I picked up a '75 Mandella flatbottom jet at the end of last year. It was last registered in '05. It sat covered, but water got in the boat and unfortunately the motor.

Lee (69Kona) is building the motor and pump for the boat. Hopefully he can chime in on the specifics of the motor build.

So far I've stripped the interior and most of the old rigging from the boat. The plan is:

Bring back the shine of the floors.

Replace the fiberglass tanks with aluminum or stainless.

Repair the interior wood since the material still in excellent shape.

Re-rig the boat as clean as possible.

The motor parts were polished at one point, but after sitting for fourteen years outside they were in sad shape. My focus on this project lately has been painting and polishing all the parts going back on the motor.

Next up is fiberglass work! One fuel tank is out. They laid these tanks up thicker than some boats I've seen!

The pics below are from the day I brought it home.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

The motor is .030 over .
Zero decked the block
Milled the G heads for smaller combustion chambers
I went to a 45* seat angle instead of the stock 30*  on the valve seats and put the big valves and isky valve springs for the comp cam 292
Forged pistons 10:1 compression
Oiling mods
Balanced the rotating assembly
Motor will make some killer torque


Sent from my iPhone using SoCal Jet Boats mobile app

Here's some before and after on the motor parts. Whatever I couldn't polish I painted.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Cool looking boat. How do these ride?

Be careful when tightening those valve covers. I have the same ones and snapped that bolting flange real easy.

Looking forward to see how it turns out.


Sent from my iPhone using SoCal Jet Boats

Thanks for the heads up. I'd be bummed after all the time I spent on them!

I've talked to a couple guys that owned a Mandella flat.  They don't handle like a typical jet, but nothing weird. We shall see!!

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Progress.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Did you do the polishing yourself? If so, great job.


Sent from my iPhone using SoCal Jet Boats mobile app

I did. Thank you!

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

69Kona and I did some jet boat things today...

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Engine is back in it!

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Love it

Sent from my SM-J727T using SoCal Jet Boats mobile app

I saved a few pictures of hat boat to my phone when you first posted it up. I was just looking at it the other day wondering what happened to it. Glad to see it 🤟

Sent from my SM-J727T using SoCal Jet Boats mobile app

So sexy

Sent from my SM-J727T using SoCal Jet Boats mobile app

Thank you!! It's been a longer than expected project and I almost sold it along the way, but it's how these things go.

I'm happy with how it's turning out. I can't wait to get it out on the water for a little winter run.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Making a bracket for the 6AL box.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Details.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app

Details on the tank mounts.

Sent from my Pixel 3 XL using SoCal Jet Boats mobile app