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I pulled it out of my a$$. How would you design an engine that you knew would be operated by idiots?

They were trying to get minimum octane requirement down enough to survive two year old 87 marina gas.

What difference in strength is there between prepreg and wet layup?

The problem with the X2 crowd is that very few want to spend much time/money on them beyond changing looks.

Make sure to provide support for the tray with full length slots. I make an angle at the edge of the tray tied in at front/back.

Any 6303 will work fine. OEM seals are not expensive but their bearings are.

Aerodynamicist dont very well with liquids. They never have to deal with a liquids weight and the fact that it turns to gas at low pressure.

The big difference comes from 38s being able to run much leaner a part throttle and still have good response. This is where most time is spent and where an overly rich mixture affects run time. Much more so than a bigger carb flowing more air/fuel for the short bursts of full throttle.

Jetski ignitions produce a lot of rf noise. Get the ignition shielded and go for it.

Getting best response with big carbs (for everyone that constantly blips the throttle) requires having an overly rich pilot/popoff. The fuel flow difference between the cleanest possible setting and best response setting can be 25%. This split narrows with smaller carbs and increases with...

A standard unmodified 44sbn has the best dimensions for general freeride use. Its 43mm plate area and 39mm choke area makes for a strong enough signal to work with small engines yet provides enough flow for good power. There is a lot of Freudian psychology in the jetski world, bigger is always...

Your prop was not installed tight enough. Sometimes lube and debris on the threads will make a prop feel tight before it has hit bottom. There is also some torsional instability within the driveshaft when the pump is out of the water, that is why a lose prop tends to unscrew itself.

Well I am, of course. You are simply not asking the right questions nor providing enough information for anyone to help you get what you want.

You will need the pipe and porting as well as a lower pitch prop for best thrust. Modding the stock waterbox is a waste of time, unless you are looking for attention and like ringing ears.

Try leaning the pilot/popoff until you lose response for best run time.

Your mag pump/impeller has less load than what it replaced if you got a noticeable increase in thrust.

Or leave it alone and not annoy the rest of the world.

You are getting way ahead of your situation worrying about getting a Mag pump. First the entire pump inlet and mounting must be correct for whatever is going to be used. Thats where all the work is. You may not get much benefit from a Mag pump in clear water. You will get no benefit from a Mag...

A dedicated fan base like this tells me that the Rickter is the one to splash.

Im just surprised that hulls are still selling for that much knowing what it takes to build one. R&D has already been done, advertising is free between here and youtube. No part of making a hull is beyond the abillities of an indevidual with a small garage. I would chop an existing hull if all I...