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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 06-08-2011, 02:50 PM
zanegriffin zanegriffin is offline
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Default 180 t-stat

What are the benifits of a 180 degree t stat and how much do they cost
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Old 06-08-2011, 04:09 PM
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I have done some research on exactly this question and this is my understanding....a 180 degree thermostat allows your engine to run cooler than the stock 195 degree stat because it opens and allows coolant to flow and cool your engine 15 degrees sooner. The cooler engine is supposed to be able to produce more power due to having cooler charge air, less risk of detonation, less heat soak, etc. A lot of peeps have said that causing your engine to constantly run cooler than it is designed and tuned to can cause problems, such as your PCM thinking your vehicle is not reaching the proper operating temperature. On the other hand, I have read from several peeps on here that they installed one and have had no issues other than noticing that it ran a little cooler. I'm sure someone will chime in with some hands-on info for us.
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Old 06-08-2011, 04:17 PM
zanegriffin zanegriffin is offline
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Yes alot of ppl on here are always talking about changing there t stat so i was wondering what it was all about and i live in texas so a cooler running engine is a must
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Old 06-08-2011, 05:22 PM
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I'm a little bit skeptical about the whole extra power thing. Ehhh, maybe it adds a little but I would have to think it would be very little. But it should certainly make it run a little cooler which is what you are looking for. I forgot to mention in my first post...I don't think it is the only one out there but most people seem to prefer the one made by JET. It seems to be top of the line and runs about $35 from Summit or Jegs. If I was going to replace it I would go with the good stuff. The thermostat is not a part to be going cheap on, lol.
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Old 06-08-2011, 05:24 PM
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I have mine and it doesn't really help with power. It does a ton for heat soak and helps the motor last longer. I raced my truck the other night in 90 degree humid air and it never got above 186....No codes or any issues. 12 bucks at autozone!
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Old 06-08-2011, 05:56 PM
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From what ive read on billistheoilguy.com not getting your engines temp up to 212 will hurt you engine due to your oil not being hot enough to lube properly
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Old 06-08-2011, 06:03 PM
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I have one...so do a ton of other people.....
Chefred112 has had one for years on his 200,000 mile stock block drag raced daily driver. See what he says about the 180 T-stat...the oil thing doesn't add up for me!
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Old 06-08-2011, 06:10 PM
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maybe its something completly diffrent idk
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Old 06-09-2011, 05:11 PM
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I ran a 160 in my ford(carb), and a 180 in my s10, without issues, other than a cooler engine. If you go too low of a temp with fuel injection the computer will think the engine is still warming up in open loop mode(all preset data, fuel maps, etc....), once the car is at proper operating temperature it enters closed loop(takes readings from sensors, better fuel management). So, if you lower the temperature too much it will not reach closed loop, and will negatively effect performance/mpg. 180 is usually ok, however, with my s10 I did lose mpg in winter(which meant that it was too much of a decrease), so I bought another 195 stock thermostat, and drilled two 1/8" holes in it, to reach an in between temp....sort of...not really lol. This allows it to "leak" so your heater may technically not get hot as fast, but it also prevents overheating due to a sticking thermostat... Also, from thermodynamics, Energy = work + heat, so if you reduce heat output, you increase work output....not considering MANY other variables lol. The optimum thing would be to reduce the operating temperature as much as possible, but still be above that limit where you won't enter closed loop.
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Old 06-12-2011, 03:06 PM
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Agreed. It's BAD to have your oil too hot. Thats why they make engine oil coolers.
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