Heater Core Valve Pic Request

[Kansan]

Picture request. When I purchased my 73 340 Cuda automatic, the heater core had been bypassed and the heater core valve was a box of spare parts. The part looks new but I have no idea how to install/hook up without a service manual. Is anyone willing to post a couple of detailed pictures of it installed in an air conditions car? I believe it would be the same for all A/C e-bodies, maybe?

Thanks,

Jerry

 

[Ronbo73]

Picture request. When I purchased my 73 340 Cuda automatic, the heater core had been bypassed and the heater core valve was a box of spare parts. The part looks new but I have no idea how to install/hook up without a service manual. Is anyone willing to post a couple of detailed pictures of it installed in an air conditions car? I believe it would be the same for all A/C e-bodies, maybe?

Thanks,

Jerry

Hello Kansan, Are you talking about the diverter/mixing valve mounted on the passenger side inner fender? There are two different types. One is all metal and the other is bakelite (spelling?) I have the bakelite type. My control cable comes out of the firewall below the brake booster and up across the firewall. Other control cables, from what I have seen, come out below the heater core. My car is a factory A/C car. The hose on the right side of the valve is 1/2" and the left side is 5/8". The hoses on the backside of the valve are both 5/8" on my valve. I hope this helps.

 

[Lunchbox]

From the 70 Service manual for a 340.

 

[Kansan]

Hello Kansan, Are you talking about the diverter/mixing valve mounted on the passenger side inner fender? There are two different types. One is all metal and the other is bakelite (spelling?) I have the bakelite type. My control cable comes out of the firewall below the brake booster and up across the firewall. Other control cables, from what I have seen, come out below the heater core. My car is a factory A/C car. The hose on the right side of the valve is 1/2" and the left side is 5/8". The hoses on the backside of the valve are both 5/8" on my valve. I hope this helps.

Yes, thank you. The one i have it metal and is "new" so I'm sure it is aftermarket. I have only found the metal valves online,

Kansan

 

[Kansan]

From the 70 Service manual for a 340.

View attachment 143561

Thank you. My configuration is more like the illustration on the left as the heater core is more centered rather than offset to the right like some.

Kansan

 

[Vaanth]

Picture request. When I purchased my 73 340 Cuda automatic, the heater core had been bypassed and the heater core valve was a box of spare parts. The part looks new but I have no idea how to install/hook up without a service manual. Is anyone willing to post a couple of detailed pictures of it installed in an air conditions car? I believe it would be the same for all A/C e-bodies, maybe?

Thanks,

Jerry

The metal and bakelite body heater valve with removable bracket was used on air-conditioning E-bodies from 1970 through mid 1973. As a running change during the 1973 model year, the valve was replaced by an all metal body valve with a non-removable bracket. The following image shows the change notice from the 1973 Service Highlights:

The following image shows the older valve compared to a newer style valve. Note that the newer valve has a different bracket for a later model B-body.

It appears the replacement valve manufacturers have combined some applications and the bracket mounting may not be as original to align with the original inner fender mounting holes and contours. The original metal valve starting in 1973 had the proper bracket. Following are images of an original valve, Chrysler part number 3502723:

If yours does not have the proper mounting bracket, look for an original 3502723 valve, or an early replacement valve from possibly Everco, Murray, or Four Seasons, which should have the proper bracket.

Following is the routing drawing from the 1973 Service manual, but it shows the earlier valve. The 1974 manual shows the same; Chrysler did not update the drawing.

On the valve, the forward 1/2" tube fitting connects to the 1/2" hose from the intake manifold. The forward 5/8" tube fitting connects to the 5/8" hose from the water pump. The rearward tube fittings connect to the heater core. Order is not critical, but generally the lower hose goes to the passenger side tube and the upper hose goes to the driver side tube.

I don't have a 1973 or 1974 E-body to take a picture (I only have two 1970 non-AC E-bodies), but following is a borrowed image of a valve in a 1973 E-body. Apparently the owner has a heater core issue, because the core is bypassed:

Although the mounting bracket and fender attachment differs, the following image shows a similar metal valve in my 1977 Fury (B-body):

 

[Kansan]

This is the valve that came with the car, just not installed. Right style for and April 04, 1973 build date? I think so...

 

[MOPARMITCH]

I sold a **** load of those metal ones, way back when I owned Auto Parts Stores.......They will work sufficiently....

 

[Kansan]

They will work sufficiently....

Good to know. Thank you,

Kansan

 

[Kansan]

way back when I owned Auto Parts Stores

I hope it was a Mom & Pop store...My little town of 1100 back in Kansas had all kinds of business back in the 70's, but they started dying out in the early '80s, Couple of hardware stores, a lumber yard, Chevrolet dealership, a Green Light Auto Parts, couple of banks, couple of drugstores (with soda fountains), an OTASCO, movie theater, TV sales and repair, etc....all they have now is a Casey's, Dollar General, small family grocery store and a liquor store.

There was a small town about 15 miles away that had a Chrysler, Plymouth, Dodge dealership. Lots of cool cars around town in the '80s. I'd love to see what's socked away in those old detached garages today...

Kansan

 

[MOPARMITCH]

I hope it was a Mom & Pop store...My little town of 1100 back in Kansas had all kinds of business back in the 70's, but they started dying out in the early '80s, Couple of hardware stores, a lumber yard, Chevrolet dealership, a Green Light Auto Parts, couple of banks, couple of drugstores (with soda fountains), an OTASCO, movie theater, TV sales and repair, etc....all they have now is a Casey's, Dollar General, small family grocery store and a liquor store.

There was a small town about 15 miles away that had a Chrysler, Plymouth, Dodge dealership. Lots of cool cars around town in the '80s. I'd love to see what's socked away in those old detached garages today...

Kansan

Yes, Independent Auto Parts Stores. 30yr long story, but I started in 1975 as a Delivery Boy. Came up through the ranks, and bought 1 store from the older (than me) owners. Went on to open 2 more. Sold out 3 stores to Carquest in 2000 when price cutting started. Very happy I'm out, but I still retain ALL of the commercial real estate 25 years later, and they still lease from me......

 

[Kansan]

Well, with some help and guidance from some fine folks here I have a working heater system. Did several vacuum checks on the heater core, installed the mixer control that come with the car and put a in a new thermostat. Probably need to shorten the water line going to the intake, but that's easy stuff when I'm bored, Just running water for now, but went out for about a 8 mile run to get it warmed up and the heater definitely works now and no leaks. Next up is the washer squirter nozzles.....