1975 gran fury heater core removal?

[DB GRAN FURY]

Hi, i am new here, i am from Canada and i own my 1975 gran fury from about 13 years now, my heater core starts leaking inside the car, i just by-passed the hoses from the outside but now i want to fix that, i have searching and found nothing so close to mine (without a/c), seems to be a big job... do i have to remove the heater box from the car to access it?

 

[Lycidias]

I've done this recently to my '73 NYB. It was far more easy than i thougt (A/C car). Be aware, that the heater box is made from Asbest! I used a mask while working on it.

- I removed the glove compartmend and the heating lines from the box to the vents.
From under the dash and this opening i could loose all srews that hold the inner part of the heater box.

- Then i removed the heater box by pulling it down into the footwell carefully. After that i could take out my leaking heater core (and let the AC Core in place).
- I put the brand new heater core in (fitted 99% perfectly) with new sealings from Detroit Muscle Tech. (Thanks to @CBODY67; @ayilar and/or @Boydsdodge for the recommendation!).
- Put also new sealings on the heater box itself.
- Put everything in place again an reconnected the hoses. Works!

Here is my post with pictures of the sealings Hello from germany / 440 New Yorker

Here one of the old and new heater core: Hello from germany / 440 New Yorker

Greetings Manuel

 

[Big_John]

Be aware, that the heater box is made from Asbest!

Assuming that means asbestos... The heater box is not made from asbestos. From what I've read, it's a RIM (reactive injection molding) plastic with fiber reinforcing.

Not good for you to breathe any dust, but no where near as bad as asbestos.

 

[Lycidias]

Ok. I took my informations from this post:
Replace heater core

In this case I would be careful and think on myself

 

[Big_John]

In this case I would be careful and think on myself

That is always the best way.

What's really bad in some heater boxes are mouse nests and their droppings. You don't want to inhale any of that. If I have a heater box apart, I vacuum it out first.

 

[DB GRAN FURY]

I've done this recently to my '73 NYB. It was far more easy than i thougt (A/C car). Be aware, that the heater box is made from Asbest! I used a mask while working on it.

- I removed the glove compartmend and the heating lines from the box to the vents.
From under the dash and this opening i could loose all srews that hold the inner part of the heater box.

- Then i removed the heater box by pulling it down into the footwell carefully. After that i could take out my leaking heater core (and let the AC Core in place).
- I put the brand new heater core in (fitted 99% perfectly) with new sealings from Detroit Muscle Tech. (Thanks to @CBODY67; @ayilar and/or @Boydsdodge for the recommendation!).
- Put also new sealings on the heater box itself.
- Put everything in place again an reconnected the hoses. Works!

Here is my post with pictures of the sealings Hello from germany / 440 New Yorker

Here one of the old and new heater core: Hello from germany / 440 New Yorker

Greetings Manuel

Thank's but '73 is a different body from '74-'77

 

[Lycidias]

What are the differences? Did they really made huge changes to the heater box? I thought the main issue is with or without AC.

 

[DB GRAN FURY]

What are the differences? Did they really made huge changes to the heater box? I thought the main issue is with or without AC.

you may be rjght, i don't know...

 

[Big_John]

you may be rjght, i don't know...

The best thing to do is buy a Factory Service Manual (FSM) for your car. That will give you a lot of insight to how to do the job.

I like these, 1975 Chrysler, Dodge, & Plymouth CD-ROM Repair Shop Manual Original as you can just print out the pages needed for the garage. I saw the other day that they are offering some manuals on a thumb drive too. You may want to call if you want that option.

If you buy originals, I believe there are two volumes, one body and one chassis. You'll want both... The CD will contain everything though.

 

[Scoopy G]

I think it would be less trouble to just move to Florida, where we never need the heater. Yet, there are other issues here in Florida.

 

[commando1]

73 and 74 are two completely different animals.