180 degree T-stat

[Matt]

Okay, so I'm curious what exactly this does. The stock one is 195... so what will 180 do... I'm sure I could Google this, but future members may have the same question so we may as well get it in a thread.

Break it down for me Joe! :p

[Matt]

http://bwoodyperformance.com/product_info.php?cPath=32&products_id=338&osCsid=lnhhugfexuqkuxnz

I guess my question is, why wouldn't it come with one from the factory? Any downside?

[Robert Palmer]

I could have sworn that the stock T-Stat was 215. Anyways, the 180 helps but at least in my experience, not in city driving because we can't adjust the fans. The 5.7 WK fans are hydraulic, not electric.

Once I get on the highway the temp drops to around the 1/4 mark.

Hemijon also has a Tstat.

[hemi.jon]

colder motor = happy motor...nuff said..alot of good things dont come factory for different reasons, the tstat, could not be there just because they found a happy middle for northern and southern vehicles so they could keep less parts on the assembly line. but it could be for other reasons, but the thing is the manufacturers dont do alot of good things, just for some dumb reasons.

[HEMIBeast]

Cooler operating temperature. Helps the car run a little cooler. Some say it helps prevent detonation.

[Matt]

I could have sworn that the stock T-Stat was 215. Anyways, the 180 helps but at least in my experience, not in city driving because we can't adjust the fans. The 5.7 WK fans are hydraulic, not electric.

Once I get on the highway the temp drops to around the 1/4 mark.

Hemijon also has a Tstat.

colder motor = happy motor...nuff said..alot of good things dont come factory for different reasons, the tstat, could not be there just because they found a happy middle for northern and southern vehicles so they could keep less parts on the assembly line. but it could be for other reasons, but the thing is the manufacturers dont do alot of good things, just for some dumb reasons.

Cooler operating temperature. Helps the car run a little cooler. Some say it helps prevent detonation.

Okay, so bear with me as I try to understand this... the t-stat is basically device to tell the motor to stay cooler (@ 180) rather that the factory (195 or whatever it is). Kind of like a homes AC controller; it will cool to whatever you set it at...? So this would be like setting the temperature to coll to lower for the motor...?

My temp is usually right at the half way point, but that could be because I'm in Florida and it's 115 in the shade and 100% humidity, lol.

Yeah Jon, I figured it was a mass manufacturing thing... seems it always is.

[HEMIBeast]

That's basically it. You can purchase the t stat in a 160 or 180. The 180 is obviously more popular though. If you live in a cold climate and run a 160 it takes forever for your car to warm up, etc..

[Matt]

That's basically it. You can purchase the t stat in a 160 or 180. The 180 is obviously more popular though. If you live in a cold climate and run a 160 it takes forever for your car to warm up, etc..

Hmmm, what would you recommend for me (in Florida)? I turn on my Jeep and the temp gauge starts at 1/2... and sits there.

[hemi.jon]

Hmmm, what would you recommend for me (in Florida)? I turn on my Jeep and the temp gauge starts at 1/2... and sits there.


im in the SWFL area, and i run a 180. no matter how much i seem to be running around or sitting in traffic i never see my jeep above 180

[Matt]

im in the SWFL area, and i run a 180. no matter how much i seem to be running around or sitting in traffic i never see my jeep above 180

Okay, sounds good Jon! By the way, how do you know what temp your Jeep is at?

Thanks for all the help guys!!

[hemi.jon]

used to run a dashhawk for a while. it let me know..and now just watching the temp gauge its always in the same spot as when the DH said it was 180. i think the highest i ever saw was about 185

[Matt]

used to run a dashhawk for a while. it let me know..and now just watching the temp gauge its always in the same spot as when the DH said it was 180. i think the highest i ever saw was about 185

Could you guess what the 1/4, 1/2, 3/4 marks are... roughly?

[HEMIBeast]

Hmmm, what would you recommend for me (in Florida)? I turn on my Jeep and the temp gauge starts at 1/2... and sits there.


Definitely a 180 bro.

[Matt]

Definitely a 180 bro.

