GEN 2 Most likely to break off-road

[zombiekiller]

@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.

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?

 

[PlainJane]

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.

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.

 

[PlainJane]

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?

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.

 

[zombiekiller]

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.

you do not thermodynamics so good, my friend.

 

[zombiekiller]

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.

and what restriction would that be? you only change one thing at a time to test effectiveness. i changed one thing. it had a tangible impact.

if you still aren't getting this, then clearly you are trolling.

 

[PlainJane]

I am saying, IMO, 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.

 

[zombiekiller]

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.

 

[Raptus]

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.

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.

 

[zombiekiller]

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.

yes, it would be. Now, instead of the lightbar, imagine 5 LP9s or 6 LP6s where that lightbar is snd you can imagine why youd want every cooling advantage that you can get.

 

[onthebrake]

I JUST installed a SPD 170 thermostat yesterday. My truck ( 2017 SCREW ) was running 232 - 240 quite frequently in 53 F outside temps, no grade, just cruising. Plus my fans were on ALL the time.

NOW, my fans aren't on and the truck is much cooler. BEST upgrade ever. FYI, the SPD o-ring did not seal and I had the reuse the stock o-ring. Other than that, I am very pleased and so is the truck.