Heater Hoses

[SFBay‘72Duster]

So I would like to flush out my heater core and replace the hoses. I’m going through my entire cooling system.
I just want to confirm that the line to the heater core from the top of the intake manifold is the inlet, and the line from the water pump is the outlet. Thank u!

 

[Oldmanmopar]

yes

 

[jbc426]

So I would like to flush out my heater core and replace the hoses. I’m going through my entire cooling system.
I just want to confirm that the line to the heater core from the top of the intake manifold is the inlet, and the line from the water pump is the outlet. Thank u!

I found this for the 5.9's & 5.2's, and used it today to hook-up the Vintage Air heater valve on a resto-mod I'm doing for a buddy. I'm sure a similar search will result in a similar diagram for whatever motor your doing.

 

[CRUZE 418]

Just curious, is there a wrong way to hook it up? I would think that the heater core doesn't care which way the water goes through.

 

[missing linc]

Just curious, is there a wrong way to hook it up? I would think that the heater core doesn't care which way the water goes through.

The idea is to reverse flush it to get as much crap as possible removed.

 

[CRUZE 418]

I know that, the OP mentioned getting the hoses on correctly. Is there a wrong way?

 

[str12-340]

On my Darts the hoses are different sizes (diameter)...

 

[missing linc]

On my Darts the hoses are different sizes (diameter)...

Yes, up to 73 I think it was, one was 1/2 inch and the other 5/8, they were both 5/8 after the change.

 

[missing linc]

I know that, the OP mentioned getting the hoses on correctly. Is there a wrong way?

I don't think it makes much difference.

 

[Cuda-do]

yes

 

[Cuda-do]

Just curious, is there a wrong way to hook it up? I would think that the heater core doesn't care which way the water goes through.

usually 2 different hose sizes

 

[jbc426]

I know that, the OP mentioned getting the hoses on correctly. Is there a wrong way?

I thought having the shut of valve at the entrance to the heater core would stop hot water from unnecessarily heating the cabin, but figure the water will heat through ether way. More slowly if it's shut off at the entrance, but eventually the heater core will have hot water in it given enough time.

 

[CRUZE 418]

It sheds the heat through the diverter.

 

[jbc426]

It sheds the heat through the diverter.

Is that what the shut-off valve is called?

 

[CRUZE 418]

There is no valve. Airflow diverter. Air into car or air out. There is always water flowing through the heater core. Yes, sometimes people in warm climates remove them. It's just a small radiator. Wonder if their cars ever run warmer after doing that.