Yep,
Remember these are "air cooled" engines so if its 105 degrees outside with high humidity don't expect 220 to be the target temp anymore. Humidity and altitude aside, here is a quick scale that works on my .21 size RB's. Also keep a eye on the smoke trail, but keep in mind some fuels smoke more regardless of temp, so don't let that be your only guide.
Approximate safe running temps:
70 degrees outside air= 205-220 engine temp.
80 degrees outside air= 220-230 engine temp.
90 degrees outside air= 225-245 engine temp.
100+ degrees outside air= 250-270 engine temp.
270= is about the max you should run these motors.
I noticed the L2G heads run about 5-10 degrees warmer on the temp gun, because the temp sensor sits closer to the head button. With the temp gun closer to the head button your reading a slight hotter area of the head.
If you want these motors to go 10+ gallons of fuel, keep your air filter very very clean, and don't get the motor over 245 if possible. Again, I cant stress the Air filter issue enough! Also change the connecting rod at 2-3 gallon mark.
Piece!
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