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So I was doing a test and tune yesterday and I thought she was running pretty good but while pushed against the shore and running full throttle I choked the intake with my hand for a second and when I released... holy $h!t. That thing revved up and about jumped into the parking lot! The plugs...

On my buddies JS 550 at 45mph and yes that is a bolt welded to the top of the piston, so I guess it is possible to weld steel to aluminum LOL....

Bought this js440 bone stock for $400. Then someone crashed into the back of the blue 440 Thanks NICK.... So he got me a in great shape js300 hull from michigan..... I swapped everything over and we rode it one tank of gas through her then:eek:... the throttle stuck wide and it smashed hard...

Ingredients req. 2- 1/2 drive 1 1/16" sockets. 1- China Freight flux core MIG. 1- 4 1/2" angle grinder with cutoff wheel. BAM!! Free 440 impeller Removal tool! Your Welcome broke people like me.

So me and a buddy had an idea if this would work? Kind of similar to a siphon on a jet pump. Worked a lot better than expected.

So I've done a lot of reading about putting a 750 into a 440, It's currently a Half 300 hull Half 440 hull with a 440. Has a custom-built expansion chamber, mariner down pipe, west coast manifold, and a 550 pump. Been currently having a lot of problems with weak spark and just not really...

So ive had this js440 for a while now and its always had this thing where 1 out of 3 rides, after about 2 hrs of riding she likes to act funny at low rpm. Runs great but after rippin it for a while (1min or so of full thottle) she wants to bog out if you let it go down around idle rpm range? I...