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Author Topic: Help identifying heater box part  (Read 392 times)
DAVEN1256
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« on: March 07, 2014, 11:03:31 PM »

Can someone tell me what the purpose of this part is inside the heater box. There are two of them. They are made of fairly stiff rubber. The part of it you see exposed behind where the heater core goes is the smaller part of it. The larger part is hidden in the cold air passageway behind the heater core housing. My guess is that they helps control the airflow through the cold air passageway or maybe is some sort of damper between the heater core housing and the outside of the heater box.

The reason I am asking is that I destroyed one of these while cleaning my heater box. I don't see these in any of the catalogs and assume they are unavailable. I am going to make something similar to replace it and it would help if I knew what it was supposed to do.

Thanks...............Dave

( I hope Paulmanta doesn't mind me using the picture of his heater box for this )



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69Z28
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« Reply #1 on: March 08, 2014, 02:24:36 AM »

Hi Dave...maybe some kind of cushion to keep vibration/rattle noise down? or some support for the heater core weight? See where the thumb and finger is holding it? it looks like SOMETHING has compressed it. Just a guess on my end.
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GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28
Mike S
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« Reply #2 on: March 08, 2014, 11:53:51 AM »

 Looking at the extended end-to-end length of the rubber inside the cold air passage side it looks to make contact with one folded edge closest to the heater box, hence a seal. I think the rubber is there to act as a top and bottom air dam to keep pressurized cool air away from the hot air door top and bottom edges for various heat settings to force air around the door flap back. The internal stamping of the box is very rigid so the rubber may be acting as a secondary benefit of support but that may be debatable.

Mike
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67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Restored
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