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Should I get a 180 thermostat?

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Old 03-28-2012, 10:37 AM
Ellis42 Ellis42 is offline
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Default Should I get a 180 thermostat?

I asked this question on the thermostat poll and never got an answer so here it is. Some people say the Jet 180 thermostat is good and others say its not because the lower temps not good on motor which sound stupid but I'm also not a motor wizard. So my question is would it be a good idea to put a jet 180 thermostat on my truck? It has cold air intake/ram air (homemade) and flowmaster super 40. In future ill be adding superchip and Hughes plenum repair kit. Also what are the advantages of the Jet 180 thermostat?
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Old 03-28-2012, 11:55 AM
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What motor are we talking about?
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Old 03-28-2012, 12:09 PM
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Quote:
Originally Posted by MoparPaul View Post
What motor are we talking about?

It's the 5.9
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Old 03-28-2012, 12:26 PM
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Yeah I am mixed on this too, I doubt that the answer you receive will be little more than theory. In the end, it will be up to you. I think I am going to make the plunge, when I do my upcoming coolant flush and see how it feels to me.
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Old 03-28-2012, 02:01 PM
Dudemanbrother Dudemanbrother is offline
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The problems not really with the motor, its with the computer. When it sees that the tstat is opening 15 degrees cooler than it designed for it thinks it needs to change the timing to compensate, which in some cases means more fuel is added. Usually people report around a 1mpg improvement and a cooler running engine.
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Old 03-28-2012, 03:30 PM
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If more fuel is added, then an MPG loss would result, no?
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Old 03-28-2012, 04:45 PM
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Correct. In those cases then you'd lose some mpg. But most people say its not an issue.
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Old 03-28-2012, 05:02 PM
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The difference that you will notice is that your truck will keep that fresh, first-drive of the morning type of power longer as opposed to that middle of the afternoon stuck in traffic for a while power. There is definitely a difference...it's just not an increase in your base HP.

With a 180 tstat, you will most likely never see a code (170 is a different story). If you lived in a cold climate, it might be an issue. If you don't have a programmer (e.g. diablo predator) it won't make much of a difference. You need to lower the temperature that your fans activate in order to take advantage of this.
On a down note: In order to flash impurities out of your oil, the engine needs to reach a decently high temperature (~200*) every once in a while, so while the consistent power can be nice, you need that occasional heat to keep your engine in tip top shape.
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Old 03-28-2012, 09:51 PM
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I'm still not sure which way to go considering still so many back and forth pros and cons to it.....
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Old 03-28-2012, 10:02 PM
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Hey the only con is the 10 minutes it takes to change it out....try it and see if you like it...course I live in FL where it warm year round...Nebraska on the other hand gets a little chilly in the winter. Try it this summer w/ the 5.9 and let us know.
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Old 03-29-2012, 07:05 AM
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Hot climate(80*+ all the time), go for it. Med-cold climate(anything below 80* regularly) don't do it, no reason for it.

Truck is tuned to run at its best in the factory temp range. If you tow regularly and live in hot climate, then it would be worth it.
Short duration trips would be a bad mix for a colder t-stat because you would never burn off internal engine moisture.

There's no real benefit other than when towing or in stop-go traffic in hot climates. Changine the t-stat by itself wouldnt have much of an impact anyways. You would want to go to a hotter plug gap if doing so which I have YET to see anyone do on here... Your engine runs at a spcific temp which it's tuned for. Dropping the runing temp makes the plugs act as if you had slightly smaller gap(reduces performance) so in theory ou could open up the gaps slightly and gain some performance without worrying about spark plug blow-out or running lean. Talking about a small gap increase like .005-.01"

*I wanted to add...blow-out is a condition of losing spark at the plug at high rpms from too large of a gap. For those that have not heard that term before, I has nothing to do with the plug breaking...lol
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Old 03-29-2012, 08:28 AM
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Ya that's the down side I been thinking about is when winter comes around it's freezing outside then I have that new thermostat on there, not sure how well that will go....
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Old 03-29-2012, 09:03 AM
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Quote:
Originally Posted by dirtydog View Post
Hot climate(80*+ all the time), go for it. Med-cold climate(anything below 80* regularly) don't do it, no reason for it.

Truck is tuned to run at its best in the factory temp range. If you tow regularly and live in hot climate, then it would be worth it.
Short duration trips would be a bad mix for a colder t-stat because you would never burn off internal engine moisture.

There's no real benefit other than when towing or in stop-go traffic in hot climates. Changine the t-stat by itself wouldnt have much of an impact anyways. You would want to go to a hotter plug gap if doing so which I have YET to see anyone do on here... Your engine runs at a spcific temp which it's tuned for. Dropping the runing temp makes the plugs act as if you had slightly smaller gap(reduces performance) so in theory ou could open up the gaps slightly and gain some performance without worrying about spark plug blow-out or running lean. Talking about a small gap increase like .005-.01"

*I wanted to add...blow-out is a condition of losing spark at the plug at high rpms from too large of a gap. For those that have not heard that term before, I has nothing to do with the plug breaking...lol

Thanks you gave me the answer/explanation I was looking for, I have decided not to go with it because I hardly tow and we have bad winters here
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Old 03-29-2012, 09:19 AM
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Yeah, I'd agree with 'dog. Hot climates and/or heavy towing it's a good mod. If you tend to do shorter trips it's a poor mod since you'll be increasing your chances of oil sludge and condensation problems.

Another instance it's beneficial is if you have some mods that tend to lean out the A/F ratio, as a cooler t-stat will richen the mix a tad...
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Old 03-29-2012, 11:13 AM
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Ya I decided against it due to I don't think it will benefit me and the colder temps. here. Does anyone have any recommendations on other MODS for the engine that are low cost?
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Old 03-29-2012, 12:04 PM
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Tuner and efan will both help some are are fairly low cost. You could also ditch the chambered muffler for one with some decent flow...
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Old 03-29-2012, 12:18 PM
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Hmmm. I have a jet waiting for install. I live in PA so I see just about all temps. My commute to work is a good 45 to an hour every day with traffic. I do some short trips as well. I figured with my vararam intake the slightly richer mix from the stat would help. So should I throw it in or not? I'm also running a SC tuner with a free flowing exhaust ( magnaflow y pipe and a custom cat back).
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Old 03-29-2012, 01:08 PM
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Stupid question...but what are the benefits of an efan and what's a good efan to buy?


I am superchip my truck after I buy the plenum repair kit from Hughes
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Old 03-29-2012, 01:24 PM
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Quote:
Originally Posted by Ellis42 View Post
Stupid question...but what are the benefits of an efan and what's a good efan to buy?


I am superchip my truck after I buy the plenum repair kit from Hughes
An efan takes the drag of the factory clutch fan off the engine. Less drag on the engine = more power and better fuel mileage. They also move more air than the stock fan so engine will be cooler. I bought a flex a lite 183 which is a direct bolt on for a Hemi. Got it for 250 shipped from amazon.
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Old 03-29-2012, 01:24 PM
 
 
 
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