Checking to see if she has a fever

I just bought a infrared temperature gun, i would like to do the temp check on my pipes. Does anyone have info on how and temp range for a 82 xj750 maxim ?

 

How Hot is Hot?:

The following information was measured on a stock, un-modified XJ650 YICS engine, with the air temperature between 60- to 70-F. Modified engines, engine tune conditions, different air temperatures and humidity levels, etc. will affect these readings up or down.

Using our HCP9803 Digital Infrared Heat Thermometer, we verify that the cylinders and the valve cover are the hottest part of the engine, with the front of the cylinder jugs (exhaust port side) reaching almost 390-F during and immediately after spirited riding, while the intake side of the cylinders were consistently 50-degrees cooler (350-F). Cylinder heads, surprisingly, remain much cooler, just barely breaking the 280-F mark.

Engine upper case and engine side covers vary in their readings depending on which cover and where on the engine case the reading is taken, but in all cases are substantially cooler than the cylinder head, valvecover, or jugs.

Brake rotors were measured at 300-F or more after 10 consecutive maximum-force braking events from 50mph. Calipers were approximately 50-F cooler.

Rear final drive units are like refrigerators, and were never measured at over 140-F.

 

Can the temp gun help with setting the air/fuel mix screw ?

 

Yes, but not as accurately as a ColorTune plug, or reading the spark plug color.

 

About how many miles do i need to ride, then check the plugs ? I put new plugs in and rode about 40 mi. then checked... very little change.