Heater Core Removal Help
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
I want to further break down the box for cleaning, lubing, etc., but I've come across this rivet. It appears to be an original one, but want to know from you experts if it really is, or did someone add it on?
Thanks much.
Steve
Thanks much.
Steve
Last edited by Cavu2u; Apr 17, 2017 at 07:14 PM.
8th Gear
Joined: Jun 2021
Posts: 8
Likes: 2
From: Ocean Springs, MS
Cavu2u, I assume you were able to remove the heater core housing once you removed the 7/16 nut on the engine side of the firewall. My 73 has four studs with 7/16 nuts on the engine side. Following the shop manual, I removed the four nuts, the console and floor vents but the heater core housing will not budge. I am afraid to really try and force it out if there is some thing else holding it in there, don't know if anyone else has had this problem. Does the core housing remove easily or is there some kind of adhesive holding it in place? Thanks to anyone, I don't know if this thread is too old but hopefully I can get some insight.
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
Cavu2u, I assume you were able to remove the heater core housing once you removed the 7/16 nut on the engine side of the firewall. My 73 has four studs with 7/16 nuts on the engine side. Following the shop manual, I removed the four nuts, the console and floor vents but the heater core housing will not budge. I am afraid to really try and force it out if there is some thing else holding it in there, don't know if anyone else has had this problem. Does the core housing remove easily or is there some kind of adhesive holding it in place? Thanks to anyone, I don't know if this thread is too old but hopefully I can get some insight.
BTW, I bought a replacement core from O'Reilly's for my A/C car and it was lightweight, cheap, and didn't fit. If you have the original Harrison, KEEP IT! Take it to a radiator shop for repair. That's what I ended up doing and no problems since.
Good luck on yours.
Steve
8th Gear
Joined: Jun 2021
Posts: 8
Likes: 2
From: Ocean Springs, MS
Thanks for the reply. Yeah I bought a replacement from MAMOTORWORKS but probably a made in China replacement. I guess I will just ry to pry it out. I guess it has been in there for 49 years.
Thanks again,
Bruce
Thanks again,
Bruce
Melting Slicks
Joined: Dec 2014
Posts: 2,786
Likes: 2,328
From: Central UT
Cavu2u, I assume you were able to remove the heater core housing once you removed the 7/16 nut on the engine side of the firewall. My 73 has four studs with 7/16 nuts on the engine side. Following the shop manual, I removed the four nuts, the console and floor vents but the heater core housing will not budge. I am afraid to really try and force it out if there is some thing else holding it in there, don't know if anyone else has had this problem. Does the core housing remove easily or is there some kind of adhesive holding it in place? Thanks to anyone, I don't know if this thread is too old but hopefully I can get some insight.
- There is a clip, on the right side of the core as you're looking at it if I remember correctly. You need to remove the clip first before trying to get the core out. It can be a bit hard to see it, but you'll find it. 2 small bolts hold it in if I'm remembering correctly.
- You need to remove the core by sliding it out 'sideways', not directly straight forward - after the clip is removed.
- It's a very tight fit. Expect that you'll need to work it to get it out.
- The replacements are generally just a tad larger, so getting them back in can be a bit more difficult. I had to use a dremel tool and widen the area out just a bit. No problem because the box will cover it no problem.
- When installing the replacement core, DO NOT handle it by the heater hose in/outlets. They are just brazed on and you can loosen them if you try to force the core in by handling the core with them.
Racer
Joined: Dec 2003
Posts: 275
Likes: 6
From: NY
Having done this job twooce .... Have your radiator shop silver solder the chinese core . Remove the fire wall [6 bolts non air car] so the radiator shop can set the in /out pipes will fit properly
Last edited by sjr1971; Dec 18, 2021 at 07:41 PM.
