Hi guys.

I just bought one of those laser guided infra red temp guns.
I want to use it on my cowled ZDZ 90 engine to see if the cooling is sufficient in my scale warbird.

What sort of temp should I be seeing while the engine is running, and just after shutdown when I messure on the front fins ?
And how hot can it be before the engine is damaged when messuring on the front cooling fins?

I realize that messuring on the cooling fins in front are ofcourse not the hottest place on the engine, but there must be a a rule of thumb to how hot you can go



Heres a picture of my cowl.