Originally Posted by aaron joy

I have a shark engine that I am going to break in for a friend of mine as we speak. They are extremely limited in that US is only getting 100 out of 400 in the world. It should be good the sleeve is cut like swiss cheese and the crank appears to weighted from the illustration included with the engine. I may be able to open it up for pics, I will ask my buddy if he minds. It does come with the better carb with the idle screw behind the carb.

Try a Killer 9, it is a runner. Smooth and great on mileage with 7mm insert.