Heater core and blower motor

Old April 13th, 2019, 04:41 PM
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Heater core and blower motor



One of the first drives of the year and my heater core blew on my 67 Conv Cutlass. Ruined my carpet too.
The level of dissembly is ridiculous...hood, fender, front seat, carpet, blah, blah, blah. (I know, I donít have to remove the fender but it sure made it a lot easier to get everything apart.
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Old April 13th, 2019, 04:43 PM
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So the MAWs would dictate replacing the blower motor but mine is a non AC car and the current blower motor does not have the vent tube but every replacement out there has the hole for the vent. Can I install the blower motor with the vent hole and just leave it open?
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Old April 13th, 2019, 04:46 PM
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Yep, they're a pain! Over the years I've replaced a couple cores before replacing the carpet "just in case". Although with so much made in China stuff some have commented it may be worth having a good radiator shop try to refurbish the old OEM core rather than replace with new.
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Old April 13th, 2019, 04:48 PM
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Also - FYI - the radiator guy who recored the heater core found a ton of sealant clogging the core. He said when people use too much sealant during a rebuild, it ends up in the heater core. Pretty nasty. I wonder if that was clogging my water passages and causing the high temps and stumbling I had with my motor.
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Old April 13th, 2019, 10:05 PM
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Wow, I never have to remove that much stuff to get at the core. Remove the 5 nuts on the firewall, the one behind the wheel well is a bit of chore, and pull the heater box into the passenger compartment. Going back together I leave the nut off that's behind the fender. If the blower isn't bad why replace it? For the carpet, just vacuum and dry it out.
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Old April 15th, 2019, 12:06 PM
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You’ve taken it down that much you might as well do a frame off resto.
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