Thermostat question

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Yeah that's probably not enough room for a stock shroud. That's pretty tight.
 
Can you provide the part number and brand of the pusher fan? I can kinda see part of it in your avatar pix.) There are a lot of cheap junk fans out there that cannot flow any real useful amount of air through the restriction of a 3 row rad. Their flow ratings are for free flow, and their airflow drops like a rock when you put them up to a rad surface.

Since you are not cooling well a low speeds and stopped, you have an air or coolant flow issue. Are you using a stock water pump?

And did you report what width Champion that you have? I don't see if it is a 22" or 26". But that is not the likely problem if the overheating is just at idle.
 
And did you report what width Champion that you have? I don't see if it is a 22" or 26". But that is not the likely problem if the overheating is just at idle.

He said it was a 22" earlier in the thread. But yeah, if it stays cool when it's moving that's probably not the issue.
 
I put a Milodon 180 high flow thermostat in it and it still does the same thing...
 
You can keep changing thermostats till your broke, but that ain't gonna fix you issue. You have a coolant or air flow problem at idle or low speed.
 
It has also been noted on other threads online that the champion radiator caps hold way to much pressure and are junk. Have you replaced the radiator cap?
 
62 responses in this thread and your still screwing around with a thermostat? Myself, as well as several others have already told you the issue early on. Not enough AIRFLOW at idle. And a lower psi cap isnt going to do anything but let it puke water sooner.
 
62 responses in this thread and your still screwing around with a thermostat? Myself, as well as several others have already told you the issue early on. Not enough AIRFLOW at idle. And a lower psi cap isnt going to do anything but let it puke water sooner.
I'm going to take off the pusher and make it a puller with out the fan blade.
 
I'm going to take off the pusher and make it a puller with out the fan blade.

I seriously doubt that's going to work for you. The electric fan in question already isn't enough to cool the car at low speed while in combination with the mechanical fan. And as a puller even an electric fan needs a shroud.

Nothing wrong with going to an electric fan, there are plenty out there that will do the job. But none of the ones I can think of that will work as a standalone will fit in a 2" space either.

You'd be far better off losing the electric fan and adding a proper shroud for the mechanical fan.
 
Just curious, what are the diameters of the water pump pulley and the crank pulley?
 
I'm going to take off the pusher and make it a puller with out the fan blade.
Since it is there, it wojn't hurt to try. But I don't expect success. The model number on your fan was requested, not just that it is 'high volume from Summit' . The best I can make of that is that it is one of those very poor electric fans, the flow of which will drop into the toilet when it is in front of or behind the flow restriction of a radiator. You have to accept that there are good electric fans and that there are crap electric fans. Even if one says it flows 5000 cfm, then it will probably drop like a rock, down 1500 cfm when pressure drop of a rad is put in front of or behind it.

It is all in the blade and shroud design. Look at threads for the Ford Contour fan on this forum or look at this very good Mitsubishi production cooling fan; you will see much fatter blade designs, which will keep flowing at a good rate even with the pressure drop of a radiator, and a shroud that makes air flow through the whole radiator. Your fan setup pulls only through a part of the radiator and effective has reduced the radiator size to about 1/2 of it's full size when you are stopped.... assuming the fan used will push/pull worth a hoot anyway.

DSCN1801.JPG
 
I took the fan blade off and left the pusher fan on,,,yep still heats up.....I can't see a number on the fan so I'm not sure what I have.
It ha curved blades and 12 of them. I feel the air when it's on.
 
I spent some time on the CVF website, if the CVF serpentine pulleys are the same size as their V belt pulleys, they're a 10% under drive compared to stock pulleys. Did you measure the serpentine pulley diameters?

The combination of no shroud and a 10% under drive on the water pump could be causing all of your grief.
 
OK, well at least you know. Being able to feel the air is meaningless; none of us can tell how much air is flowing from just what hits our hands, and the amount of airflow is the problem.

I thought you posted a pix of the rad and fan on front but did nto see it today... am I just imagining that? LOL I HAVE been working some long hours.

Have you put any more thought into a mechanical fan and shroud? Or is the pulley setup just too much of a problem?
 
Since it is there, it wojn't hurt to try. But I don't expect success. The model number on your fan was requested, not just that it is 'high volume from Summit' . The best I can make of that is that it is one of those very poor electric fans, the flow of which will drop into the toilet when it is in front of or behind the flow restriction of a radiator. You have to accept that there are good electric fans and that there are crap electric fans. Even if one says it flows 5000 cfm, then it will probably drop like a rock, down 1500 cfm when pressure drop of a rad is put in front of or behind it.

It is all in the blade and shroud design. Look at threads for the Ford Contour fan on this forum or look at this very good Mitsubishi production cooling fan; you will see much fatter blade designs, which will keep flowing at a good rate even with the pressure drop of a radiator, and a shroud that makes air flow through the whole radiator. Your fan setup pulls only through a part of the radiator and effective has reduced the radiator size to about 1/2 of it's full size when you are stopped.... assuming the fan used will push/pull worth a hoot anyway.

View attachment 1714952516
The fan is a preform fan from summit.
 
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