39-40 hot water heater

[mrfliboy]

Originally Posted by Terry,OH

Follow the instructions that came with the heater.

Is the original readable? Would love to get a copy of this. Same as the one in my truck. Too cool.

[JSeery]

Originally Posted by JM 35 Sedan

JSeery, when viewing those smaller pictures, click on them and hold the click in place until a drop down window appears. Then click on "open in new window" that enlarges the picture and even allows greated enlagment of that picture so you can see whatever you need to see.

Tried opening on my phone and it enlarges better on my phone! Still looks like the same connection setup to me.

[JM 35 Sedan]

Originally Posted by JSeery

Yep, that is one method I have used. I normally save a photo to my desktop and enlarge them from there. This image does not enlarge that well for me to be sure of how the connections are made, are you able to enlarge it enough to tell of sure?

But it does look (to me) that the lower heater core hose goes to the head and the upper heater core hose goes to the lower radiator hose.

Yes, I opened in new window, downloaded that into my tablet files, and when viewing that I can see everything very plain and clear on that picture. If I wanted to, I could then copy that using my computer printer. Easy Peezy

[37 Coupe]

On my 1939 Ford hot water heater but in my 1937 Ford I hooked up according to original instructions.Upper outlet which would be on passenger side returns to radiator hose. Lower outlet which is on or toward drivers side goes across front of carburetor to heater valve top of passenger side head. I think all of this is in 1939 book or an article Tom Cherry did years ago in V8 Times. Drake sells the proper heater hose clamps.

[30-9]

I kinda agree with jseery. I think it should work either way, but it's not.

My valve is open, I had the heater out last year and flushed it out. So cold up here temp gauge never hits 160 in winter months. I get (At best) luke warm air, nothing that will warm cabin.

I'm open to suggestions.

[ford38v8]

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Originally Posted by 37 Coupe

On my 1939 Ford hot water heater but in my 1937 Ford I hooked up according to original instructions.Upper outlet which would be on passenger side returns to radiator hose. Lower outlet which is on or toward drivers side goes across front of carburetor to heater valve top of passenger side head. I think all of this is in 1939 book or an article Tom Cherry did years ago in V8 Times. Drake sells the proper heater hose clamps.

This is correct, and in addition, trapped air must be purged before connecting the return hose to the pump hose nipple.

As an aside, Tom Cherry Jr was an avid V8er and one of the nicest guys in the hobby. His son Tom III continued with the heaters for a while but was more of a muscle car guy.

[30-9]

Thx but I would think trapped air would work its way out eventually

[JSeery]

Originally Posted by 30-9

Thx but I would think trapped air would work its way out eventually

What thermostat are you using that doesn't allow the temp to get to 160? For starters I would want at least a 180 degree thermostat and if you are having problems keeping the temperature up block off part of the radiator with some cardboard. Running the engine below 160 is not good on the engine in addition to not producing hot air. The engine will not lubricate well at low temperatures and you end up with increased wear. In addition the oil will not get hot enough to burn of the impurities and you will end up with a lot of sludge build up. Need to get the operating temperature up!

[blucar]

Originally Posted by 30-9

I kinda agree with jseery. I think it should work either way, but it's not.

My valve is open, I had the heater out last year and flushed it out. So cold up here temp gauge never hits 160 in winter months. I get (At best) luke warm air, nothing that will warm cabin.

I'm open to suggestions.

For a heater to work in the winter months the engine should have a 180 thermostat.
Many people have the bad habit of thinking that a 160 degree is better for their engine..
I can clearly recall the automotive class I attended in 1952 that covered automotive cooling systems. The class stressed the importance of 180 degree's being the optimum temp for an engine. At 180 the majority of the contaminates formed in the oil during the combustion process, would be burned/cooked out of the oil, thereby extending engine life.
The automotive standard is now 195... I know several people that insist on running 160 thermostats in their late model engines, then they wonder why the engine runs poorly.
I recently installed a '97 Chevy 5.7 Vortec engine and 4L60 AT in my '64 C10 pickup.
We used the stock ECM (computer) that was reprogrammed for my application. The mechanic assisting me with the installation wanted to use a 160 stat, I insisted on a 195 because that is what the "book" called for..

[30-9]

Js I don't know what thermostats I have in there, bought car and never opened it up.

As always you provided me very good advise and I will try it

[JSeery]

Originally Posted by 30-9

Js I don't know what thermostats I have in there, bought car and never opened it up.

As always you provided me very good advise and I will try it

For now you can just block off part of the radiator to get the temperature up. It is a trial and error process to find the correct amount to block off.

[JSeery]

Originally Posted by blucar

For a heater to work in the winter months the engine should have a 180 thermostat.
Many people have the bad habit of thinking that a 160 degree is better for their engine..
I can clearly recall the automotive class I attended in 1952 that covered automotive cooling systems. The class stressed the importance of 180 degree's being the optimum temp for an engine. At 180 the majority of the contaminates formed in the oil during the combustion process, would be burned/cooked out of the oil, thereby extending engine life.
The automotive standard is now 195... I know several people that insist on running 160 thermostats in their late model engines, then they wonder why the engine runs poorly.
I recently installed a '97 Chevy 5.7 Vortec engine and 4L60 AT in my '64 C10 pickup.
We used the stock ECM (computer) that was reprogrammed for my application. The mechanic assisting me with the installation wanted to use a 160 stat, I insisted on a 195 because that is what the "book" called for..

So true, there are a lot of flathead folks that believe in the low temperature approach. The hotter an engine runs the better (within reason and other constraints). Engine efficiency is dependent (along with other factors) on engine temperature.

[Kube]

Originally Posted by 30-9

Thx but I would think trapped air would work its way out eventually

Not necessarily.

[30-9]

Can I purchase the 180'thermo at Napa? Anyone have part number?

[V8 Bob]

Originally Posted by JM 35 Sedan

...............
Now, on the other hand, some folks here post pictures sooooo damn LARGE that they will not fit on the screen of my tablet, and are an even worse fit on my Droid (largest sceen available) smart phone. Sometimes these attached pictures are so large that I have to download them, and then downsize them, to be able view them properly. Not gonna mention any names here

Sorry 'bout that. They appear pretty normal sized on my desk top screen. BUT, at least you can see the detail VERY well. ....

[Kube]

Once the engine is up to operating temperature check the temperature of each heater hose at about 3" from the firewall. They should be very close in temperature. If not, I'd be looking at getting the core flushed professionally.

[Kube]

Originally Posted by 30-9

Can I purchase the 180'thermo at Napa? Anyone have part number?

Yes, but they will not fit properly and may very well "ride up" in to the radiator hoses w/o modifying.

[30-9]

Thanks Kube will look online - carpenters/c&g/drake

[JSeery]

Originally Posted by 30-9

Can I purchase the 180'thermo at Napa? Anyone have part number?

Henry has a method of using newer style thermostats with some small wires to retain them. I have not tried that method. He has posted on it several times.

http://fordbarn.com/forum/showthread...rmostat&page=2

Post #28 has a photo of what he does.

[30-9]

American inginuity Pretty cool

Back to needing Napa part number