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Unread 12-01-2013, 03:50 PM   #1
danfrye
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1978 CJ7 
 
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CJ7 Heater Core Plenum/housing removal

Swapping my Heater core plenum/box w/ actuators into a newer tub. But for the life of me I cannot find a nut, bolt or screw under the dash to take it apart. Are they suppose to be taken apart from the firewall side? Note: this jeep has had lots of fab work so... not sure if they covered up the nuts and bolts.

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Unread 12-01-2013, 04:14 PM   #2
lucdog
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1980 CJ5 
 
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4 nuts on the engine side of the fire wall.

B
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Unread 12-01-2013, 04:19 PM   #3
gainesee
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One directly behind the valve cover and three around the battery tray area
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Unread 12-01-2013, 05:06 PM   #4
Renegade82
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1982 CJ7 
 
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Look for (4) 1/4" studs with a nut and probably a star washer on them.
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Unread 12-02-2013, 11:58 AM   #5
danfrye
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Thanks guys. Found the bolts. Some old fab work covering up one of them... Nothing a little grinding cant fix though. Thanks again
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Unread 12-02-2013, 12:07 PM   #6
DucST4
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Now would be a good time to install a Chevy Blazer fan motor. Huge increase in air flow. And a low dollar project that has a good return.

I found it a ton easier to remove the passenger seat to get the box installed
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Unread 12-03-2013, 04:09 PM   #7
Renegade82
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Agreed. A $22 motor and some labor to enlarge the firewall hole that's there now.
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Unread 12-04-2013, 11:11 AM   #8
Blakescj7
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Quote:
Originally Posted by Renegade82 View Post
Agreed. A $22 motor and some labor to enlarge the firewall hole that's there now.
if youd even call it labor, took less than a minute with a high speed rotary file. Oh and if you do the upgrade i got mine from a 77 blazer at oreillys. if it has a heat sink collar on just slide it off before you grind the hole to keep from making the hole too large. then just slide it back on after its throught the fire wall.
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Unread 12-06-2013, 09:38 PM   #9
danfrye
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Okay... sounds like a plan... I'll look into the fan motor. Thanks again for the tips
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