203* T stat?
Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
I look at it this way... it's IH's engine, and it was designed for the 203* TS.
Also, I'd look into the billet TS Housing too, a little pricy, but leaps and bounds better than the stamped steel POS that comes stock on it.
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Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
I have it and love it. Warms up a tad quicker in the winter, much warmer air in the winter, and I recorded my best-ever mileage with it. (Not saying you WILL get better mileage, just an observation.)
I look at it this way... it's IH's engine, and it was designed for the 203* TS.
Also, I'd look into the billet TS Housing too, a little pricy, but leaps and bounds better than the stamped steel POS that comes stock on it.
I look at it this way... it's IH's engine, and it was designed for the 203* TS.
Also, I'd look into the billet TS Housing too, a little pricy, but leaps and bounds better than the stamped steel POS that comes stock on it.
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
I think it has the most to do with where you live. Tom live in a cold place, as do most of the people who have seen improvements. People who live in mild climates dont seem to show improvements as often.
Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
I have it. No change in MPG but does warm up faster and gets hot even in the winter. 10 degrees outside and after 20 minutes I'm sweating and have to turn the temp **** down. It does cause the oil temps to run a little warmer though, especially on tuned trucks.
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Tuned
Joined: Oct 2011
Posts: 282
Likes: 0
I bought one to put in but decided against it.
I posted a thread about it so take a look. It is just my observations and other have had good success with it.
https://www.ford-trucks.com/forums/1...nd-answer.html
I posted a thread about it so take a look. It is just my observations and other have had good success with it.
https://www.ford-trucks.com/forums/1...nd-answer.html
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Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
I think the 203* stat in the 4700 DT444E trucks is necessary. They have a completely different radiator and the engine has quite a bit of 'elbow room' in the engine compartment. The water pumps are different as well (spin on filter). I am pretty sure the recovery time is quite rapid so having a stat that opens a bit later will help keep the oil temp in the proper range....especially in colder climates. We have a lot of these trucks in our fleet and their cabs aren't very cozy on cold days, even with the heat on full blast.
The Super Duty trucks have the 7.3 packaged quite a bit differently than IH does. Under hood temps are 15-20 degrees warmer compared to the IH 4700 (when measuring various components with an IR gun). I presume that Ford went with the lower stat in efforts to help keep the oil temps from getting too high, but I am only guessing.
Folks in cold climates might benefit from having the 203 stat...especially if their EBV has been deleted. (again...I am just guessing...)
Let us know what you think if you decide to try one out.
The Super Duty trucks have the 7.3 packaged quite a bit differently than IH does. Under hood temps are 15-20 degrees warmer compared to the IH 4700 (when measuring various components with an IR gun). I presume that Ford went with the lower stat in efforts to help keep the oil temps from getting too high, but I am only guessing.
Folks in cold climates might benefit from having the 203 stat...especially if their EBV has been deleted. (again...I am just guessing...)
Let us know what you think if you decide to try one out.
Lead Driver
Joined: Feb 2000
Posts: 5,373
Likes: 46
From: Palm Bay, Florida
I am a firm believer in what Bob at Dieselsite says here, I have the 203* TStat, billet housing AND his fantastic coolant filter setup-which btw has been mistaken for factory installed!!
http://www.dieselsite.com/dieselsite203thermostat.aspx
http://www.dieselsite.com/dieselsite203thermostat.aspx
Tuned
Joined: Oct 2011
Posts: 282
Likes: 0
Since Mark was a transmission coolant engineer for Ford I believe, I wonder what he has to say about the 203 thermostat. Does anybody know if he has commented on it before? I am not sure if his knowledge relates to the engine cooling also but I know he has commented on engine cooling in other aspects.
I would love to know his opinion on this. Hey Mark...
I would love to know his opinion on this. Hey Mark...
