Heater Core cover caught on something.
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 2,412
Likes: 3
Heater Core cover caught on something.
I separated the heater box from the firewall and moved the top a few inches back. But something is caught on the bottom preventing it from breaking free of the firewall. What is it and how do I get it off?
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Unfortunetly I have a lot of experience in this. One did you get the nut/ stud off on the utmost right side by the blower motor? If you have verified all 5 nuts are off on the engine bay side then rock it up and down. The studs were bent on both my Vettes and required some "encouraging" to remove.
Melting Slicks
Joined: Mar 2005
Posts: 2,094
Likes: 298
From: Midlothian VA
Originally Posted by torqvette
I separated the heater box from the firewall and moved the top a few inches back. But something is caught on the bottom preventing it from breaking free of the firewall. What is it and how do I get it off?
What year are we talking about and which side of the firewall are you working from? Are you pulling the heater duct from inside the car OR are you pulling the blower box from the engine compartment?
NCM Grand Opening Veteran
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
If you are pulling the heater core from inside the car then the feed tubes are probably what's hanging up. Make sure you have removed any & all clamps, etc. While pulling up on the core/box also rotate the assembly slightly towards the rear of the car, it should slide out. I should note that my dash was completely out when I did this so I had lots of room to work. If you are not reusing the core, you might consider cutting the core tubes as high as possible, from underneath the car. This would ease the extraction process.
Racer
Joined: Aug 2005
Posts: 431
Likes: 0
From: Oita, Japan
Originally Posted by ratflinger
If you are pulling the heater core from inside the car then the feed tubes are probably what's hanging up. Make sure you have removed any & all clamps, etc. While pulling up on the core/box also rotate the assembly slightly towards the rear of the car, it should slide out. I should note that my dash was completely out when I did this so I had lots of room to work. If you are not reusing the core, you might consider cutting the core tubes as high as possible, from underneath the car. This would ease the extraction process.
I just did this a few days ago on my '72. I had the same problem. You have to rotate the box (top toward you, bottom left against fire wall) to get he feeder tubes to come up and out. I did it without cutting the tubes.
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
absoluely no reason to cut the tubes. I first pulled the outer core box with blower and htr core motor out from the engine bay side and then I pulled the inner box from the interior of the car.
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Does it matter which hose goes where? Is one in and the other out?
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Be extra careful when putting the hoses back on. Try to support the core inlet/outlet as you put the hose on so you do not break the solder joint at the core. Been there, done that.
Instructor
Joined: Dec 2004
Posts: 198
Likes: 0
From: Newmarket Ontario
Just did mine a couple of months ago on my 79. I took alot of pictures along the way. When I put the hoses back on the tubes I lubricated the inside of the hoses with margarine and they went on real slick. But before you put everything back together start it up to make sure it does not leak. It has been known that you can be sold a bad heater core.
