What I thought would be a 45 minutes project turned into a two hour ordeal.
Drained coolant
Removed air box
Took rad hose off
Took CAC tube off
Took nuts loose for the EBP bracket.....easy enough
Took the outer stud off, no problem there
Now for the inner stud.......yeah, the runs directly BELOW that fuel line. Ok, not the end of the world, loosen the fuel line bracket on the head, and cracked the nut on the upper bowl. Still no room for a socket so back and forth with the 13mm wrench, problem was it would come up so far and just run tight. I was afraid I would gall something or strip something up.....and who wants to try to tap or worse yet replace that housing. So back and forth, soak with pen. oil, from top and then from bottom with the little red tube bent at a 90 to get up the hole. Sure glad they didn't make that a blind hole. Finally after some time got it out.

What a difference 15* makes though. For one thing the heater works awesome now, but she just seems peppier, that I did notice.
I also dropped a degree and maybe two on my delta, although I suppose this might be due to the new tstat having a smaller swing? At any rate, delta now runs around 7 or 8, not 9 or 10.
Good to have that done.

 

Glad you got it in. Goes lots easier the second, third,etc time

 

You're not the first Mishimoto user to have noticed a better temp difference after install.

Josh

 

Yeah that bracket on the '03s is a HUGE PITA. On the later years after it was moved you can actually pull the t-stat housing without removing anything but the two bolts and the radiator hose clamp.

It's awesome how much better the heater is isn't it? I used to run it at full red all the time in the winter, now I almost never use it full over to heat because it's so much better. Like "always-cold pregnant wife complains of being hot" better, instead of riding under three blankets with a beanie on.

 

I've noticed I don't need the heat on full red here right now either, that might change below 0 but it's warm enough above that to stay toasty warm.
My only concern is the hot weather and how warm this thing will run. It would run over 200 until the colder weather hit and logic would tell me it should still regulate without that being a point of worry but I will keep my eye on it when summer rolls around.

I really don't want to have to take that thing out to go with a cooler tstat.....that bracket is a PITA, no room for a socket with that darn fuel line right there on mine.

 

Tons of folks have run that Mishimoto in the summer with no issues. It's an incredible thermostat, well, as far as thermostats go....

Mishimoto Ford 6.0L Powerstroke High-Temperature Thermostat MMTS-F2D-03H

 

Agree! I would also add that stat pictured on your link won't fit a 6.0 without some mods.

 

Hah! They gave me the wrong pic! I never noticed that!! Thanks for the find!

It's all fixed now. Dang web people...lol.

 

When you get the Mishimoto unit in your hands, you appreciate just how different of a unit it is. Pretty way cool.

 

Just the precision in which it regulates is pretty amazing. Although in my truck this spring in traffic I didn't like how high my temps got I was glad when I put it back in this fall. Maybe with the new waterpump it might not get as high and I can keep it in

 

My problem was a slowly cracking radiator causing my truck to get too hot even unloaded. Your new and improved waterpump should help, but keep and eye on that radiator.

 

Will be nice. I was actually suprised how well the radiator looked. Was very clean all except I small dirt dobber nest. I keep looking for tank seperation and very shocked I haven't broken the return nipple yet as much as I've laid all over the dern thing lol.

 

Ha! So I am not the only one who is extra careful with that plastic return nipple

I use an old really really thick bed comforter that the Mrs. let me have. It's behind the back seat for cold weather in case the kid gets stranded somewhere, but doubles as an awesome thing to lay on. I swear I could fall asleep perched over the engine it's so thick, and the best part is it keeps me from busting that return.
The removable shroud piece, well that is another story.........

 

WOW Mike, that just makes me feel bad. 2 hours? Yikes. I won't mention it took me 15 minutes to change mine last night. Two bolts and a hose clamp. But then it is an 06 so less stuff in the way. B.

 

Haha. Mine's an 06 and yep takes me about 15min to change the tstat--it's the water pump that took me a bit longer