OMC Evinrude Johnson 115Hp Rebuild or Repower ? Jet Boat Fourwinns Fling

[Jon NL]

Hi Group !

First post new to boating other then a few sea doos long time ago and small pond boats i live in Newfoundland Canada. I was given a mid 90's Fourwinns Fling that I am trying to breath new life into over the winter, so i guess this is my winter project. (i didn't say how many winters lol) We have a cabin in central Newfoundland that is close to a big Lake so this jet boat could provide my family some fun during the summer.

I have shared the start of this wrenching adventure in a few different places on various forums and it was recommended that i share it here

So here it goes

[Jon NL]

Sooooo So the Po bought this boat and took it out and it started to fill up with water, took it in and put it on the trailer. It was left for multiple years not winterized. I found it on the side of a friends cabin with water in the motor compartment. I took the drain plug out and two years later it was given to me for free. Pulled the plugs and rolled the motor over by hand and it spit out water. I put oil in it and tried to boost it and found the starting motor full of water. Removed the flywheel tonight, put the new bearings in the hubs and reassembled but found some bad issues that might be game ending. When water was draining out of the boat it was coming out around the jet pump I thought it needed to be resealed, looked under and no intake grate hummm weird and there has been damage to the bottom of this boat that has been repaired

[Jon NL]

I am going to take the motor out and take it apart and inspect it for damage. Inspect the hull and the jet pump. I am willing to spend a bit of money on this project but I don’t want to throw good money after bad.I will get to the bottom of this !!! If this does not want to be a boat anymore then at least it will be a floating platform with a v4 motor for a anchor

[Jon NL]

[Jon NL]

[Jon NL]

Ugh !!! ..............
I NEED A SHOP MANUAL !!!!!

[Capt.Insane-o]

Yep. thats a project.

[Jon NL]

https://forums.iboats.com/threads/ev...5#post-5727302

[Capt.Insane-o]

The block can be bored easy enough. All the internals can go in the round bin. The adapter plates to the pump cracked in the water jacket area from not winterizing them. You need to take a good look at that.

[David]

Welcome to the site. You are probably the first person from Newfoundland

[Jon NL]

Thanks @David

some updates

[Jon NL]

[Jon NL]

[Capt.Insane-o]

There ya go, now fill the holes and put a bracket on the back

[Turtleherder]

There ya go, now fill the holes and put a bracket on the back

Cap’s right. Glass in a transom, glass over the hole in the bottom, put a jack plate on it and you are good to go. Way less money, less work, easier to work on, no winterizing the pump, faster in the end and you get lots of storage where that old power head was.