Cool, that's what I'll go with. :thumbsup:

[hemi.jon]

Could you guess what the 1/4, 1/2, 3/4 marks are... roughly?

ill have to look at it tomorrow. i dont feel like goin outside to see my gauges to remember what it looks like..lol

[Matt]

ill have to look at it tomorrow. i dont feel like goin outside to see my gauges to remember what it looks like..lol

haha, no rush whatsoever man... thanks!

[Robert Palmer]

Quarter mark is 185ish, half way is about 215-220.

[Matt]

Quarter mark is 185ish, half way is about 215-220.

Holy shit... yup, I'm definitely getting this.

Where is this thing located under the hood? I assume a pretty cake install/swap?

[HEMIBeast]

Depending on the t stat you go with you will have to sand it down so it fits your gasket or it will leak.

[Matt]

Depending on the t stat you go with you will have to sand it down so it fits your gasket or it will leak.

I was just going to go with the one from the Bwoody site that I linked a few posts up... is that a good choice?

[Robert Palmer]

The Jet 180 fits just like OEM.

[Matt]

The Jet 180 fits just like OEM.

w00t, thanks!!

[Megatron]

Is this recommended for a big 3.7 also? LOL.....

[Matt]

I would say it all depends on how hot your engine gets when you drive. If it gets hot, then yes. If not, then probably not. Also, since you're up north, it may be a good seasonal thing to do.

[Robert Palmer]

Is this recommended for a big 3.7 also? LOL.....

I dont think Jet makes a 180 for you guys.

[Robert Palmer]

Oh and I am leaving my shit in. I am not switching it.

[Megatron]

I would say it all depends on how hot your engine gets when you drive. If it gets hot, then yes. If not, then probably not. Also, since you're up north, it may be a good seasonal thing to do.

I dont think Jet makes a 180 for you guys.

Ok, thank you.:thumbsup:

[Matt]

Oh and I am leaving my shit in. I am not switching it.

That's probably a good thing given the way you work that pedal on the right :D

[AcidCold]

I have a 180 on my 4.7 and love it! pulls chevys out of mud without getting to hot like before the change.

[Matt]

I have a 180 on my 4.7 and love it! pulls chevys out of mud without getting to hot like before the change.

:D

[FlyinRyan]

It's a good idea on a Hemi. they are very sensitive to knock (the knock sensors wouldn't be put in place in the factory wasn't nervous about breaking ringlands)

on a 4.7 or 3.7, don't bother unless you live in EXTREME heat (south Florida, Arizona, SoCal, etc) or are running some sort of tuning software. Any one of you that are running SCT, B&G, DSP, Superchips....you need one ASAP.

the thermostats can also be modified for lower temps by drilling the housing of the stat.

[Matt]

It's a good idea on a Hemi. they are very sensitive to knock (the knock sensors wouldn't be put in place in the factory wasn't nervous about breaking ringlands)

on a 4.7 or 3.7, don't bother unless you live in EXTREME heat (south Florida, Arizona, SoCal, etc) or are running some sort of tuning software. Any one of you that are running SCT, B&G, DSP, Superchips....you need one ASAP.

the thermostats can also be modified for lower temps by drilling the housing of the stat.

So what about a HEMI in south Florida, haha

Thanks for the reassurance Ryan, I appreciate it!!

[FlyinRyan]

So what about a HEMI in south Florida, haha

Thanks for the reassurance Ryan, I appreciate it!!

Get one. the Hemi has a more aggressive tune from the factory than the 3.7 or the 4.7, and because of the thin piston ringlands, there is very little tolerance for detonation. You will likely not see a difference in performance overall but you may see the PCM leave more timing because of the cooler temps.

[Matt]

Get one. the Hemi has a more aggressive tune from the factory than the 3.7 or the 4.7, and because of the thin piston ringlands, there is very little tolerance for detonation. You will likely not see a difference in performance overall but you may see the PCM leave more timing because of the cooler temps.

Awesome info! Thanks Ryan!!

[blackpepper]

Don't install it when the engine is hot.. unless you want hot coolant scolding you.

