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I'm talking about the difference between 61x and 6m6

Its internet explorer, not that i think thats a good thing. Did you start putting them in photobucket from then on

http://www.x-h2o.com/index.php?threads/making-of-the-snx-hull.146362/page-18 From here onwards the links stop working on my browser

I would love to see this project. I can only see to a certain point and then the links dont work anymore. Am I the only with this issue

No it's not the tpe. It has the best blowdown area of any JetSki cylinder you can buy due to its triple exhaust port

Makes you wonder why yamaha bother to make the change

The 650 has lot smaller reeds. It will never go as well

An fx1 and a superjet, the blaster is finished

yes prop and get rid of the 650 cases,

Yeah I could never understand that either

The pump is the biggest difference. 6m6 cases on one killing the power big time on ski 2 Lower compression in ski 2 there is way to many factors here to even try and make a definitive answer

not enough blow down in your port timing. The transfers are reversing the flow and causing ignition in the bottom of the cases. Lift or widen your exhaust port of run black fuel line. How ever if its just on start up then it likely just the rich mixture/fuel in the cases from sitting there...

bottom end ? i think you mean throttle response. If you make to much low end power on an fx1 the pump will never hook up. I would rather have a prealier motor in an fx1 that will allow the pump to get soem drive before loading it so hard. I am building an fx1 at the moment and I have gone high...

I am a true believer in twin carbs I would always run them. Except on a 61x just put a good 46 mikuni on it and enjoy it

No I don't have dyno charts. I didn't say I had dynoed it. I have seen dyno charts that prove it. I have built the occasional race two stroke as well. It's a commonly known fact around performance two stroke tuners

4 strokes maybe, Cold longevity sorry cold is higher wear. More power but higher wear.

Two strokes actually make more power the cooler they run, Cold seziure is a crock it will not happen to an engine thats already up to temp. The dyno proves that the colder you can run a two stroke the more power it makes

Most 62t cases are what

Wow there is some material been taken out of those cases

Forget running water injection, The pipe will not get up to temp fast enough after you turn the water off.