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Old 04-21-2018, 07:07 PM   #1
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1977 20' Argosy 20
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Any ideas where I can find a Heater Core 1977 20 454

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Old 04-21-2018, 08:14 PM   #2
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Looks like a Harrison heater core. Google Harrison.
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Old 04-21-2018, 08:47 PM   #3
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Any good radiator shop can either repair or build you a new one. Trouble is, it's becoming a lost art and radiator shops are disappearing.
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Old 04-21-2018, 09:44 PM   #4
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Are there any part numbers on the core at all?

If Bkahler doesn't know, I'd post more pics of the core, inlet, outlet locations and sizes and we'll try to find it.

I tried to paste and copy the heater core page, but it may not take you there, so search Chevrolet P30 heater core.

https://www.autozone.com/cooling-hea.../chevrolet/p30

Cheers
Sidekick Tony
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Old 04-22-2018, 05:36 AM   #5
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Jami,

As mentioned previously look for a good (i.e. old) radiator shop in your area and take it to them. Re-coring is a distinct possibility. If you can't find something locally send me a couple of good detailed pictures showing front and back and I can show it to the local shop here to see what they have to say.

Brad
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Old 04-22-2018, 09:57 AM   #6
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Quote:
Originally Posted by bkahler View Post
Jami,

As mentioned previously look for a good (i.e. old) radiator shop in your area and take it to them. Re-coring is a distinct possibility. If you can't find something locally send me a couple of good detailed pictures showing front and back and I can show it to the local shop here to see what they have to say.

Brad
Try A & A Auto Radiator on Washington Street, East Weymouth; Bella's radiator went out for re-core to those guys. I can't confirm they did it but Airstream NE sent it there!
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Old 04-22-2018, 10:19 AM   #7
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1977 20' Argosy 20
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Quote:
Originally Posted by Isuzusweet View Post

Are there any part numbers on the core at all?

post more pics of the core, inlet, outlet locations and sizes and we'll try to find it.


Cheers
Sidekick Tony
No part #'s as we can find.

12 3/4 Length
7 3/4 Width
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Old 04-22-2018, 10:21 AM   #8
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Pics

Quote:
Originally Posted by Isuzusweet View Post
Are there any part numbers on the core at all?

post more pics of the core, inlet, outlet locations and sizes and we'll try to find it.

Cheers
Sidekick Tony
More pictures.
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Old 04-22-2018, 10:29 AM   #9
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Quote:
Originally Posted by martin300662 View Post
Try A & A Auto Radiator on Washington Street, East Weymouth; Bella's radiator went out for re-core to those guys. I can't confirm they did it but Airstream NE sent it there!
So great you know my neck of the woods!!

Ill check them out in the am!!

Thanks Martin!
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Old 04-22-2018, 10:23 PM   #10
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77 Argosy Heater Core

Whatever you do dont let that old one get away from you. Those heater units are actually school bus or truck heaters and I believe the company that made them has merged or been bought out.

Some years ago my heater core in my 1977 20 developed leaks just like yours and the local radiator shop recored mine. Of course they need the end covers from the old one. Here in my local city all four radiator shops are now out of business. In larger cities where radiators are still repaired on trucks or heavy equipment there is usually a shop still around. Modern vehicles have aluminum radiators with plastic tanks and are not worth repairing. They are just replaced.

The small hole had a schrader (tire) valve screwed into it. Since the heater sits up higher than the radiator, the valve was there for air bleeding when changing out engine coolant. A cap is necessary since the valve can leak sometimes.

I am in for the night but tomorrow I can look up the manufacturer of those heater units for the 1977s. I did look them up about 2 years ago but found no parts available.

Good Luck, Gregg
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Old 04-23-2018, 06:54 AM   #11
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I am going to bring it to a local shop today. I have spent so much time looking for one of these Im going cross-eyed!! Also, we measured wrong. Found out only element is measured. Ill post pics.. thank you!
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Old 04-23-2018, 06:57 AM   #12
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More pictures.

Measuring Core only

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Old 04-23-2018, 10:25 AM   #13
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1977 Argosy Heater Manufacturer

Here is a picture of the Name Tag on a 1977 Argosy Heater Unit. It is a Model 940H Heater, Manufactured by Mobile Products Div. of Hupp Inc. in Cleveland, OH.
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Old 04-23-2018, 10:51 AM   #14
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I also discovered this morning that if you search in Google for Hupp 940-H-12 heater parts a page will come up in Mill Supply (millsupply.com) for replacement parts including heater cores. Their page gives dimensions for their replacement heater cores (about $100). It looks from the pictures that the fitting locations may be somewhat different but workable. They also list a complete heater assembly for about $350 for a Hupp heater replacement.
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