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Author
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Topic: heater/air box removal
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B78Cobra
Journeyman Posts: 15
From: davison, Mi, USA
Registered: Apr 2001
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posted 07-24-2001 01:56 PM
   
I need to take out all the heater and blower stuff on my 78 so i can make more room for a blowproof bellhousing and headers. Has anyone takin that stuff out before, it looks pretty tough to do. The car used to have a/c too so the assemble is a lot bigger.
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mstang278
Journeyman Posts: 38
From: San Antonio, TX
Registered: Jun 2000
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posted 07-24-2001 03:38 PM
I hate to say it, but you're right about the tough job. I had to take out the majority of the dash. I have a '78 and the repair manual talks about clip that you can reach from underneath. I wasn't so lucky. The bottom was attached with screws that faced down. I had to remove the hole unit just to replace the heater core.Personally, I will not go through that again. I'm planning to put in a Vintage Air unit in the future.
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mustangj
Gearhead Posts: 259
From: fergus,ontario,canada
Registered: Mar 2001
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posted 07-24-2001 08:14 PM
I took that stuff out a long time ago and my car did not have A/C. I know it took a while, but it was just a million philips screws, nothing serious. (I used a cordless screw driver and many swear words)------------------
1978 Muscletang II t-top mach 1
1991 Lincoln mark 7
1997 Escort wagon type R
[email protected] [This message has been edited by mustangj (edited 07-24-2001).]
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The Cobraman
Gearhead Posts: 154
From: Edmond, OK USA
Registered: Jun 99
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posted 07-24-2001 09:43 PM
Drop steering column, remove entire dash. Case is attached with 4 nuts on the engine side of firewall, and 2 bolts directly below windshield. About a 3 hour job to R&R heater core and evap core, once you've done it a couple of times.
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FiveLiterDreamer
Journeyman Posts: 99
From: Conway, AR
Registered: Feb 2001
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posted 07-25-2001 01:26 AM
I had to pull the dash and heater/ac unit to reinstall in my vehicle from a parts car just last week. I'm currently in the process of reinstalling it right now, so i've actually done this twice now (removal). the easiest way that i would see to do it is to remove the entire dash(5 bolts: two on top (each corner), one on each side (near bottom), and one in middle (bottom). that will release the dash. you can probably let it sit on the steering column and pull it out enough to get to the unit underneath. Just wire it up on each side to something in order to keep all the weight off of the one spot on the steering column (plastic tends to break easily). the bolts attaching the unit go through the firewall, i believe there's five on the ac unit. just undo those bolts and pull it out from inside the car. on the ac part going through the firewall, it will not fit through the hole unless you undo the two bolts on the side of the metal ac boxy thing(in the engine compartment).then seperate the boxy thing to make it small enough to fit through the hole. good luck (hope i was clear: any questions let me know)
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B78Cobra
Journeyman Posts: 15
From: davison, Mi, USA
Registered: Apr 2001
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posted 07-23-2001 04:29 AM
Im still having a hell of a time. I took out all the bolts ( so i think ) that are holding it in, and the duct work is all loose but it wont come out on the bottom for some reason. I might have to use a little more force, Im not putting it back because I really dont need it, but I really dont want to break it.
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FiveLiterDreamer
Journeyman Posts: 99
From: Conway, AR
Registered: Feb 2001
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posted 07-26-2001 12:17 AM
i was working on mine today and thought about your situation. I forgot to tell you that there are like two more bolts attaching brackets to the top of the unit going in to the metal plate that runs underneath the windshield. make sure you get these out. it'll be easy to get to these by removing the top dash piece. good luck
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B78Cobra
Journeyman Posts: 15
From: davison, Mi, USA
Registered: Apr 2001
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posted 07-26-2001 10:20 PM
That has to be it, theres nothing else there. thanks for the help.
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