EGT sensors measure the tempurature of exhaust gases. As I understand it, Exhaust gas temperature is directly related to the air/fuel ratio (timing and quality of burn within the cylinder probably affect EGT it as well) - the leaner the ratio, the higher the temps, the richer the ratio, the lower the temps. Melting of pistons obviously occur at extreme temps. I believe the power/safe range is somewhere between 1150 and 1250 degrees F but definitely check with the experts on this. Also there is a lot of variance in temps just by where you place the sensors (distance, centering, and depth).06REV440 said:I heard somewhere that with a egt gauge u can tell how rich and lean you are running, if this is true, how will you know?, doesnt the gauge just tell you the temp?
or i might of heard wrong, confused either way?