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Jason
Dodge Dakota
6/10/2001
12:41:05
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 Subject: 160' Thermostat
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Message:
I have a 97 dakota 5.2 auto. I installed a 160' thermostat a few weeks ago and I have noticed a slight increase in power. My temp gauge reads just barely into operating range and sometimes a little higher. It is definately running alot cooler than the stock 195' Tstat that was in there. I have noticed that everyone recommends the 180'. Why not go to 160'? I just had my truck inspected and it still passed with flying colors. So I am assuming that it is not continually running in closed loop mode.
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Anthony
Dodge Dakota
6/11/2001
12:30:41
| RE: 160' Thermostat
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Message:
I just installed a 180, it works great. I heard that using a 160 can cause your sensors to not heat up enough to register reading correctly! That could also trip your computer an trigger your check engine light. Also 160 might not work well in the northern states where it's cold alot.
I'm sure there more why's and why not's.
My 180 just goes over a hair above the normal temp line. The 1/4 area. Not almost the 1/2 area that the 195 runs at! More power baby!
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SpeedTweaks
Dakota Enthusiast
6/11/2001
12:41:59
| RE: 160' Thermostat
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Message:
The Magnum engines runs best at 180-185 degrees. The 160 may be too cold and may also trip the MIL occasionally.
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Jason
Dodge Dakota
6/11/2001
14:41:38
| RE: 160' Thermostat
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Message:
I am in Texas, So I feel safe to say my truck shouldnt run too cold, as long as it is in operating temp. My belief is that colder cylinder head temp promotes longer fuel burn. This increase torque. Also detonation will be less of a problem and you can run lower octane fuel which is more economical and you should get the same HP/TQ figures if not more than running a hotter T Stat and high octane fuel. Octane is just a measurement of rate of burn. The higher the octane, the slower the burn. Jet fuel is like kerosene with an octane rating from 120 and up, and we all know that kerosene burns slower than gasoline. So if the head temp is cooler, then octane requirement is less because the fuel is already burning at a slower rate.
Please correct me if I am wrong. I am in no way saying we need to run 32' T Stats based on what I just said, because gasoline engines do require enough heat to allow moving (and non moving) parts to expand to tolerances. But I beleive that a 160' T Stat should actually keep things even cooler. My Dakota has had 0 problems since the 160' install. No lights, no codes. So I do not see this as a problem for use at least in Texas.
Anyways, thanks for the follow ups!
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Andy Bosi
Dodge Dakota
6/11/2001
16:38:14
| RE: 160' Thermostat
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Message:
On the same subject of thermostat, does anyone here know who carries Robert Shaw 180 thermostat? I'm in Colorado Springs, CO. Or does Robert-Shaw go by another name now?
/Andy
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