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Can anyone tell me what the purpose of this heater hose connection is on the manifold?
I initially thought it was a bleeder, but it actually will shut off the coolant if you turn the screw all the way in. It's kind of in the way of the carb I wanted to use, so if I can substitute a different connection it would work out better.
Can anyone tell me what the purpose of this heater hose connection is on the manifold?
I initially thought it was a bleeder, but it actually will shut off the coolant if you turn the screw all the way in. It's kind of in the way of the carb I wanted to use, so if I can substitute a different connection it would work out better.
The shut off valve in the heater hose return pipe is Mickey Mouse, wrong, wrong, wrong!
There are two types of fresh air heaters for these trucks, economy and deluxe.
The deluxe heater has two cables located on a bracket under the dash to the right of the steering column.
The temperature (**** marked TEMP) cable routes to the heater water valve that's spliced into the inlet to heater core heater hose, located on the right fender apron.
The economy heater has a manually operated shut off valve in the same location.
Whatever type of valve this truck had rusted out, began to leak, so Rube Goldberg Mickey Moused the connector to act as a shut off valve.
The cable controlled heater water valve (C3UZ-18495-A / Motorcraft YG-133) is available from Ford, the manual shut-off valve (C5TZ-18495-A) is obsolete, available NOS
The connector is also obsolete, can be found NOS or at auto parts stores.
First off, you will want a spacer between the carb and manifold. That will give the clearance you need.
Second, it is turned a little too far. The nipple should be pointing between the thermostat housing and oil fill tube, as shown in the other pictures. Correcting that will give you a little more room to work with.
If you are in a warm climate where a heater is not really needed, then you can simply plug it.
If you will need the heater, then you can use a lower profile 90 degree nipple but you will need to add a valve somewhere so you can turn it off when it is warmer.
First off, you will want a spacer between the carb and manifold. That will give the clearance you need.
Second, it is turned a little too far. The nipple should be pointing between the thermostat housing and oil fill tube, as shown in the other pictures. Correcting that will give you a little more room to work with.
If you are in a warm climate where a heater is not really needed, then you can simply plug it.
If you will need the heater, then you can use a lower profile 90 degree nipple but you will need to add a valve somewhere so you can turn it off when it is warmer.
Well, I do have a spacer of sorts. I have the older style manifold with a smaller bolt pattern, so I have an adapter plate. It gives about an extra 1/2". As for the position, I see that the others are slightly rotated, now that you drew my attention to it. The old 2 barrel intake of mine, had it pointed directly to the side, but turning it will help. I think I'll have enough clearance to make it work. I turned it in a bit further, which gave a lower profile. I'm not sure I can use this valve as a shut off, because as you see, it is missing the "handle". Does anyone have idea if it can be purchased anywhere? I'll figure out something for the shut off, if I decide to use some other fitting. I think I'll want to keep heater operational, at least for now.
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