[Matt]

Don't install it when the engine is hot.. unless you want hot coolant scolding you.

ah, good tip, thanks Ryan.

Speaking of installing... where is this thing located?

[blackpepper]

Behind the intake.. you have to remove your intake and the radiator hose goes to the engine block on the left side in the front. Where it connects to the engine there are two bolts and they need to be removed and the tstat is in there.

[blackpepper]

http://www.jeepgarage.org/showthread.php?t=1122&highlight=thermostat

Install directions in this thread:
http://www.jeepgarage.org/showthread.php?t=1122&highlight=thermostat

[hemi.jon]

heres a photo i had from something else, does it help?

http://img25.imageshack.us/img25/9691/l589b32f22cf79e892ad2ab.jpg

***oops black pepper beat me to it

[blackpepper]

+ rep for the effort ;)

[Matt]

Behind the intake.. you have to remove your intake and the radiator hose goes to the engine block on the left side in the front. Where it connects to the engine there are two bolts and they need to be removed and the tstat is in there.

http://www.jeepgarage.org/showthread.php?t=1122&highlight=thermostat

Install directions in this thread:
http://www.jeepgarage.org/showthread.php?t=1122&highlight=thermostat

heres a photo i had from something else, does it help?

http://img25.imageshack.us/img25/9691/l589b32f22cf79e892ad2ab.jpg

***oops black pepper beat me to it

+ rep for the effort ;)

Damn, thanks a lot fellows!!! + Rep all around!!

[jaredmwatson]

Ok first off i have 2006 kj 3.7L...is there a 180tstat that fits that engine? If so i live in sw North Carolina would that make sense to swap out...the winters arent bad or long here...any help would be great

[Scottina06]

Jet(jetchip.com) doesnt make one for the 3.7 engines. There could be another manufacturer that does, You could try your local autoparts store.....

[jaredmwatson]

awsome thank you for the help im in with some local auto places so i will do some searching and see post what i come up with

[Scottina06]

sounds good....

[FlyinRyan]

Jet(jetchip.com) doesnt make one for the 3.7 or 4.7 engines. There could be another manufacturer that does, You could try your local autoparts store.....

Yes they do, I have one.

[AcidCold]

Ok first off i have 2006 kj 3.7L...is there a 180tstat that fits that engine? If so i live in sw North Carolina would that make sense to swap out...the winters arent bad or long here...any help would be great

Pull your stock stat out and see what size (in Milimeters it is) My 4.7 was 54mm, compare it to one of desired degree and your done.

[Scottina06]

Yes they do, I have one.


just going by their webpage....hook us up witht he part # please

[FlyinRyan]

http://airram.com/product.php?categoryid=909&productid=1232

[Scottina06]

#10177 for the 2000-2006 4.7 V8.

I will be looking into this WK 4.7 guys. Some of the parts for 2000-2004 4.7 V8's dont always workk for the 05-06...so we'll see.

[Scottina06]

if anyone wants these.....I can get them for $39 shipped....LOL

[Matt]

if anyone wants these.....I can get them for $39 shipped....LOL

http://airram.com/product.php?categoryid=909&productid=1233

:p

[Scottina06]

Hey....a dollar is a dollar....LOL

[Matt]

Hey....a dollar is a dollar....LOL

haha, this is true.

[Scottina06]

and a dollar towards another mod...LOL

[Matt]

and a dollar towards another mod...LOL

haha, it's more enticing when you put it that way.

[dreamer1213]

I just ordered Jet 180 for the WJ's H.O...will be here on Wednesday...and will be installed over the weekend..

You Hemi guys have it easy...thermostat sitting close to the top and easy access...WJ's 4.7's, don't know about the WK's...probably the same...is on the right side at the bottom...draining all the coolant is pretty much a must...

[Scottina06]

update- OReillys auto parts has the Jet180's for the 4.7 for $29.........

[Chris]

Have we found one anywhere for the 3.7 yet?

[Scottina06]

I searched the Jet website...let me try again

[Scottina06]

Jet has nothing that I can find...but that doesnt mean there isnt one

[FlyinRyan]

I just ordered Jet 180 for the WJ's H.O...will be here on Wednesday...and will be installed over the weekend..

