339
Hey guys, I have heard of people going from a I/O to an outboard, but what about the other way??? What would have to be done? I have a 96 Glastron GS160. I think a 3.0L would be plenty of power for this little boat.<br /><br />
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<br /><br />Any thoughts on the subject would be greatly appreciated.<br /><br />Craig
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Outboard to I/O conversion

Anything is possible (usually) provided one has enough money. That said, I would look for a different boat. This undertaking is more than cutting a hole in the transom and plopping an I/O in its place. The first check to make would be with your insurance agent for obvious reasons. Here are just a few possible pitfalls. 1) Weight (can the boat handle it). 2) Whats the maximim rated HP for the boat. 3) Loss of interior space 4)Structural integrity 5) Was that particular hull ever made available with an I/O. 6)Engine compartment must have blowers installed for venting. 7) New wiring required.<br />8) Engine house would need to be fabricated.
 

QC

Supreme Mariner
Joined
Mar 22, 2005
Messages
22,783
Re: Outboard to I/O conversion

Just curious, but why? Do you have a complete 3.0 laying around?
 

craze1cars

Lieutenant Commander
Joined
Dec 26, 2004
Messages
1,822
Re: Outboard to I/O conversion

This would be a huge, expensive undertaking that would seem to be completely senseless to over 99% of the boating population. The only practical answer is to sell what you've got and buy what you want.<br /><br />Then again, try telling that to someone who spends $40,000 and 4,000 hours building a one-off custom Hot Rod that could only sell for maybe $10,000 when it's done. People do such things all the time just for the challenge and for the sake of building something unique with your own two hands. Such projects are as far from practical and economcial by any stretch of the imagination, but to many they're just fun to do. <br /><br />If you think such an undertaking would be fun, you have deep pockets, gobs of time, a huge amount of talent, and an engineering background, then start cutting! When you're done, you'll probably have an unsellable, worthless, and totally unique boat that is exactly what you want to own. But if all you really want is to own a small runabout that has an I/O, buy one that's already made.<br /><br />Or keep the boat you've got and just buy a new outboard that's rated max HP for your boat. Expensive they are, but it'll be cheaper in the long run, and done in a day instead of years.
 

umblecumbuz

Lieutenant Junior Grade
Joined
Sep 25, 2004
Messages
1,062
Re: Outboard to I/O conversion

Nice boat.<br /><br />Why do you climb Everest? - Because it's there. If your heart's set on it, go for it, but be warned, as the guys above have said.<br /><br />Shame really!
 

danie

Petty Officer 2nd Class
Joined
Apr 11, 2005
Messages
154
Re: Outboard to I/O conversion

You guys have the best looking boats and the oldest outboard motors Ive ever seen.<br />The above is good advice. Dont mess up a perfectly healthy body. If you want to spend and still keep the Glastron you can for much less bolt a new(ish) big six on the back and the combination will make you as happy as a pig in Palestine.
 

phatmanmike

Captain
Joined
Oct 24, 2003
Messages
3,869
Re: Outboard to I/O conversion

why would u even dare think it.<br /><br />if you picth the 140 inline 6 1.6L and get a stupid, gutless, 3.0L 130hp, im kicking you off my buddy list
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Outboard to I/O conversion

Theres lots better, cheaper ways to slow the boat down....<br /><br />Or are you just trying to find ways to take less people?
 

rwidman

Lieutenant
Joined
May 27, 2004
Messages
1,396
Re: Outboard to I/O conversion

Why would you want to do this?
 

CATransplant

Admiral
Joined
Feb 26, 2005
Messages
6,319
Re: Outboard to I/O conversion

Sheesh! Don't do that. You have a nice boat and motor combo there. Why change. For the cost of doing what you suggest, you can buy a boat with a 3.0 outdrive already installed.<br /><br />If you sell the one you have, you might even break even. Feh!
 

JasonB

Lieutenant
Joined
Feb 10, 2003
Messages
1,455
Re: Outboard to I/O conversion

Not the Glastron man. Egad! Bolt on a new 4 stroke or ETec outboard if you must, but I wouldn't touch that hull with an I/O. The balance will be all wrong and she will be very stern heavy.
 

sergioy

Petty Officer 1st Class
Joined
Apr 14, 2003
Messages
376
Re: Outboard to I/O conversion

When my son doesn't take his "medication", he makes some really weird suggestions.<br />I guess I am like most people here on this board, I enjoy my time on the water with my boat, not the time spent in the garage with my boat.
 

Twidget

Commander
Joined
Jun 16, 2004
Messages
2,192
Re: Outboard to I/O conversion

Is it April 1st again already? <br /><br />That is a beautiful rig, why mess with it?
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Outboard to I/O conversion

Theres a reason you hear of folks throwing away I/O's and going to outboards but not the other way......
 

Mercury140-I6

Petty Officer 1st Class
Joined
Nov 6, 2003
Messages
339
Re: Outboard to I/O conversion

It was just a thought, I really don't like mixing the oil at the pump. Makes me feel like a chemist and I feel quilty taking longer to fill the tank than others.<br /><br />Craig
 

umblecumbuz

Lieutenant Junior Grade
Joined
Sep 25, 2004
Messages
1,062
Re: Outboard to I/O conversion

That's amazing!<br /><br />I don't like the time and labour of mixing the oil, so's I'm gonna rip out my outboard, tear my stern apart, build a new engine housing, make big holes where there weren't any, and fit an inboard outdrive unit.<br /><br />That'll mean I'll need gas more often so I'll be going to the pumps more, and it'll take me longer to get there because the boat's slower. And I'll need to buy sump oil and mess about changing it, legally disposing of the used oil and filter, and paying higher service bills.<br /><br />On the plus side, it'll take me two years to do the job, so as gas prices will have doubled by then I'll have saved a fortune and my hull will still look new (at the bows, anyway!)<br /><br />Why not sink the whole thing, claim insurance and buy one ready made?<br /><br />I love human nature! Go for it Craig!
 

mattttt25

Commander
Joined
Sep 29, 2002
Messages
2,661
Re: Outboard to I/O conversion

4 stroke outboard?<br /><br />i think your biggest hurdles would be weight and balance. unless you have a naval architect for a friend, those issues are unknowns you probably don't want to mess with.
 

cpj

Ensign
Joined
Jun 14, 2005
Messages
958
Re: Outboard to I/O conversion

Why dont you add the oil to the tank while you are sitting in your driveway.No law saying you have to add it at the pump.Although,think of the wealth of information that you would be for anyone else that wanted to do this!I say,fire up the chainsaw and let her rip! :D Like they say in the hotrod world,"any body can restore a classic,it takes a real man to cut one up!"
 

craze1cars

Lieutenant Commander
Joined
Dec 26, 2004
Messages
1,822
Re: Outboard to I/O conversion

If all you care about is mixing gas, take the giant technological leap into the early 80's or newer and buy a used oil injected outboard. Even better, a brand new 4 stroke outboard.
 
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