[powerstrokeon40s]

Recently Purchased a 2009 Fox Carbide 150cc with a crank/no start and 390 on the odo a few days ago. Brought it home and did a diag. Had spark and fuel so i would imagine it was a compression problem. Lots of puffing coming out of the valve cover vent hose when cranking. Tore apart engine and found piston cracked in multiple places.

Ordered a 155cc BBK. A11 cam. Intake. Jets. Im going to gut the stock can.

Some advice im looking for is what number jets would you rec. with these mods along with A/F screw setting to begin with. I ordered a 40 pilot and 138 /140 main jets. What is the stock rev limit? When should i look into getting a CDI? And as for timing it seems T mark on F wheel is lined up with case mark when at TDC and when i put the cam in i think big hole is suppoed to be a 12 o clock and smaller holes parallel with head surface.

Let me know what you think. thanks