removing heater core on a 67 - Chevy Nova Forum
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Old 16th-March-2006, 09:39 PM   #1
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removing heater core on a 67

need some advice on how to remove a heater core please
thank you frank
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Old 17th-March-2006, 09:27 AM   #2
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heater core removal

I just changed mine this winter, not too difficult of a job.
-Drain the radiator
From inside engine comp. remove the nuts around the blower motor holding it to the fire wall and disconnect radiator hoses from firewall
From inside the vehicle remove the glove compartment door and cardboard compartment itself, for access.
Remove the screws holding the heater distributor bracket to the dash
Detach speed nuts holding the heater assembly to the dash and lower it to the floor
Disconnect all cable connections, wire connecter and defroster hoses
Remove assembly from vehicle
Remove screws holding cover to heater
Remove core mounting screws and core from the heater
Its a good idea to lubricate all the door flap hinges while you have it apart.
Most of this was taken from Chiltons repair manual
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Old 17th-March-2006, 10:05 AM   #3
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Just my 2 cents, but I would suggest spending the money on a seal kit while it's out. If you do this, also pick up a box of strip caulk (dum dum) to seal all the exterior leaks of the unit.

Tim
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Old 14th-June-2006, 11:39 AM   #4
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Quote:
Originally Posted by Cdn67
Just my 2 cents, but I would suggest spending the money on a seal kit while it's out. If you do this, also pick up a box of strip caulk (dum dum) to seal all the exterior leaks of the unit.

Tim
what is the advantage of using strip caulk over the typical blue silicone gasket maker?
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Old 2nd-August-2006, 11:17 AM   #5
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Can you use clear silicon for a sealer>

Do most parts stores carry strip caulk?

I'll be replacing my heater core within the next few days.
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Old 2nd-August-2006, 11:23 AM   #6
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Can you use clear silicon for a sealer>

Do most parts stores carry strip caulk?

I'll be replacing my heater core within the next few days.
I used black silicon sealer for my heaterbox and everything looks/works great. I also replaced all the gaskets in there too.
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Old 2nd-August-2006, 11:34 AM   #7
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Thanks Blurr!
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Old 2nd-August-2006, 11:34 AM   #8
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Silicone sealer is for bath tubs , and will make a mess . Use the DUM DUM
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Old 2nd-August-2006, 11:38 AM   #9
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Silicone sealer is for bath tubs , and will make a mess . Use the DUM DUM
no mess at all and i could easily control the volume/thickness of the bead where necessary. no doubt GM would have used silicon sealer back in the day if it were available!
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Old 2nd-August-2006, 01:04 PM   #10
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Most stores that might carry mix of body shop stuff will also either have in stock or can order the strip caulk. I used it, but in hindsight, I probably saved the bucks and just used a tube of silicone laying on my bench. You also need to consider maybe insulating your doors in the box while you have it out. I followed Johnny's advice and cut up some old mouse pads and used spray adhesive to glue them on, they're a nice weight. Painted my box while it was out too.
Brett.
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Old 2nd-August-2006, 05:53 PM   #11
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i used silicone and it worked great also changed the gaskets works perfectly
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Old 4th-August-2006, 08:40 AM   #12
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Is the process basically the same for a '64?
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Old 4th-August-2006, 09:55 AM   #13
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Yep the heater boxes are basically the same. Its a good Idea to replace the foam while it's out. NNN has a kit of the pieces if you don't want the mouse pad route. I didn't bother to use sealer on the box when I put it back together. It is messy (either the silocone or Dum-Dum), and I don't see that a small amount of air leakage at the flanges of the heater box is much of a deal.
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Old 4th-August-2006, 10:19 AM   #14
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I'll be doing this job this weekend. Thanks guys for all the tips.
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Old 4th-August-2006, 02:54 PM   #15
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I used Silcone as well, but haven't "tested" the results yet...

I think the worst part was sandblasting every nook and cranny of the thing !!
(especially when it is not one of those "Ohhh, Ahhhh Parts")



-Brent Thomas
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