I think blaster bust their piston up because of no thrust washers alot of side to side when the piston is on the pin. I never understood why they done that. I can go from first hand about not running thrust washer in the lt.it run with out them but the piston doesnt last to long or the pin  that hold the rings in place either.  New owner and didn know about any forums at the time. Also wiseco said I didnt need them. Hell they make the piston and didnt know.

The blaster engine/piston is typically running within a few degrees of death at all times  Air flow to the cylinder is blocked by the frame tubes, shocks, bumper, and exhaust pipe.  We typically bore 5 to 10 times as many blaster cylinders as any other cylinders.  Most of the blasters cylinders look like nuclear melt downs.  Any engine in a Quad or three wheeler should be liquid cooled unless it is a drag only engine


The majority of the blasters we tear down and cylinders we bore that were still running before tear down have sighs of piston scuffing and mild seizures.  Mild seizures and piston scuffing increases the piston to cylinder wall clearance very rapidly and destroys the strength of the piston skirts

Excessive piston to cylinder wall clearance is the only thing that makes pistons crack and then break. 

The job of the thrust washers anywhere on the connecting rod is to center the rod between the crank webs.  Thrust washers do not influence the thrust in any direction on the piston against the cylinder wall.