ImBroken
Still Lurking...
Supporter
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While I will agree that it takes most engines a good gallon to really get broken in, I've done the heat cycle and had my last three motors on the track by what would be the third tank or maybe 20 minutes of overall run time. They all scream, and show no signs of tiring out. Hell my P5 had over four gallons on it and it couldn't be turned over by hand.I want to add to this, because there is a decent flaw. On many engines, they require a good gallon or more in order to safely break in the engine. Sure you can heat cycle them, but they are nowhere near ready for the track just yet... they need to be babied for the first gallon.
No engine is safely broken in UNTIL you can take out the glow plug and turn the flywheel by hand, let the piston pass the top dead center in the sleeve. When you don't have any significant friction or when it feels just a little snug, you can start leaning the main needle incrementally in small steps. After its tuned, its ready for the track.
you may ruin a couple of motors trying to come up with the best way but if you dont have the money to be in this hobby then maybe you should stick with electric!!!!!!! just my two cents