[americano]

Does anyone know what the optimal Exhaust Gas Temperature is for an '02 (EGT sensor is 6" from center of cyl)?

[loff]

How about getting the bike warmed up and then adjust the fuel screw to rich of peak EGT.

Where did you get the EGT gauge?

[americano]

EGT is mychron (AIM). the engine is in a superkart and there is not a screw since it is jetted. On 2-cycle, you develop the peak EGT under a load at the end of a straight and cannot develop the same EGT without a load....is this different for 4-stroke?

[loff]

My experience with an EGT gauge is from flying small airplanes.

there is not a screw since it is jetted

If you have a carburetor you should have either a fuel screw or an air screw. Otherwise you could not make small adjustments to account for temperature, elevation and humidity.

[americano]

yeah, there are adjustment screws for idle stop and idle mixture, but the mains are fixed jets on my engine. On my 250 and my 125, I have adjustments (on the 125, it comes from IAME with a hand adjustable needle, and on my 250, I have a dail that I can turn while I am racing.