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I am adding a factory air under-dash evaporator to my '66 coupe. Where should I punch the hole in the floor and how big should it be? There is a factory dimple on the right side of the drive tunnel just forward of the floor to firewall panel weld seam. Could that be it. I sure don't want to punch it in the wrong place. Thanks for any info.

65 Conv., 65 & 66 Coupes and the remains of
a 66' Coupe with 6 cyl. engine and V-8 3 spd.
 

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I didn't notice where the drain was supposed to go when I installed the 66 system in my car. There is a preformed hose that comes from the evaporator. I used a piece of copper tubing with a giant fender washer soldered to it to go through the floor (on the part that heads from the bottom of the floorpan to the firewall, about 3 inches south of the edge of the firewall pad). The nice part about this install was that I bent the copper tubing so it drips on the ground, and not on the headers! Sealed the entire mess up with seam sealer. I also use a small hoseclamp to secure the drainhose.

One thing you may want to do is clean out the evaporator housing. When I disassembled mine late last year, it was full of hair, lint and goo. Removed all components, sprayed simple green on it to remove the big stuff and ran it through the dishwasher (by itself, of course).

Good luck...



Steve Leslie, 65 coupe in restoration. 302, toploader, A/C, disc brakes, bench seat

http://albums.photopoint.com/j/View?u=1571478&a=12409371&p=45514468.jpg
 
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Goes thru the right toe board, bout 2/3 of the way up pretty close to the tunnel, probably where you're
looking. Check from the outside also to make sure you don't hit anything.

66 Coupe, 289/2v, C4, CA Red
 

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Here is where I drilled the hole. Picture quality is not too good, but you get the idea. You can see the huge fender washer and the tube coming out of the floor.

http://albums.photopoint.com/j/View?u=1571478&a=12287439&p=45641519.jpg


Steve Leslie, 65 coupe in restoration. 302, toploader, A/C, disc brakes, bench seat

http://albums.photopoint.com/j/View?u=1571478&a=12409371&p=45514468.jpg
 

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'65 and '66's according to Ford had different mounting locations. On '65 locate 1" hole 4.5" right of tunnel center line, 15/16" forward of the seam between the dash and floor pan.
On '66 Ford shows to locate on pass. side of tunnel a 1" hole at an existing dimple.
Hope this helps.

Scott
National Parts Depot
1965 Conv:Street driven concours
1966 Coupe: Daily driver and toy
 

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The dimple you see is the location. Drill a one inch hole. That's it!

Vintage Burgundy 1966 Mustang GT Fastback (Midlife's younger brother)
MCA member #46447
http://albums.photopoint.com/j/View?u=1582316&a=12039610&p=45219205.jpg
 

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Scott: Read your recent reply about locating the AC drain hose on a '65. I have a drain hose (https://www.npdlink.com/product/hose-evaporator-drain-approximately-13-inch-correct-original/103331?backurl=search/products?search_terms=ac%2Bdrain%2Bhose&top_parent=200001&year=1965&year=1965) and I'm assuming that the "larger" end of the hose with the angled fitting goes on the drain nib from the AC, and then the ribbed end goes down through the transmission hump. However, the larger end doesn't fit onto the AC drain nib - it's very loose and falls off. I don't think a pipe claim would even work. Other thoughts? Thanks.
 

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Scott: Read your recent reply about locating the AC drain hose on a '65. I have a drain hose (https://www.npdlink.com/product/hose-evaporator-drain-approximately-13-inch-correct-original/103331?backurl=search/products?search_terms=ac%2Bdrain%2Bhose&top_parent=200001&year=1965&year=1965) and I'm assuming that the "larger" end of the hose with the angled fitting goes on the drain nib from the AC, and then the ribbed end goes down through the transmission hump. However, the larger end doesn't fit onto the AC drain nib - it's very loose and falls off. I don't think a pipe claim would even work. Other thoughts? Thanks.
Actually the ribbed end goes into the drain on the AC and the wider end goes thru the tunnel.
 

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The Actual Drilled or Punched out hole for the drain is on the Passenger side of the Transmission Tunnel. I'll see if we can't supply a pic or two of where it is. Can't remember the actual hole size, but the hole should be a few millimeters bigger than the hose itself not to chaff the hose... Some Aftermartket AC Kits also include a Rubber Gasket for the hole as well which does help. Pic was in my files from years ago...but was originally from the www.concoursmustang.com website.. ...so a shout out to Jeff Speegle and Charles Turner for the pic where credit is due.

If you look at the pic, You can clearly see the hole is about and inch forward of the Sheetmetal lip..

:eek:)

Tony K.
 

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