Hi all

I was just thinking. All TE to TH ran at the same operating temp. But tj to es. All ran abit hotter. So i was wondering if the coolant temprature sendor are different between those models.?

Thanks Kurt

Hi all

I was just thinking. All TE to TH ran at the same operating temp. But tj to es. All ran abit hotter. So i was wondering if the coolant temprature sendor are different between those models.?

Thanks Kurt

Well given that the temp isnt controlled via the sender its controlled via the thermostat, id say no, When i had my datascan unit it read 104C in the TH 104C in a TF and 104 in a KJ. so yeah they are exact same temp, also the part no for the thermostats are also the same

why do magnas run so hot? my evo's temp gauge very very rarely hits 90deg..usually sits on 85deg.. thats with ralliart map though but would only be a few deg's more without it

the only asnwer ive been able to come up with from research is the operating temp the engine is designed and tuned to run at is dependant on the conditions it spends most its driving and the purpose of the car.

With no solid info only tidbits of info here and there, its apaprently along the lines of, the hotter (closer to 100degrees) you run the coolant, the more stable the temps under all driving conditions and hence fuel economy and tune can be made to suit smooth, efficinet running at the cost of power. Cars with a bit of sports inmind, such as your evo, and things like Legnum, run cooler, to promote safer and higher power delivery at the cost of some efficeincy. Temps seem more likely to rise in cars like this when driven hard say as high as 90degrees, but still make there power/ performance benchmarks and as a result normally run cooler when driven sedately aswell.

For tuning purposes, fuel efficency requires very repeatable engine parameters and at 100degrees there isnt likely to be a massive increase in temp, where as keeping temps at 80, might seem them rse to 90 or more under certain conditions.

interesting! thanks for the info mate

Surely OIL temp is more important than WATER temp?

yeh ive got oil temp gauge aswell.. it runs somewhere similar actually... roughly 90degress

Thats one cool car gremlin :P

Well given that the temp isnt controlled via the sender its controlled via the thermostat, id say no, When i had my datascan unit it read 104C in the TH 104C in a TF and 104 in a KJ. so yeah they are exact same temp, also the part no for the thermostats are also the same

In a way u would think the cts sensor controls the temp because it turns the fan on at a certain temp and off again. So i was thinking cause definatly on the gauage the models after TH tj onwards on the gauge is definatly hotter so i was thinking the fan may turn on later on those models.

In a way u would think the cts sensor controls the temp because it turns the fan on at a certain temp and off again. So i was thinking cause definatly on the gauage the models after TH tj onwards on the gauge is definatly hotter so i was thinking the fan may turn on later on those models.

Again, we were getting 104 across a TF TH and a KJ (TJ) so it throws that theory out the window, unless the gauge is different its all the same.

Suggestion - find out what the safe temp range is for the oil you are running, and mark that on your temp guage with red texta, and watch this more closely than the water temp. Air cooled engines - hotted VW, light plane engines - rely on this guage to inform the operator how the engine is doing work/health wise. Much more informative and responsive than a water temp guage. I'd like one on my V6 and on the gearbox as well!

Suggestion - find out what the safe temp range is for the oil you are running, and mark that on your temp guage with red texta, and watch this more closely than the water temp. Air cooled engines - hotted VW, light plane engines - rely on this guage to inform the operator how the engine is doing work/health wise. Much more informative and responsive than a water temp guage. I'd like one on my V6 and on the gearbox as well!

Yeah except instead of marking it with a texta :nuts: just rotate the guage so when its at correct temp the needle is facing straight up, if you have a bunch of aftermarket guages good idea to do this with all of them.

ok then! Personally I prefer a white line for min working temp and a red line for max working temp.(NOT necessarily done with texta though!)

ok then! Personally I prefer a white line for min working temp and a red line for max working temp.(NOT necessarily done with texta though!)

Sorry mate wasn't raggin' just the texta sounded dodgy thats all.

A hot engine is also a more efficient engine when it comes to emissions. catalytic converters do not operate very well unless they have been warmed up for a considerable length of time. I am guessing that running an engine hotter will make it more friendly to the environment with less harmful emissions being passed through.

yeah after even more reading althought its not said, that is the reason for different engine coolant temps between cars.

The more stoichometric the AFR's the better for the environment as the polllution controls work at optimum, and having hotter engines means dips or highs in tempreture wont affect the AFr/tuning of the vehicle so all control systems are kept in their healthy range for longer periods of time.

yeh ive got oil temp gauge aswell.. it runs somewhere similar actually... roughly 90degress
Same with mine. I took mine for a spirited drive the other day for about 20 mins straight and the highest the oil temp got was 100 degrees.