1973 CJ5 308 V8 Heater help needed

[dabbrowne]

Hello

The previous owner did not install the heater core. The heater box and motor is installed but since there is no pipes coming through the firewall I am assuming there is no core. Please see the pictures below.
I could really use some help on:

1)Where do the heater core hoses and drain come through the firewall?
2)Where do the two hoses attach to the motor?
3)Any way to get a cheap core? the new one cost $90.


Thank you

 

[Tinman22]

The feed and return should come through the firewall just to the right of the battery box as seen in your picture not sure about the drain as I don't have one. The lowest cost core I've ever found was about 50.00 From rock auto. As for where they hook up on the motor I believe it's pass side water pump and pass side intake manifold behind the carb.But I'm not positive. As I'm not an amc v-8 guy but most of the diagrams show them there

 

[thiswontbetooexpensive]

Correct me if I'm wrong, but isn't that 2" open ended hose the drain? I can see that in the picture and it was installed on my 1980 CJ5 . Or was there another small 1/2" hose? I think that those knockouts come out to get the hoses through as well.


This won't be too expensive Dear! That's what I keep saying. Over and over again.

 

[Tinman22]

Yes the drain for the cowell in front of your windshield. That's where your fresh air intake is ..I thought you ment a heatercore drain sorry.

 

[Tinman22]

Your firewall is different than mine my cowell drain is up high yours looks to be down very low . The heater core pipes actually stick out through the firewall .

 

[Tinman22]

Looking at your pic it looks like the firewall has been overlayed with a piece of sheetmetal. my drain is where that little silver box ( regulator?) is on your firewall

 

[GatorBate]

Mine is an 83 so I don't know if this will help, but you can see where my hoses come through the firewall just to the right bottom of the battery rack.

 

[Tinman22]

And the heatercore comes through those two holes that are close together and kind of at an angle to each other

 

[Tinman22]

You can see the drain in gator bates pic that is where mine is.

 

[mtnwhlr]

You should have two drains. The big one up high in the pic and there is a small one below the heater core. At least thats on the newer models Not sure on a early 70s model.

 

[Tinman22]

Well I went back out to the barn and wouldn't ya know it there is another drain but mine is further to the left under the battery it also a later wrangler tub.

 

[dabbrowne]

Thank you Tinman22

Please see the photo below. There is a hose that just goes from the water pump to the back of the motor. Is this the one that should be routed in to the heater core?

Thank you
DAB

 

[dabbrowne]

Hello Gator

Thank you for the photo. What is the small hose against the fire wall with a white cap?

Also do you have a heater drain hose?

Thx
DAB

 

[Golden CJ]

Maybe this can help you:
From the front you have two hoses; one to the manifold and one to the fire wall. The other in the fire wall to the end of the manifold.

image from jeepforums

 

[johnnyreb]

you can see the two heater hose knock outs in your first pic to the right of the battery.

 

[GatorBate]

Hello Gator

Thank you for the photo. What is the small hose against the fire wall with a white cap?

Also do you have a heater drain hose?

Thx
DAB

That is a breather for the Transmission and/or the Transfer Case . I don't remember a heater drain. It would be under the battery. I will try to look today and get a picture. it's kinda chilly around here and I'm seldom around when the sun is shining (for what that's worth, no warmth in sun shine. -48 near where I was working Monday.)

 

[GatorBate]

Hi dabbrowne

I crawled under the jeep last night and looked around. There is a drain about 3 or 4 inches below the Heater fan motor. I assume it is for the heater box.

 

[mtnwhlr]

I crawled under the jeep last night and looked around. There is a drain about 3 or 4 inches below the Heater fan motor. I assume it is for the heater box.

That would be correct