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hi Guys! I was wondering if the kawasaki 550 piston port and reed valve engines have the same pistons? Also do any of you guys know how much you can mill off the cylender deck befor the compression gets too high for premeum gas? one of the drag racing guys in town here has milled .136 (almost...

I finally got my old js440 out for a ride today (my first ride ever). This is the best thing I have ever tried in my life! I cant wait to get out to the lake, so far I just got to try it in the slew across the road but I think that little taste has sparked an infurno, I think I have finally...

hi guys since I got the engine out of my js440 (crank rebuild) I was just wondering if there are any weak points that I should inspect before reasembly (like on the hull, pump, or pole) any advice is great, I'm completely new to this sport, I'm fixing this thing and I dont even know how to ride...

hey does anyone know where I can find like pipe kits and other hot rod stuff for my 85' js440, also I was wondering if any of you guys have any pics of body mods on this bodystyle (like internal gas filler and modified air intake and things of that nature) any help or cool ideas are infinatly...

hi guys, nice to meet you all! I'm new to this sport. all my life i'v wanted one of these stand up jet skis and I finally picked one up. its a 1985 js440 but it has a bad crank bearing, I was hoping you guys could help me out. I am wondering what is involved in swapping the newer js550 or 650 in...