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Author Topic: AC Question or Two  (Read 2557 times)

Offline TxFiddler

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AC Question or Two
« on: January 28, 2011, 08:31:45 pm »
While I am cleaning up the firewall, paint, hiding wires, etc, I noticed that the "flapper" to the fresh air is broken.  It is connected to a diaphragm that opens and closes it.  Are these available or do I need to fabricate one? 
Thanks
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80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator

Offline Psycho71

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Re: AC Question or Two
« Reply #1 on: January 29, 2011, 07:47:13 pm »
I haven't seen the flappers available as repopped parts. You'd have to fab one, junkyard one, or catch someone parting out a truck and get it cheap. The latter is how I got replacements for my '71. .
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There are two tools needed, duct tape and WD40. If it moves and shouldn't, use the duct tape. If it doesn't move and should, use the WD 40.

Offline VileZambonie

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Re: AC Question or Two
« Reply #2 on: January 29, 2011, 07:49:28 pm »
Get a donor unit
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Offline ehjorten

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Re: AC Question or Two
« Reply #3 on: January 31, 2011, 02:19:46 pm »
Are you sure it is broken?  Have you taken the heater box off of the firewall?  That door is connected to a diaphram via a small plastic piece that is bolted to the metal door.  The plastic piece is connected to a flat metal rod with a rivet.  Why do you say it is broken?  Doesn't function properly?
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline TxFiddler

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Re: AC Question or Two
« Reply #4 on: January 31, 2011, 03:07:58 pm »
Oh yeah, it's broken at the seam where it bends.  Junkyard time!
Thanks all.
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80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator
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