Ok, finally I bought a temp gun..

I did a 1 minute run in our house ( Can't give full throttle ) and after that minute it was 180F!! That's too hot.. Somebody know a solution? My cousin gave me a huge aluminium heat sink, I will try to get that on the Mamba-25..
But are they maybe some other solutions?
And can somebody tell me if this is normal or not? (I dont think so)