Temperature problem at Hyundai Galloper

Hello everyone, I am a rookie here and I have not been able to find an Hyundai Galloper exploded manual in Spanish and much less someone who really solved the temperature problem of these engines if someone has knowledge of this I thank you.

What is the problem you have with the temperature?

Help you can help you but fortune tellers are not explained better.

Short circuit and machote apologize that I do not explain more but at the moment that we were writing it hot; the following happens to me.
My compadre bought a Galloper 2.5 4x4 Turbo Interculler walking in the city and even regulating the time the temperature is maintained but does nothing but climb to the route and reach 110 km/h that bursts the radiator and blows the joint because the temperature clock arrives and is planted between the two points, I tell you that we try up to time.
-We do the thermostat
-We shocked the bisco
-We repeal the radiator
-We put on a point the water pump
-we enlarge the passage of water to the bonba
and we also replace a joint by a blind (advice of a forum) of a device that is near the turbo that emits hot gases.

I don't have all the data but I think it stagnates a compression leakage problem either because of the cylinder head or a cylinder shirt that only loses high work regimenes. I can advise you to make a hydraulic test to the head and inspect the cylinder shirts. By data of that engine is a Mitsubishi 2.5 the same one that brings the van l 200.