Cutting my firewall to remove A/C
#1
Cutting my firewall to remove A/C
Im cutting the firewall section out of a non-A/C truck, and will MIG it onto my 78 supercab to get rid of the HUGE factory A/C unit, which will make changing plugs, headers, plug wires etc, much easier.
Ive got all the non-A/C ductwork and heater controls cleaned up and ready to go.
Anyone else done this? foresee any troubles? The cut is from a '75.
Thanks.
Ive got all the non-A/C ductwork and heater controls cleaned up and ready to go.
Anyone else done this? foresee any troubles? The cut is from a '75.
Thanks.
#2
#3
Join Date: Jun 2002
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I had to do the same thing you are talking about when I installed my Cummins. The turbo and exhaust didn't play well with the Ford AC box.
I used seam sealer and rivets instead of welding. Make sure you get your firewall piece in properly so the heater box lines up and seals tight on the cold air intake on the kick panel. You will need the defrost ducting as well as the ac type duct won't line up properly with the heater box.
I used seam sealer and rivets instead of welding. Make sure you get your firewall piece in properly so the heater box lines up and seals tight on the cold air intake on the kick panel. You will need the defrost ducting as well as the ac type duct won't line up properly with the heater box.
#5
Found a thread about this exact subject. https://www.ford-trucks.com/forums/1...l#post17505709
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Join Date: May 2010
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Found a thread about this exact subject. https://www.ford-trucks.com/forums/1...l#post17505709
Thanks for the reminder Rich! lol.
I should also plan to do a detailed description of what I eventually end up with in terms of installing a heater box in place of the A/C system.
These old trucks are cold enough... we need heat for Saskatchewan weather sometimes (even on random summer days).
#9
Given enough money & time anything can be done!
Not on a 73-79 truck (81 F100) and not AC to Non-AC but Non-AC to AC.
Started with this non-AC fire wall.
The AC fire wall to go in
Non-AC fire wall cut out
AC fire wall clamped inplace
Welded in place
Primed & painted
Not the easy way but I wanted the factory look and why I did it that way.
Dave ----
Not on a 73-79 truck (81 F100) and not AC to Non-AC but Non-AC to AC.
Started with this non-AC fire wall.
The AC fire wall to go in
Non-AC fire wall cut out
AC fire wall clamped inplace
Welded in place
Primed & painted
Not the easy way but I wanted the factory look and why I did it that way.
Dave ----
#10
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ejohns06
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11-18-2012 10:27 PM