Originally Posted by
satoch
What a coincidence. I had a used con rod let loose tonight at practice. In all fairness it had 5.5 gallons on it and I then used it to break in a new piston/sleeve. I knew I should've put the new one in but I went one tank too many. Oh well.
Good news is no damage to the newly broken in P/S, crank or case!

No harm no foul IMO.
You're one lucky summafitch

Mine cracked on the main back straight on my track at full throttle. Therefore slamming the cracked con rod right against the crankcase and piston sleeve. Needless to say it's all banged up. But no worries... I got another GO engine I just finished 5 tanks on (this time with heat gun). My losi box with lipo struggles with it lol.
BTW I also have another conrod ready to go in at 2 gallons, not taking chances this time.