with Dave and Hawaii
Pulling Heater core.
Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 779
Likes: 0
From: San Bruno California
Pulling Heater core.
Where ( inside or out in engine comp. ) do you pull the heater core it?? If it's outside in the engine compartment, is it easier with the motor out?? I'm still waiting for my manual. Is it an easy job? Thanks, Tony
Race Director
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible
Do you have A/C or not? If not, you can remove the blower panel from the engine compartment and replace it that way. Motor? The blower motor? or the engine? No need to remove the engine... 
Last edited by Z-man; Oct 10, 2007 at 10:56 PM.
Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 779
Likes: 0
From: San Bruno California
It has A/C and the motor is my engine. Having the engine rebuilt so was wondering it having the engine out helps or it doesn't matter? If I can do it at a later date, it would help. Don't want to go off on tooo many different project. Thanks
Cruising
Joined: Jun 2002
Posts: 10
Likes: 0
From: Kailua HI
Pull the heater core out from inside the vehicle
It must be removed from inside the car.
Remove the passenger side dashboard panel (2 screws left, 2 screws right, 3 screws top).
Remove the sheet metal cover on the engine compartment side to gain access to the heater hoses.
Remove the heater hoses (you'll probably need to slit the hoses with a knife and access is tight).
Disconnect vacuum hoses, control cables, etc. as necessary for removing the heater box.
Remove the heater box from the firewall (they use different types of fasteners, top and bottom...on some you will need to remove nuts from the engine compartment side of the firewall - on others simply unscrew bolts from the passenger compartment side).
The rest is easy.
You'll probably want a new seal kit because the old foam seals will likely disintegrate as you remove the old core.
Good luck.
It took me about 4 hours.
Remove the passenger side dashboard panel (2 screws left, 2 screws right, 3 screws top).
Remove the sheet metal cover on the engine compartment side to gain access to the heater hoses.
Remove the heater hoses (you'll probably need to slit the hoses with a knife and access is tight).
Disconnect vacuum hoses, control cables, etc. as necessary for removing the heater box.
Remove the heater box from the firewall (they use different types of fasteners, top and bottom...on some you will need to remove nuts from the engine compartment side of the firewall - on others simply unscrew bolts from the passenger compartment side).
The rest is easy.
You'll probably want a new seal kit because the old foam seals will likely disintegrate as you remove the old core.
Good luck.
It took me about 4 hours.
Burning Brakes
Joined: Apr 2000
Posts: 1,012
Likes: 0
From: Minnesota
Give yourself a root canal as a warm up to this project
Just kidding--be patient, go slow, and make sure to pressure test the new heater core before placing it in the car.
SEMPER FI--1970 Dave
Instructor
Joined: Sep 2007
Posts: 109
Likes: 0
From: Woodstock Ga
This may be a dumb question but what is the advantage to removing the heater core besides weight reduction? Ive heard that this can be one way to reduce excess engine heat in the cabin, once everything is sealed off... t/f?
Burning Brakes
Joined: Oct 2001
Posts: 896
Likes: 1
From: Thomasville, home of the Big Chair NC
I guess maybe he should have said replacing instead of removing.
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Thread Starter
Burning Brakes
Joined: Feb 2007
Posts: 779
Likes: 0
From: San Bruno California
Hey, thanks guy for all the information. When I said removing, I meant relacing. The only reason for this question was that I have a leak in the freeze plug behind the motor mount. It was probibly leaking when the last owner had it. I pulled the motor to have it rebuilt and I brought the radiator to the shop thinking of a presure test and a new paint. He said that the radiator would not make it. Showed me the radiator he replaced and the lower water way was bloated out ready to explode. The last owner must have use some kind of silicone stop leak. So I assume that the heater core might have the samething in it. I may not. Not sure. I should blow it out with water. There's no leak. So I think I can wait it out till it does give s me problem. Main concern now is to get the motor rebuilt and put back in and get it running. I want to drive it before the rain really starts. Been down since Aug. Waiting for the cam, lifters, springs, and the rockers to come in.Sure thake s the engine shop a long time. Thanks again guys. Tony
