Originally Posted by AreCee
Not really. An engine running lean will not have good performance. A properly tuned engine will be in between 210 to 290 F (99 to143 C) and optimally it will be around 250 F +/- 20 (120 +/- 6 C). It all depends on the engine, air temperature, track conditions, driving style, fuel, glow plug, etc. so you can see there are many variables to consider. Therefore if it preforms well, exhibits a smoke trail on acceleration and doesn't load up or bog down then you're in the right range.
u r right on! my .21 RB WS7 1 runs around 250F +/- sometime i push it to 280F. this engine is sweet on idle... those deep sond is sooo nice. The problem is, it takes longer time to warm up on first run. temperture will hoover around 190F for 1st half tank and the buggys run some what sluggish but when the engine warms up to 200F it's power pack.
I agree not to tune on temperature but i strongly believe that the temperature reading serve as a guide as to how far you can push the engine before it Kaboom!