New Jet Ski Engines

[marko66]

Hi All

Has everyone seen the new jet ski's and the engines that are in them and is anyone playing with them?:eek:

I don't have the money to play but a new 1200 cc dry sump fuel injected four stoke sort of makes me think will it work in a gyro. I havent seen one in the flesh so maybe its not possible then again maybe it is :cool:

I know there is a good reason for not using the two strokes out the jet ski's - can someone tell me what it is please :D

Regards Mark

[Mitch]

Marko,

Go to the yank forum and do a search on the Yamaha Gemini 4stroke jet ski install....100hp and it looks like a good install. There is some discussion about just how good this and it's close cousins are, all to do with the torque being delivered similarly to the 912's.

Mitch

[mceagle]

G'day Mark
The eminent pollution laws will eventually ban all 2-strokes from the waterways, and possibly from everywhere else as well unless they can come up "greener" 2 strokes. They have improved but still have a long way to go to match a modern 4 stroke.
The benefits to us will be many more light-weight, powerful and efficient 4 strokes to choose from. There are many already available from the outboard market which was previously dominated by 2 strokes.

[marko66]

Hi All

Mitch the snowmobile thread in the yankee forum sort of inspired me to ask and as we don't seem to have heaps of them I thought laterally and went why not jet ski waverunner as we seem to have a few of them here.:o


I guess no one likes the idea of a 800cc watercooled two stroke rotax or bigger and around 100 hp or japanese 2 stoke of the same size and hp.:chainsaw::Bat1:

Tim I hope they start drifting onto the market soon - I know you don't mind using different engines like suzuki have you been playing with anything different lately that you care to tell us about :D

Regards Mark

[Echo 2]

Mark ,
I looked at Sea Doo a while back , they run a 4-stroke Rotax that has variants from 120 hp up over 200 with super charger. Neil Hintz makes a redrive to suit some jet ski engines .
Sea Doo would'nt sell me just a motor ... I didnt tell them what I had planned for it ..... I said I wanted a spare for racing skis ... they said the motors are so good you dont need a spare ...:anger: ... next option was to buy a used ski & rip the motor out .... only trouble is if I had a good jet ski I would be too busy on the water to pull the engine out.

Echo

[marko66]

Hi All

Echo you've been a long time and fairly quite mate :D I have changed computers so I dont have your email address anymore.

That new Kawasaki jet ski with the one and a half litre engine supercharged and 250 hp would seem like a decent four stroke engine to someone who wanted light weight and a few horses.

Mate I know your going to post a few photo's of the new build can you email me the full size ones as they come along please mate :cool:

I just got my masts and 76 inch hub from Rosco so when i get some ply wood to protect it i'll have to get the forklift and bring the welding bench home and set it up on that.

I got a sneaking suspicion that my first gyro build isnt going to look quite as good as yours :eek:

Regards Mark

[Echo 2]

echo@bordernet.com.au

Echo

[vicgrin]

Some pritty nice engines on this site


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