2 stroke comeback.

[Kakapo76]

Gonna be a screamer- might need some muffling to be useable- I get in trouble with neighbors when I flush my 250 merc 

[Jeff B]

I'll put a pair of my little 2" transom dumpy mufflers on it.  Will still need to adjust the amount of water injected into chamber to find the "sweet spot" power wise.
It's a 90 deg v6 so has a unique sound. I like it.
Way better than the old 3.8 commy or the VQ35

[Jimmy Jet]

How many hp was the base motor and what size hull you thinking of putting it in? Should go real well.

[Jeff B]

How many hp was the base motor and what size hull you thinking of putting it in? Should go real well.

Base engine is rated 225hp @6000rpm.
I'll put it in a special new
JJ3.0 hull specially designed for 2 stroke, 2 stage propulsion.
Should be under 350kg and tough as (and grunty) 

[Kakapo76]

Love how you keep innovating Jeff- bloody brilliant. I can't see any issue with this build except the fuel bill potentially it might be horrible

Does anyone know the actual percentage of time spent at WOT in a jet boat?- all of the outboards publish a fuel burn at WOT (its often a scary number) Be curious to see if two strokes actually cost more to run in the bigger engine size- they have better throttle response, are lighter- have lots of power on tap early on?

I am curious... 350kg with 220-ish hp its going to go quite well methinks :-)

[steelo]

https://youtu.be/zkRhbpJitEI

She is a runner.
Now to build a hull to match...

What about that boat shaped bin under the table?

[Ross Goldsack - JBNZ Immediate Past President]

specially designed for 2 stroke 

What does that involve? Smoke resistant alloy

[Jeff B]

I'm expecting the fuel consumption to be absolutely terrible....
Not sure on fuel burn but in past experience a 2 stroke uses about 30% more fuel no matter how you drive it.
In reality it comes down to weight you are pushing and how fast you are pushing it?
I'm expecting a good ratio of "fun per litre of fuel" on this one.

[Jeff B]

What does that involve? Smoke resistant alloy

Special design which optimizes the power characteristics of the engine/pump combo. 

[Paul]

I'm expecting the fuel consumption to be absolutely terrible....

The cost of 2-smoke oil will be the real killer..

[Jeff B]

Speaking of fuel and oil running costs that will surely send me broke I made fuel tank. Hold enough that my ears will be ringing and I'll be sick of it before I run low on fuel.

[Jeff B]

Bench seat was going to be a bit dodgy at 60mph so put buckets on heavy duty adjustable rails so can move driver seat 200mm closer to centre when solo.
And can move seats to suit driver/passenger weight.

[Clint640]

Nice work! Ya need a disengage setting on the seat sliders & a good solid Jesus bar then the passenger can shift their weight on the go for better cornering like a racing sidecar swinger 

Cheers
Clint

[lq4151]

I have offten wondered what an engine like that would go like laided down and  coupled  To a jet . Well done Jeff
Your projects are a  inspiration to all keep it up. I'll keep a keen eye on this project 

[Jeff B]

Not much happening lately, engine and pump all set up, ready to go.
It is a very compact setup.
I'll get back into it soon