Heater core removal Help!
Thread Starter
Heel & Toe
Joined: Dec 2004
Posts: 21
Likes: 0
From: Caldwell New Jersey
Heater core removal Help!
I am at the point where I 've removed 3 hex screws (inside) and one nut (engine compartment) and the Heater core housing will not budge. What else has to be done to get it out???????
It is a 1970 with A/C
It is a 1970 with A/C
Last edited by Kdarrin; Mar 14, 2005 at 09:36 PM.
Team Owner
Joined: Aug 1999
Posts: 30,995
Likes: 98
From: Ontario
Getting information on this Forum is like pulling teeth. No year on the post re A/C or non. No year in the personal info. People, get real and get the info up there.
If non-A/C just pull the darn thing out.
If non-A/C just pull the darn thing out.
Intermediate
Joined: Dec 2004
Posts: 35
Likes: 0
From: Victoria British Columbia
I am halfway through doing mine. Mine is a 76 non A/C car but the core area looks similar to yours. For mine you have to pull out the core from inside the car. This means removing the pasenger lower dash pad, cross brace, heater core cover on the inside, probably the center instrument bezel, etc. There are a couple of handy articles on Corvettefaq.com under cooling. Have a look.
Last edited by dwe; Mar 14, 2005 at 10:06 PM. Reason: grammer
Thread Starter
Heel & Toe
Joined: Dec 2004
Posts: 21
Likes: 0
From: Caldwell New Jersey
I am at the point where all 3 screws and the nut are out of the housing but is still will not move at all. Will the hoses have to be removed before the housing can be taken out? Is your Vette A vert or not?
Last edited by Kdarrin; Mar 14, 2005 at 10:26 PM.
Racer
Joined: Dec 2002
Posts: 421
Likes: 2
From: Long Grove, IL
What do you mean that it will not move. Does it feel like it is still attached to the firewall or does it move a little and you just cannot get it completely off of the firewall? Have you removed the heater hoses from under the car? Before the inside heater box will come out you need to remove those hoses then slightly lift up on the heater box while tilting it forward because the inlet and outlet to the heater core point down on the other side of the firewall. If you have the replacement heater core already you will see what I am talking about and if not let me know and I can post a pic.
When I removed mine the inside heater box was sealed to the firewall with silicone sealant and felt like it was still attached but a little gentle persuasion was all it took to break it free.
Regards,
Jay
When I removed mine the inside heater box was sealed to the firewall with silicone sealant and felt like it was still attached but a little gentle persuasion was all it took to break it free.
Regards,
Jay
Last edited by griffths; Mar 14, 2005 at 10:31 PM.
Racer
Joined: Dec 2002
Posts: 421
Likes: 2
From: Long Grove, IL
Originally Posted by Kdarrin
My housing is just stuck in place. I can jiggle it, but that is all it will do. I tried a crow bar an it still doesn't move. any suggestions?
Jay
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Racer
Joined: Aug 2000
Posts: 488
Likes: 0
From: Fremont,CA
For mine (69/no air) I had to pull out the core from inside the car. This means (after removing the heater hoses) removing the passenger lower dash pad, cross brace, heater core cover on the inside, part of the center instrument bezel, etc. There was very little room to remove it. Was such a pain the the butt I put plugs in the in/outlet and never hooked it up. This is OK, I live in CA!
Thread Starter
Heel & Toe
Joined: Dec 2004
Posts: 21
Likes: 0
From: Caldwell New Jersey
So what should happen, after the removal of the screws and nut the housing should basicly fall off the firewall?
Or do you have to remove the hoses also?
This car has A/C should that make any real difference
Or do you have to remove the hoses also?
This car has A/C should that make any real difference
Last edited by Kdarrin; Mar 14, 2005 at 10:38 PM.
Racer
Joined: Dec 2002
Posts: 421
Likes: 2
From: Long Grove, IL
Originally Posted by Kdarrin
So what should happen, after the removal of the screws and nut the housing should basicly fall off the firewall?
Or do you have to remove the hoses also?
This car has A/C should that make any real difference
Or do you have to remove the hoses also?
This car has A/C should that make any real difference
I had to do the same thing on my car 69 'vert with A/C so the procedure will be the same on your car as well.
Jay
Thread Starter
Heel & Toe
Joined: Dec 2004
Posts: 21
Likes: 0
From: Caldwell New Jersey
I checked where the hoses are. the clamps are in a spot where it is nearly impossible to get to them. The A/C housing is slightly covering them.
Since your car is a vert is that why you have a brace under the dash
Since your car is a vert is that why you have a brace under the dash
Racer
Joined: Dec 2002
Posts: 421
Likes: 2
From: Long Grove, IL
All cars have bracing under the dash but there is extra bracing on the convertibles to compensate for the extra flex in the frame.
It may be easier to use a wrench on the hose clamps than try to get a screwdriver up there but keep in mind that someone tightened them up before you so there IS a way to loosen them now.
Regards,
Jay
It may be easier to use a wrench on the hose clamps than try to get a screwdriver up there but keep in mind that someone tightened them up before you so there IS a way to loosen them now.
Regards,
Jay
Thread Starter
Heel & Toe
Joined: Dec 2004
Posts: 21
Likes: 0
From: Caldwell New Jersey
Check out this heater housing photo on ebay. It doesn't appear that the hoses were removed at the core end when this was taken out.
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
Racer
Joined: Dec 2002
Posts: 421
Likes: 2
From: Long Grove, IL
That is certainly another way to remove the heater core althoug it will be a little more work to remove the hoses at the other end and thread them through the firewall. Keep in mind that there is more than one way to accomplish the same thing and so long as you get the thing out without breaking anything it really doesn't matter how you do it. In my case it was easier to take the hoses off of the heater core under the car - although I ended up drenching myself in antifreeze. I am not sure about a 70, but on my 69 there is a hot water shutoff valve that looks like it would be almost impossible to get to in order to remove one of the hoses.
Jay
Jay
Thread Starter
Heel & Toe
Joined: Dec 2004
Posts: 21
Likes: 0
From: Caldwell New Jersey
How much fluid should I expect to come out after the removal of the hoses.
Will it be just what is in the overflow tank or the whole engine?
Will it be just what is in the overflow tank or the whole engine?
Last edited by Kdarrin; Mar 14, 2005 at 11:16 PM.
Thread Starter
Heel & Toe
Joined: Dec 2004
Posts: 21
Likes: 0
From: Caldwell New Jersey
Your right about the shut off. It has a very short hose between it and the core maybe this is why the housing has very little movement.
I will try the hose removal tomorrow because my frustration level is at it's peak right now and it's late. It's better for me to cool off before something breaks.
I will try the hose removal tomorrow because my frustration level is at it's peak right now and it's late. It's better for me to cool off before something breaks.
Drifting
Joined: Aug 2002
Posts: 1,731
Likes: 22
From: Marietta Ga.