You Hemi guys have it easy...thermostat sitting close to the top and easy access...WJ's 4.7's, don't know about the WK's...probably the same...is on the right side at the bottom...draining all the coolant is pretty much a must...

Hannes, just drain the rad. No need to drain the block. It'll be approximately 2 gallons. If the coolant is relatively new you can even re-use the coolant too.

[blackpepper]

Shit I couldn't find time to get the tstat in tonight I was hella busy until 10pm.. I might just see if the shop is willing to do it manana.

[FlyinRyan]

Shit I couldn't find time to get the tstat in tonight I was hella busy until 10pm.. I might just see if the shop is willing to do it manana.

I wouldn't worry about it too much. I wouldn't beat on it too too much until you get that 180 in though

[blackpepper]

Werd.

[mjl2610]

I never got around to puttin' in the 180* but i was thinking about the general operating aspects of it. How can the system possibly maintain the 180* temps when i cant control the electric fans to come on at 180. Sure i have the belt driven fan, but does that pull enough air across to keep the motor running at a more constant temp? If so then this might be worth it for my 4.7 that idles in traffic a lot, temp gauge over 1/2, in the Chicago summers during that time of year of course.

[TimmyB]

I just flew thru these threads, but doesnt the T-stat pop open at a specific temp and then allow the coolant to flow thru the radiator and heater core, and has nothing to do with operating temp. Meaning the radiator and cooling fans maintane the engine temp. I remember my T-stat in my other GC went on me in winter, and I couldnt get heat at all because the one I had in had the safety feature where it gets stuck open if it failed, so the coolant was allowed to flow throughout the entire system, where as if it got stuck close my car would overheat because the coolant would not be flowing thru the radiator, only the engine block.

Maybe im wrong, but I could only see changing out to a different temp T-stat is related to where you live. For me the stock seems fine, I get heat within 5-10 min in winters, and my engine temp always stays right below the halfway mark on the gauge.

On a side note im kinda pissed my WK doesnt have an oil pressure gauge on the dash like my 94 Limited GC did.

[mjl2610]

I just flew thru these threads, but doesnt the T-stat pop open at a specific temp and then allow the coolant to flow thru the radiator and heater core, and has nothing to do with operating temp. Meaning the radiator and cooling fans maintane the engine temp. I remember my T-stat in my other GC went on me in winter, and I couldnt get heat at all because the one I had in had the safety feature where it gets stuck open if it failed, so the coolant was allowed to flow throughout the entire system, where as if it got stuck close my car would overheat because the coolant would not be flowing thru the radiator, only the engine block.

Maybe im wrong, but I could only see changing out to a different temp T-stat is related to where you live. For me the stock seems fine, I get heat within 5-10 min in winters, and my engine temp always stays right below the halfway mark on the gauge.

On a side note im kinda pissed my WK doesnt have an oil pressure gauge on the dash like my 94 Limited GC did.

Well yeah i mean the normal operating temperature is (195* from chrysler/thermostat). It will open and coolant will flow through and the aux cooling will kick in to maintain the temp.

You can consider a Jeep's normal operating temp 180* if they have a 180* therm in that case.

But in my situation of hot ideling traffic at times, i need to find a way to set in the computer to start up the cooling fans at 180* or rig up a switch to turn on the high speed cooling fans. (Back in the days of my oldsmobile intrigue and the 3800 series II GM motor fun, the forums i read, people who raced with their grand prix's rigged a high speed fan switch so they could turn the fans on and off whenever they wanted.) Cause while yes the 180* thermostat will let the coolant flow at 180, but the engine temp will still gradually rise to 195 or 210 whatever it is before the aux. fans to kick in to bring down the temperature.

The coolant temp is probably monitored by some sensor that gives the computer the reading. If the temp says something lower than 195 or 210* (factory) why would the fans turn on at all, or maintain the 180 in that case just because you have a 180 in there?

[TimmyB]

In my Jegs catalog they have switches for the cooling fan, has different temps settings it turns on at and has a defeat switch so you can turn it on manually.

