Motor running v. hot

[evertonal]

I run a Yokomo B-Max with a Speed Passion 2.0 GT Pro speedo and a Speed Passion V3 6.5 T motor. After running the final heat on wednesday night I measured the temperature of the motor. The temp was 104 degrees C! A friend running a cat SX with an Exceed 6.5 T combo measured his motor temp as 58 degrees C. My gearing is not too much 87 spur, 20 T pinion and the drive train feels fairly free. The timing on the speedo is set to the lowest setting. Any advice on what I could be doing wrong would be gratefully appreciated.