Originally Posted by Kyosho3PKRacer
Try running a few tanks on idle and then a few at low throttle or josh cyrul has a breaking in method i have seen somewhere although it looks pretty harsh for the motor.
I run a sirio 3 p and it seems to run best with 16-20 % nitro and less oil content than what you would usually use, i found it ran alot better with less but don't go to far or you will end up breaking it lol but i use 5 and 2 i think most are like 8 or 10 and 4.
Idleing a motor for 3 tanks without geting it up to temp. is doing more harm then good! I like to heat cycle my engines. Get the temp up quickly to 190 then cool down then up to 200 and cool down again. do this untill you get it up to 240 and then tune it on the track.I get it to temp. by adjusting the low end needle leaner each time. After break-in I reset the low-speed needle to propper seting.