This was the summer of 1992 or 93. I destroyed 2 brand new Michelin XZX 165s in less than 10 minutes with this 2nd gear burn out. 1600 single port, c/w crank, 30 pict 3, 1.25 rockers, header w/tuck away, 009. I could tear the centers out of clutch discs this engine made so much power.