[FlyinRyan]

In my Jegs catalog they have switches for the cooling fan, has different temps settings it turns on at and has a defeat switch so you can turn it on manually.

Link?

[mjl2610]

I'm thinking that it cant be too hard to rig some kinda switch with the relay or wires that controls the high speed or low speed aux. fan on our jeeps eh?

[dreamer1213]

Depends on what kinda fan you have....if you have an electric fan that yes....a switch is possible...when I went to the track with Harrison he had a switched wired to his SRT8's fan to where he could let the fans run while the Jeep was off...

If you have a mechanical or clutch fan...then there is no way to "override" it...my WJ and the HEMI WK's, not sure bout the 4.7 WK's are hydraulically cooled...the powersteering system's pressure controls the fan....don't think you could hook a switch up to it, since the powersteering pump has to be running for it to be able to get pressure to the fan..

[FlyinRyan]

Depends on what kinda fan you have....if you have an electric fan that yes....a switch is possible...when I went to the track with Harrison he had a switched wired to his SRT8's fan to where he could let the fans run while the Jeep was off...

If you have a mechanical or clutch fan...then there is no way to "override" it...my WJ and the HEMI WK's, not sure bout the 4.7 WK's are hydraulically cooled...the powersteering system's pressure controls the fan....don't think you could hook a switch up to it, since the powersteering pump has to be running for it to be able to get pressure to the fan..

I had an idea. what about using a smaller PS pulley so the pump builds more pressure? Thus spinning the fan at a higher speed.

[mjl2610]

Well my 4.7 has a clutch, belt driven fan. But it also has an aux. fan with a high and low speed setting. Yer saying that my aux fan could not be electric preventing me from installing a switch? It probably is a crazy hydro fan or whatever preventing a simple solution such as this.

[dreamer1213]

Thats an idea...you should sooo try it Ryan!! ;)

[dreamer1213]

Isn't that aux fan to just cool the AC's radiator...I've never looked inside a WK's engine bay...so I'm not sure....how bout you take a pic if you can please...that way I'll be able to better tell...where does this fan sit? Right in front of the clutch fan, or to the side?

On my dad's Hemi Ram, he has a secondary fan that only cools the AC's radiator...and it's only on when the AC is on...

[mjl2610]

I had an idea. what about using a smaller PS pulley so the pump builds more pressure? Thus spinning the fan at a higher speed.
Well yeah i mean i guess but the problem still lies in letting the computer turn it on at 195 or 210* versus you flipping a switch.

I had been thinking that our Jeeps have to have relays to turn the fans on and off. So i did some searching and came on this saturn forum at this link, ( http://www.saturnfans.com/forums/showthread.php?t=23668&page=3 ) post 44, where a guy posts up a drawn schematic of a switch that will turn the relay on and or off thus activating his cooling fans. Possibilities here?

[mjl2610]

Isn't that aux fan to just cool the AC's radiator...I've never looked inside a WK's engine bay...so I'm not sure....how bout you take a pic if you can please...that way I'll be able to better tell...where does this fan sit? Right in front of the clutch fan, or to the side?

On my dad's Hemi Ram, he has a secondary fan that only cools the AC's radiator...and it's only on when the AC is on...

The fan turns on with the a/c. This fan has also turned on low speed as well as high speed during really hot days idling in my driveway without the a/c on also to provide more cooling. I can take some snaps.

[mjl2610]

Pics 2006 4.7L WK cooling system (fans)

1. belt driven clutch fan location
http://i577.photobucket.com/albums/ss215/mjl2610/Picture147Large.jpg

http://i577.photobucket.com/albums/ss215/mjl2610/Picture148Large.jpg

2. Pics from under the jeep looking up into the engine bay of auxiliary cooling fan.
http://i577.photobucket.com/albums/ss215/mjl2610/Picture152Large.jpg

http://i577.photobucket.com/albums/ss215/mjl2610/Picture154Large.jpg



Hope this helps Hannes

[FlyinRyan]

Well yeah i mean i guess but the problem still lies in letting the computer turn it on at 195 or 210* versus you flipping a switch.

