Turbo Temps

[mbjunior99]

Ok, anyone got some proof? I think hiddeous runs one as well if I'm not mistaken.

[dingah2]

With reference to the original quation about does a turbo run hotter than an NA the answer is YES.

Take your turbo for a spirited bit of driving - not for long, 5 mins will do and then stop in a dark place such as your garage with the lights out, pop the bonnet and enjoy the irridescent glow!'

That's heat unique to the operation of your turbo.

Dingah

[JimmyXR6T04]

I dont believe that, thermostats only restrict the water supply to the radiator when the engine starts up from cold helping it to get to full temp quicker. 90% of engine wear occursr when cold due to larger clearances and cold oil not protecting like warm oil. once the engine reaches operating temp, it is fully open and therefore cant make it run cooler than it otherwise would. waste of money... some people believe anything...

as I said, in conjunction with edit, and the way it is tuned, the cooler thermostat has helped. Let me explain my situation...

I had a mail order tune from XFT, previously, Simon supplied a tune to be installed and "touched" up by Chris from blue power when he was in canberra. This resulted in 250rwkw. Not long after, I decided I wanted more power, so I sent my box back to Simon, and he put in a 300rwkw tune for me. I added bigger injectors, fuel pump, intercooler and cat. Anyways, Simon thought that a cooler thermostat was fitted to my car when he supplied the tune.. but, one was never fitted.

Hence, I'd drive around, and even in the middle of winter the thermo fans would come on at 1/4 temp and stay on for the rest of the journey (temp gauge still reached halfway).. this was somewhat concerning so I called Simon and spoke to him, and it was quickly agreed that Chris mustn't have fitted the cooler thermostat on his visit. And Simon had tuned the car to factor this in. Once the cooler thermostat was fitted the thermo fans have been on once or twice, when the outside temp was hot and the car had been turned off for a few mins.. or in spirited driving. Otherwise, in conjunction with edit and the cooler thermostat my car hasn't been near 1/2 way.

Hope this clears it up a bit.

[groper]

ok, I should point out there could be execptions considering where you live -in a cold climate. im in the northern tropics so it doesnt apply up here as it never gets below about 14 degrees in the middle of a cold winters night.

but say your driving along very calmly 60km/h on a cold canberra night, flat road, very light loads etc I suppose the engine temp could drop low enough for the thermostat to kick in and therefore a cooler thermostat would run the engine cooler. otherwise, my first statement still stands.

as far as your situations goes, ill take a guess at whats happened. the tune you got was telling the thermo fans to come on at a lower temp, which is good practice IMHO.

Then, your original thermostat may have been too hot (they play up all the time and have just changed mine in my au), they easily can make an engine run too hot but they cant make it run cooler unless in a situation I described above. when you changed it out, it fixed the problem and now your running where it should be.

[howitzer85]

A colder thermostat will open earlier then the stock one allowing the cooling process to start earlier.

Lets say the stock thermostat opens at 80* (not sure what they open at this is just for explanation). Then the engine will only start to be cooled at 80* - when the thermostat opens to allow coolant thru the radiator. If the colder one opens at 70* (again don't know the real numbers, just for explanation) then the cooling process will start when the engine is at 70* - which will keep the engine running cooler.

The purpose of the engine running cooler is to allow more advanced timing to be made with less risk of detonation

This is just my understanding correct me if I am wrong.

[groper]

yeah your right, but once they have opened, they are open. ie once the engine IS hot, thermostat has no effect.the only factors governing the temp once hot, is airflow, load, and radiator size/effiency. the colder thermostat will just let the motor warm up slower...

[xrdreaming]

That was always my understanding too. Once they are open, they are open, the cooler thermostats are not great for built engines as the forged pistons want to get up to operating temps quickly.

[tab]

The cooler thermostat would help your auto get up to temp sooner as well wouldn't it? (via the heat exchanger in the radiator)

[dingah2]

No Tab - the other way round if anything at all.

Dingah

[Ninka]

No Tab - the other way round if anything at all.

Dingah

Sorry guys, you are both wrong

A thermostat is a thermo-activated valve, which remains closed until a certain temperature is achieved, so whether you run a 'cool' or a 'warm' thermostat, has absolutely no influence on how quickly the engine or turbo warms up.

Once the temperature is reached, the thermostat opens, and the water circulates through the radiator to keep the engine cooled. With a 'cool' thermostat, you will have more heatsink capacity, I.e. the difference between the operating temperature and when the engine will overheat, simply because there is a bigger differential temperature between operating and maximum temp.

In an ideal world, the cooling capacity of the cooling system should be able to keep the engine temperature under control, but our cars produce more heat than the cooling system is capable of dissipating, and thus the engine temp. increases when driven hard, and this will make the engine less efficient (if it gets too hot).

Hope this explains it!