GEN 2 Most likely to break off-road

PlainJane said:

@zombiekiller's real-life, real-world experience is interesting, but does not point to using a lower temperature thermostat effecting his overheating issue. It does suggest that an SPD thermostat is a good product and the flow restriction of their thermostat is correct.

Only comparing different temperature SPD thermostats will yield a proper comparison.

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CigarPundit said:

I don't understand your reasoning. It seems to me that if you get the coolant circulating sooner (at a lower temp), the cooling system is going to be more effective at keeping the ultimate engine temp lower.

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zombiekiller said:

I'm not understanding how " I hit 250 degrees on one trip, changed the thermostat to a 170, then on the next trip didn't see higher than 214." isn't clear enough for you.


care to enlighten me as to what is being misunderstood with regard to the correlation between switching thermostats and seeing lower coolant temps?

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PlainJane said:

The efficiency of the cooling system is very complex, but once the thermostat is open, its function is to control the speed/volume of coolant passing through the system, To fast a coolant flow will not allow the heat to transfer to the coolant. The result is a higher running temperature. Proper design of the restriction of the coolant flow is very important part of the design.

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PlainJane said:

I am not disputing you seeing lower temperatures, just that it was caused by a lowwer temperature thermostat and not just a different restriction in the system.

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PlainJane said:

I am saying, IMO, is its a bad idea to change the thermostat temperature with a stock tune. I would spend my monies on a larger transmission cooler.

You change the thermostat temperature in conjunction with a tune for more power.
Double check with your friends at SPD performance!

You might have changed the coolant concentration.

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zombiekiller said:

Because if you're running lights above the main hoop of the bumper and you drive hard in Baja mode, you'll overheat the truck.

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Raptus said:

View attachment 130942

Would this be considered running lights above the main hoop of the bumper? If not, what is? I’ve never heard that term before. Thanks in advance.

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