120ºC coolant temperature = engine failure.
The cruising temperature should be 95ºC.
3000 rpm is fine for combat.
At +6¼ psi boost you need at least 2080 rpm to avoid detonation. This is important with 2 position props. You can't just change to coarse pitch at full throttle, because you're likely to go below the minimum rpm for your boost and break something. Therefore with a 2 position prop I throttle back to 0 boost before switching to coarse pitch.
Oil temperature should be 90ºC for cruising and 95ºC max.
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