Remember these steps always. Idle. HSN, LSN, Idle. Follow those steps when tuning. If she's bogging right off the line, richen that LSN just a little. If it's running hot after continous full throttle it might need richened a little.
Something to remember always. I've learned, sometimes a motor will run way to rich, and have an extended period of burning in the chamber, which can actually cause higher heat. Sometimes leaning it out when the motor runs like that, it will actually cool it down. You'll notice a ton by the condition of your plug as well. If it comes out right after a run where it's white, it is usually running too lean, if it's black it's too rich. If it's a goldish color, it's good to go. As has been said in some previous posts though, some motors just run hot. Don't rely on the temps only to tune the engine. Sometimes performance can be a better tuning method.
Take it out, reset the needles to factory. Start tuning from there. Drop the temp gun, get it dialed in where you like it. THEN, and only then, start watching the temps. That's a good method to use.
Most engines run around these ranges, 200F to 260F, but I've heard of people running motors rich and reaching over 300F on occasion. Each motor is different, and sometimes it just depends on the current conditions. Also, if you're running a body, make sure to cut some ventilation holes like the windshield so that motor can breathe. I've seen people run bodies without any ventilation and burn motors up quick. 🙂
