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Ok guys. I just have to tune this thing now. It was running way to lean. Engine got super hot. So I thing a good place to start is to lower the pop off by about 10 psi, and move up jet sizes about 20 sizes up each carb, both pilot and main. Pilot was the leanest, but might as well make the top...

Oh, and recreational porting. Port timing (height) wasn't raised at all. Just widened

Hi, I'm still kinda new to superjets and Yamaha based skis, but I'll say right now I'll take a yami over a kwaks any day! My question is thus, what jetting should I try for my 650 6m6 superjet? It has the following- wetjet kraze/ west coast pipe, Factory x girdled head 180/180, k and n air...

Yes I did. I used spacers and mounted one bolt to the 550 ebox location, top side by battery, and drilled a hole thorough both the 750 ebox and bondrail and put a bolt through. Its tightly mounted on 2 bolts.

Look at pics lol

How do we go about throwing messages instead of throwing hands??

let's go punk

Went riding. Of course needed some tweaking, was way too lean. Water box came disconnected and my straight rear exhaust almost sunk my ski. But other than that it was completely dry and leak free before the water box came disconnected. Trying again tommorow. BTW, it rips lol

I almost back flipped mine yesterday. Its crazy powerful

Nice 550sx. I've always liked the stock decals ALOT. I'd rather buy a 1995 550sx beefed up than a 1995 750sxi, any day!

I had to cut mine to clear. Busted first day. Guess I just wasn't lucky

I'll try to hitch a wave Thursday!!

problem!?? U wanna throw messages!!???

Don't like it??

Pretty much done. Riding thursday

My updated progress

If you can apply more layers while the resin is still tacky! But if u want to sand then re- apply fiberglass. Wait at least 20 hours. Us composites resin right??

Thanks for the advice guys. If it happens- I'll let you know

And yes I do realize the port timing on both are different. But I want an idea of how much I should widen it. No I'm too busy blowing money on other skis to buy a 701 top end lol. Plus the only real difference between the two is the port layout and sizes. The 50cc difference won't really make a...

In going to be widening the exhaust ports on my 6m6 650 superjet. I want to make them the same width as a 701 61x top end exhaust ports. Can somebody measure the width and approx height if their 701 cylinder ports??