I'm interested....

What about me?

Screw the engine wear thread, too many variables and opinions to make headway anyways.

 

Sticker on my engine says 250hp im pretty sure they didnt botch the sticker.

 

That is correct, they increased the horsepower in 2001MY, which I clearly stated in post #31, so I'm pretty sure they didn't botch the sticker either.

My 2000 sticker says 235.

On edit: I take that back. Apparently they did botch the sticker, at least according to dieselmann's site:


"In 1997 the horsepower was increased to 225 and the torque was increased to 480 ft/lbs.
Early 99 valve cover stickers were incorrect showing 250 HP. The engine was actually rated at 235 HP with all accessories installed.
The engines did develop 250 HP and 505 ft/lbs torque for automatic transmission and 275 HP and 520 ft/lbs torque for manual transmission in October 2000.
Engines with automatic transmissions were increased to 525 ft/lbs torque after January 02."
PowerStroke Horsepower and Torque

 

I take it back as well they did botch the sticker LOL

 

https://www.ford-trucks.com/forums/9...e-concept.html

For anyone interested in me blowing more hot air.

 

I'm running a 203* thermostat.
My housing was getting rusty and needed changing so I did them at the same time.
My research at that time showed that the 203* put the engine into a more ideal operating temp and did not at all effect the longevity. Sources included IH, multiple engine builders, multple Ford diesel mechanics and other diesel mechanics. So I went with it.
I do not have any hard data to prove one way or the other.
I did not know any Ford engineers at the time, but I will inquire now as this subject has got me to thinking.
The answer to the question as to why OEM uses a 195* Tstat was an emphatic emmisions only issue.
I always thought it was silly to burn more fuel to emit less pollution, read short term at the tail pipe.
BTW-I get 21.8 MPG and that's with worn tires. The new ones added about an inch in height so we'll see if we can break the 22 mark this summer.
Show me hard data and I'll switch it out.

 

Anybody contacted Bob at Dieselsite to let him know about this descussion?
I'd be curious as to HIS take now some years after he sold the 203s to lots of us.

 

...Done......

 

To start: A thermostat regulates MINIMUM operating temperatures. A Radiator regulates MAXIMUM operating temperatures.

If you have to rely on reserve, God help you if the hill is too long. That's like saying we need to rely on the battery reserve to keep our lights on.


A thermostat regulates MINIMUM operating temperatures. A Radiator regulates MAXIMUM operating temperatures. An F550 runs the SAME temperature pulling his 36’ tow hauler with a 192 and a 203. However, when the same truck is empty, he willl run hotter with the 203 than the 192, IOWs, he will run closer to his loaded temperatures.

A thermostat regulates MINIMUM operating temperatures. A Radiator regulates MAXIMUM operating temperatures.

It’s really that simple. There have got to be 3 million 444E/PSDs running around this country with 203 thermostats in them, whether from the factory, or from Dieselsite. There’s nothing to be scared of, nothing to be confused about, and posts about the thermostat causing overheating are downright false.



And all those International trucks that do WAAAAY more real work than most all of us.



How did it not perform? One of my best selling products. I get one to two calls a year having an issue with it not closing. I send them a new one and never hear back. There are tens of thousand of our 203 thermostats out there. I run it in all of my 7.3s and have for longer than anyone on these boards, since I ran it in my own truck for testing before I started selling them. Has anyone heard of any of these terrible theoretical conclusions becoming a reality? I certainly haven't, or I wouldn't be selling it. If I had a problem with any item, it wouldn't be on my site.


Already been done. 444E and OBS trucks. Now show us analysis that using a 203*F stat WILL shorten the engine's life expectancy.

Here's the engineer's paper concerning and applied to this exact engine. This is not theory. He used the 203 thermostat for the research: https://www.dieselsite.com/pdffiles/...nginetemps.pdf

And for those that think they have to take the thermostat out before the weather warms up.
A thermostat regulates MINIMUM operating temperatures. A Radiator regulates MAXIMUM operating temperatures.

Does that make sense to anyone? Dig your thermostat out of the garbage and call the manufacturer if you have any questions. Dieselsite has always sold proven items.

Recent article in 8-Lug Mag. https://www.dieselsite.com/pdffiles/...0dec098lug.pdf

Here's a link to one of my best selling products year after year after year.... https://www.dieselsite.com/index.asp...ROD&ProdID=186


I feel so bad when people get confused reading these boards. They are on here looking for help, and so many don't know what to believe or not to believe. I try to put as much information on my website as I can. You can always look there for information on my products. You can also be sure that I would not sell something that would hurt your truck. I still have and always will have my 1st Powerstroke and know first hand how much your truck means to you.


Bob

 

Thank You Bob

 

Thanks Bob! I'm putting your t-stat in after my next oil change. My plan is to have 3 UOA's on the factory t-stat and 3 on your t-stat. The factory one is on its way out and doesn't close completely (engine never gets up to full temp even in the 50's).

 

Yes, Thanks Bob!! I for one have faith in you and your product!! also wanted to say that the great coolant filter setup you sold me has been mistaken for a factory install its so nice!

 

Thanks Bob! I've always maintained exactly what you said. Tstat only controls how fast the engine warms up not how hot it gets. I've run the 203 in both my PSD's and you know how hard I work mine. just a little truck and 5th wheel.

Barney

 

***************crickets********************

 

On average a full closed t-stat, "after it has opened" is 15*F (average).

203* is about 188*
192/195* is about 177*/180*

Closing temp is as important as opening temp.
A t-stat is a throttle valve for the coolant.

Bill