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Very cool hull you should definitely do a conversion.

If the impeller moved forward I'm sure it trashed the crank and crankcase be sure to check them.

It's taken me years to build my collection still on the hunt for a few more I'm missing

Decided I would see what the dry weight on this conversion is, only fluid I didn't remove was oil which I estimate at 5 quarts is roughly 10 lbs. The ski came in at 661.6 lbs which if you estimate...

If it's stock yes but I have a 310 that runs 73 mph

Here we go now I'm getting somewhere. 68.1 mph at 7570 rpm this was with just under 1/2 a tank of gas. I'm going to try it again when I get the low fuel light to come on. Also this is still with a...

Working on the fuel pressure testing hit 66.4 mph at 51 psi.
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Fits great had to move all my electronics because of how much further out the intake comes off the engine. Wouldn't be an issue in an stx. The ECU is off a 2016 stx I am not messing with the tune...

Ultra 310 intake finally installed also added a fuel pressure regulator and upgraded fuel pump.
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Looking for a new or like new oem ultra 250 260 cover please pm me if you have one you want to sell.
http://greenhulk.net/forums/attachment.php?attachmentid=456061&stc=1

Nice work steve45. Yes grumpy i did get those cams installed but to get any real gain from them i had to put a set of adjustable gears on them from kawi preformance. The cams definitely made a...

Not yet still a work in progress.

Nice work it looks great.

I have 2 for sale but steve45 has expressed interest in them I will let you know if he doesn't buy them. I didn't know you were doing a conversion what year ski are you converting

I have several ultra 150's and 130's all different years im parting out. Please message what parts you are looking for.
http://greenhulk.net/forums/attachment.php?attachmentid=452729&stc=1...

Nice if you're ever in KC let me know.

The G8 is my wife's car 2009 bought it brand new.
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I was under the impression riva's stage one tune is a 93 octane tune but I'm not sure so I have emailed riva to confirm.

Yeah changing the pump would have made getting more top end a lot easier, but i would have had to modify the pump tunnel if i use a larger pump. I think on this conversion i just wanted to change...

Well been playing around with it for about a week now nothing new to update top speed, still trying to figure out the best pump setup. I definitely have a lot more power on the bottom end and mid...

Here are some more pictures im going to try and do a video soon of everything thats been done. Love the newer style gauge and all the real carbon fiber....

Conversion grades almost done! Lost 30lbs and gained 20 hp.
http://greenhulk.net/forums/attachment.php?attachmentid=450285&stc=1

I used a 2008 250x rotor on a 2004 STX 15f. It fit without any modifications

Do you have the cams from the 260x still?

Checked the injectors they are not working, i know everything is good on this engine because it starts and runs fine on a different harness and ecu. so its either the harness or ecu, is there anyway...