50K with a proper break in should last, event event after event.

my bad SR? the comp numbers were 175, 170, 135, 180 (thottle closed). when i tore the motor down, the oil rings and lands were cracked and broken... just saying...

no proper break in, and improper maintainance will burn a motor up in 50K miles easy... hit 4-5 events (or a shit ton of daily driving abuse) on one oil change because "it hasn't hit 3000 miles yet" or whatever will kill a motor, starting with rings/lands...