jet boat to outboard?

[hallmark]

hello i was wondering if i could covert a jet drive boat to run an outboard. i have looked everywhere and have found nothing.

 

[archbuilder]

Re: jet boat to outboard?

Interesting question....mine is an outboard boat that was built by a company that mainly made jet boats. There are a few that are similar to mine, but longer. I would question how it would handle after the conversion, jet drive boats are a lot heavier than outboards. I wonder if the back in would get loose without the weight? You might also want to measure how high your transom is in the back. Most are made for a certain shaft lenght motor. I would guess a short shaft would fit nicely on a jet boat.

 

[hallmark]

Re: jet boat to outboard?

the weight would probably be about the same when i have gear, gas, motor and seats. a short shaft would also seem to to the trick.

 

[Bob_VT]

Re: jet boat to outboard?

Well you need a full transom rebuild..... you need to add a splashwell....... a ton of work. WHY?

Do you have an outboard?

Is the jet unit trashed? Is the engine trashed?

 

[Yacht Dr.]

Re: jet boat to outboard?

Hello HM..

erm..what boat do you have ? or is this just a general question ?

Some boats were Cadded for OB..and then later modded for Jet.

We dont know what to work with .. so Info would be helpfull...

YD.

 

[archbuilder]

Re: jet boat to outboard?

Pics would help a bunch....Bob is correct about the splash well and transom...sounds like a seacast project to me. What lenght boat do you have? I think you are under estimating the weight issue, my 115 Mercury weighs in at 300#s a small block chevy is over 500# plus the pump. I'm guessing it was designed for 700 to 1000 # back there. I'm not trying to rule out your idea, just play devils advocate. How about a few pics and what your goals are?

 

[ondarvr]

Re: jet boat to outboard?

Like others have already said, without more info on the exact boat there's not much to say.

I did it on one of my boats, it was an inboard jet and I converted it to an outboard jet. It was aluminum and fairly easy to do.

 

[jonesg]

Re: jet boat to outboard?

theres a place on cape cod that sells old junky boats,
http://boatbrokerageinc.net/

I've seen several whaler jet boats on their website with toasted engines.

They recommend to chainsaw the transom out, seacast it and install a bracket.
No splashwell needed.

You end up with a decent whaler hull and the convenience of an outboard.

 

[ezmobee]

Re: jet boat to outboard?

Are we talking about a JET boat or a jet boat? Like a big old Berkly jet with a big inboard motor or are we talking about a little boat like a Seadoo, Four Winns Fling, Sugar Sand, etc etc.

 

[KingJon]

Re: jet boat to outboard?

I just bought a 76 sleekcraft aristocrat tunnel and was thinking about converting it to a out board because i cant find a motor plus i dont know if the jet drive is good it turns by hand but dont know if its any good which one would be better Jet or ouboard heres a pic i will try and get some more up

 

[KingJon]

Re: jet boat to outboard?

any and all help is appreciated becuz i dont know a whole lot about jet boats this is my first project boat i just dont know if a outboard would fit on the back of it it is a tunnel

 

[ezmobee]

Re: jet boat to outboard?

Please start your own thread KingJon. I'd recommend starting it in the main Boat Topics area.