Evinrude 115Hp V4 Project Rebuild / Repowering a Fourwinns Fling Turbo jet boat

[racerone]

And if that balsa core material has somehow gotten water in it , then it might be compromised in strength.

 

[Scott Danforth]

Nearly all of the 90s jet boat hulls are balsa cored. This gave them strength and light weight vs a solid hull

Some boats today still use balsa core on decks

The area you have circled on your pic looks like part of the core is exposed

 

[Jon NL]

 

[Jon NL]

 

[Jon NL]

So there is wood around where the jet pump sits and the front one is damaged form the boat striking something. A good cleaning and inspection of the whole hull with a detailed inspection and some sort of repair is needed in this area.

 

[Jon NL]

Cabin had 45cm in one storm, got the sleds our for a spin but had to shovel out the boat, elevate the front and cover it for the winter.

I did have a closer look and there is balsa wood and it is rotten where the jet pump mounts. Looks like replacing it is just part of the adventure


Thanks for all the help and advice so far in this adventure I do appreciate it

Jon

 

[Jon NL]

FYI part #16 clamp is still available through the dealer at a cost of 5 maple leafs (I ordered two)
Online turbojet specially site quoted me $70 US for part #16

 

[Jon NL]

So this is how we are lifting motors now

 

[Jon NL]

Ok friends its time to lift the motor, just wondering what the proper way to attach rigging to this motor ?

attaching a hydronic balance puller and lifting from a dead horizontal to vertical does not seam right ????

 

[Jon NL]

5/16 x 24 Tpi bolts
For flywheel

 

[Jon NL]

 

[Jon NL]

This has a telltale that comes off the exhaust plate between the cylinders

Should I add one to the water jackets ?

In my research I found the link below with detailed information

Johnson/evinrude adding a tell tale Verified

Adding a water pressure indicator to an OMC outboard. Tell-tale, tale-tell, that little squirty thing -- later model OMCs have 'em and you want one on yours. The water pump is a crucial element in preserving the health of your outboard. It's vitally important to know that it's functioning...

forums.iboats.com

 

[racerone]

Does your jet unit have a rubber impeller water pump ?

 

[Jon NL]

 

[Jon NL]

This Is one of my other boats .... I got if from a friend it was his grandfathers. I think it came from sears and the motor is a 3 hp sea horse that I am going to learn how to tune

 

[Jon NL]

Does your jet unit have a rubber impeller water pump ?

As far as I can tell it does not. the water from the motor is supplied from the main drive impeller

I am concerned about air locking and running one bank of cylinders hot

 

[Jon NL]

@wearzy still active ?

 

[Faztbullet]

That why strainer/s need removed

 

[Jon NL]

 

[racerone]

Where did you read / learn about ---" airlocking " ---on this turbojet ?