95' Mits Triton overheating

Remove the Thermostat, I would Try as they are to warm motor up on Cold Starts.& in the North it is hot enough ,& they do restrict the water flow,or you might have a Air pocket in the system,as you seem to have covered most other.Check your oil Filters, I replace my every 5000 Klms with new Oil also.

Are you sure that there is something wrong ? With a pressure cap on the radiator you can get some local boiling after shut down as you don't have the fan running.

jay.
Interesting problem. The things left to check are the fan belt and pulleys. You should be able to pull as hard as you can on the alternator fan without the pulley slipping. The next is the viscous hub, you have topped it up but it may have a mechanical problem. when you pull up with a hot motor the fan should feel stiffer to rotate than when it is cold. If you are not sure about the hub make a solid drive by cutting a piece of sheet steel about 150 square drill a 14 hole in the centre and the four holes for the water pump flange then a hole in each corner of the sheet, place the sheet between the pump pulley and the fan then cable tie's from the corner of the sheet around the fan blades, this will make the fan run faster than normal and will be noisy but it will prove a point . good luck Eric.

Tried " de-gunking " your engine, with that Chem_tec " degunker "
they advertise it in the magazines.. and re-check your botton radiator hose, a lot of the time they only close when they get hot and soft, and under load, ,,, which by looking under the bonnet, you will not pick up !
Cheers
Bucky

When you take the radiator cap off and look straight down inside the radiator what do the tubes look like ? Is there any calcium build up from using hard water ?

From a previous question and answer I would be having a good look at the viscous fan.

Hi, the next thing that I would check especially on a turboed engine is if the turbo is operating correctly and to make sure the motor isn't being over fuelled as this will cause overheating and possibly holes in the pistons down the track.
Happy new year.
Tour Boy

Jay, I have the identical Triton and it does get hot as well. Mine is a 94 model and just clicked over 90,000km. It is all standard and the motor has never been touched apart from the 5000km oil/filter changes and I have replaced the coolant once. It is the way they are, but mine got a little worse when I fitted a second battery. this then got me thinking, so after taking it for a sprint on the beach I let it idle and see how long it took to cool down. After 5 minutes it was a little cooler but still hot. I lifted the bonnet and it cooled down in about 2 minutes. What I believe is happening is that the air flowing thru from the radiator cannot get out from the engine bay. Try putting your hand above the fan and giving it a rev. You will feel the air pushing your hand up with some force. Then picture where the air would go when the bonnet is down and you will see there isnt much room for it to escape. When I put the second battery in the exact position on the left side of the car as the original I have blocked even more room for the air to get out. I was think about fitting a vent scoop in the bonnet above the fan, but due to the frame of the bonnet, I have been game enough to try. With you living in the hot outback try taking the bonnet off on a strech of road you know it would normally get hot on, this would prove the theory pretty quick. I was also going to get a 9inch elect fan and put on the outside, down the bottom of the radiator. The noise you are hearing will be the air coming back from the motor and back into the air filter when it idles making the water valve flap madly. Put your hand under the air canister and there is a rubber valve that lets the water out, and you will feel it flapping. Another thing I was going to try for the heat issue was to disconnect the breather pipe from the top of the tappet cover. If you unplug this from your air inlet pipe you will feel a lot of hot air comming out of the engine and into the air inlet. This effectivley is putting quite a lot of heat into the engine before the fuel is burnt.