I had been thinking that our Jeeps have to have relays to turn the fans on and off. So i did some searching and came on this saturn forum at this link, ( http://www.saturnfans.com/forums/showthread.php?t=23668&page=3 ) post 44, where a guy posts up a drawn schematic of a switch that will turn the relay on and or off thus activating his cooling fans. Possibilities here?

I can't vouch for the WK's setup, but on the WJ, because the hydro fan is running off of fluid being driven by the PS pump. Because of this, regardless of engine temp, the fan is always spinning at a low speed. On the stock PCM calibration, it will go into the high speed setting at 220* F.

The high speed setting can be manipulated through PCM programming. You could also bump up the idle to spin the pump slightly faster....but it'd be more effective to somehow get a smaller pulley for the PS.

[scjeep4.7HO]

That will also change your pumps pressure which may negatively accfect your steering.

[dreamer1213]

That definately helps Mike...thanks for the pix...I don't see why you wouldn't be able to run a toggle switch or something to that fan...looks electric to me...

[mjl2610]

Yeah i mean i want to look into it some more i might have some time this weekend. However, i don't see why a simple switch that completes a circuit to the relay wouldn't just force on any cooling fan regardless of its basis of operation.

As stock, the signal comes from the pcm and says hey fan turn on, and the relay gets that impulse and clicks on. The diagram, by faking that signal, should work for any setup in theory. Even for those who have the hydraulic system.

[FlyinRyan]

That will also change your pumps pressure which may negatively accfect your steering.

That's the idea, to change the pumps pressure so the fan will spin faster.

it'd be not much different than turning while on the gas.

[dreamer1213]

If I remember correctly....I don't think my fan has any kinda wires running to it...just high pressure pipes...I might be wrong...I haven't looked at it for a while...

[mjl2610]

After reading this thread again, half of the people on this site have these software tuners for their jeeps. For people that have the 180 therms and a tune, why dont you just adjust the fan control to 180 degrees? Seems pretty logical, then you all keep the motor at 180 degrees. Just thinking out loud here.

[blackpepper]

The 5.7 doesn't have an electric fan.. we have the hydralic fan and I believe that setting is not offered in the tuner (diablo) for that r3ason.

[Frankie]

Just bought a JET 180 for 33.71 shipped from Amazon! Thanks Scott!!! :thumbsup:

[06HemiLtd]

I bought a Jet 180* thermostat more than a month ago. I live in NW Ohio and the average high temperature during the winter months is around 30*. My Jeep starts to blow warm air within 2-3 minutes of running now. How long should I expect it to take if I install the 180* thermostat.

[024.7HO]

true but what about the motor never reaching closed loop and always trying to find it by dumping more and more fuel in.

colder motor = happy motor...nuff said..alot of good things dont come factory for different reasons, the tstat, could not be there just because they found a happy middle for northern and southern vehicles so they could keep less parts on the assembly line. but it could be for other reasons, but the thing is the manufacturers dont do alot of good things, just for some dumb reasons.

[Scottina06]

true but what about the motor never reaching closed loop and always trying to find it by dumping more and more fuel in.


that wouldnt happen with just a 180 stat....maybe with a 170 or 160 if your not tuned for it

[05quadratrac]

I have a K&N intake, Magnaflow muffler, planning to get a superchip this spring, do you guys think a 180 t-stat would be a good mod along with these? I plan to do a few track runs during the summer too but its also my daily driver and I live in PA which has cold winters. Oh and how hard is it to swap on WK 4.7's?

[FlyinRyan]

I have a K&N intake, Magnaflow muffler, planning to get a superchip this spring, do you guys think a 180 t-stat would be a good mod along with these? I plan to do a few track runs during the summer too but its also my daily driver and I live in PA which has cold winters. Oh and how hard is it to swap on WK 4.7's?

Get the 180 t-stat. They are set up now so that they take no longer to warm up to temp than a stock stat. I am from NJ and had no issues with the 180 in the wintertime.

The stat on the WK will be in the same place as the WJ...it was not the funnest install I've done. Doable, but it takes finesse.