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Look what I found in the glove box of my 55 F-350 when I got it in April. I just now am posting this for all of you to read. It is an official Ford Engineering Staff bulletin telling Ford garages how the heater hoses should be put if they installed a recirculating heater in a 54 to 56 Ford truck that just came from the factory. It is page 2 of 3. I imagine other pages would show how to install the Fresh Air heater. It has three diagrams one for all 6 cylinder engines, one for all EBV, EBW, and EBZ 8 cylinder engines and one for all EAL and EAM 8 cylinder (big truck) engines.
I have had my hoses running incorrectly all these years. And my 55 truck was wrong too. The key is that the hose to the heater runs on top of the intake manifold and under or behind the coil to the firewall and then to the heater. I have a picture of the full document and 3 closeup scans for you to copy and save.
Hi Abe. I don't suppose that you have anything that shows how the firewall mounted valve is plumbed into a heater? The only way way that I can imagine it done is to have the supply from the water pump attach to the valve and then the hose out at the other valve port has to make a "U"-turn to attach to the heater water inlet. My motor's a 215 six.
Some usual, but not always easy to discern, rules are:
Cooled radiator water is found at its bottom. The upper heater hose should always be the return and considered the same as the bottom hose of the radiator. The lower heater hose should always be the hot supply, typically found anywhere before the thermostat. The reason for the hot at the bottom heater connection is to ensure the entire heater core is full of hot water. As the hot water makes its way to the top it pushes any air in the core up and out, allowing the heater to be completely full of hot water.
Hi Abe. I don't suppose that you have anything that shows how the firewall mounted valve is plumbed into a heater? The only way way that I can imagine it done is to have the supply from the water pump attach to the valve and then the hose out at the other valve port has to make a "U"-turn to attach to the heater water inlet. My motor's a 215 six.
The only info I have on paper is what I posted. I bet it is on page 1 or 2!
I have seen pictures of trucks with the fresh air heater and there is a short hose that makes a U-turn. Look at people's galleries for pics under the hood and you may see it. Maybe later tonight I can post one if I have one on my desk top.
John, here are some pics I have of the fresh air heater hook up. Some are 6's and some are 8 cylinders, but I think the hook up at the firewall is the same.
Good stuff. I would think the V8 routing behind the coil would have it rubbing the throttle linkage... just ran out to the garage. I don't see room for it there. I guess you could route it under the coil right next to the coil bracket.....
Good stuff. I would think the V8 routing behind the coil would have it rubbing the throttle linkage... just ran out to the garage. I don't see room for it there. I guess you could route it under the coil right next to the coil bracket.....
It should fit under the coil.
Last night I ran out to see if my in hose went to the bottom port like Beav stated.
Good stuff. I would think the V8 routing behind the coil would have it rubbing the throttle linkage... just ran out to the garage. I don't see room for it there. I guess you could route it under the coil right next to the coil bracket.....
I believe it runs under the coil. Before I can have mine do that I have to turn my valve on the block so it faces to the rear.
Last night I ran out to the garage to see if my hot hose went to the bottom port like Beav said. And it does.
My father pounded into me "bottom to top & top to bottom" for hose's. Hard to believe
how many new cars and trucks he installed heaters in. After the war, the average Joe
could only afford a new basic & cheapest they could afford. At this time a mouth
watering 33 or 34 any make was about 15-20 bucks. And then the end of the 1950's
(I was a Plymouth freak) mainly 33 PD's. How about this, I got for free in 1959. First
after research now with computors, there is no record- no nothing on this now $$$$$$ maybe one off from a local body co. And it had only 8500 miles origional all
weather good year tires. Can't control my dreaming but still got nightmares haunting
me as of now. Ya know I still can even smell it..ugg uggg
car, which again got lost in time.
