Close



Results 1 to 24 of 24
  1. #1

    Default 1983 Turbo RS Dash pull for AC install ....tips and tricks wanted TODAY

    I'm going to start removing the dash my 1983 Mercury Capri RS Turbo TONIGHT in order to add air conditioning. I have a complete Dash hule with heater box from a 1986 Ford Mustang with a 2.3. The plan is to use the 83 dash hule and install the 86 heater box and duct work in order to add air conditioning with a mostly factory look. Anyone who's done something like this before and has tips or tricks or feedback on what kind of problems we might experience please post.

    Many thanks

  2. #2
    FEP Member 83GLCoupe's Avatar
    Join Date
    Jul 2005
    Location
    Syracuse, New York 13211
    Posts
    334

    Default

    If I'm not mistaken, the area where the heater core and evaporator piping passes through the firewall is different. If you are punching your own hole it won't make a difference. I'm in the process of adding heat and air back to my '83 Mustang and was going to use an 86 box but changed my mind. I wanted to use the factory firewall hole and I think the blend door cable/controls were different also. So i sourced an '83 heater box with air.
    -1983 Mustang GL Coupe
    -2015 Taurus SEL (DD)
    -1982 Oldsmobile Cutlass Brougham (Wife's Toy)
    -2012 Nissan Xterra

  3. #3

    Default

    I did this to a '84 GT350. The holes in the firewall are different as noted above. Also you will need an extra brace on the inside to support the additional weight and both dash bezels on the inside are different. It really wasn't that hard a project overall. I even kept the fresh air vents since they were REAL fresh air vents and actually brought air in so I had AC and the vents.

  4. #4

    Default

    The dash is out but I found a mystery white box that's unplugged.... anyone know what this is?
    Attached Images Attached Images  

  5. #5
    FEP Member 83GLCoupe's Avatar
    Join Date
    Jul 2005
    Location
    Syracuse, New York 13211
    Posts
    334

    Default

    Quote Originally Posted by foot2floor View Post
    The dash is out but I found a mystery white box that's unplugged.... anyone know what this is?
    Seatbelt warning buzzer


    Sent from my iPhone using Tapatalk
    -1983 Mustang GL Coupe
    -2015 Taurus SEL (DD)
    -1982 Oldsmobile Cutlass Brougham (Wife's Toy)
    -2012 Nissan Xterra

  6. #6

    Default

    For reference I should add it is behind the passenger side Dash insert

  7. #7

    Default

    That's the one thank you... a shout out to Road burner for his help on removing the dash thus far

  8. #8

    Default

    that's the warning buzzer

  9. #9

    Default

    New mystery... I made the holes in the firewall for the lines to come through and bolts to come through but it seems I'm running into a conflict between shifting and too far to the passenger side and not far enough. On the one hand you can see I made the hole as far to the right as I can and still be within the indentations and still the vacuum line can't come out. On the other side I'm running into the ecu wire loom as it comes out to the firewall. I looked at several pictures of 86 and 85s online and they all appear as though the single wire loom is just above the bolt which is used on the further passenger side. Please take a look at the pictures and provide your feedback as to which way you think this needs to go and if there's something special about an 83 turbo RS since it was the first year to get the efi computer under the passenger seat.


    You will notice that the stud with the nut on it on the left hand side of the picture is overlapping The Grommet for the ecu wire loom. To anyone who's worried about the hack job on the firewall I will be welding in sheet metal to make it look more Factory once I get this figured out.
    Attached Images Attached Images   
    Last edited by foot2floor; 08-13-2017 at 04:28 AM.

  10. #10
    Moderator wraithracing's Avatar
    Join Date
    Jun 2010
    Location
    Grand Junction, CO
    Posts
    10,627

    Default

    Not sure if this will help or not due to everything being in the way. Also keep in mind this vehicle suffered an engine fire thanks to the Previous Owner's Stupidity and has yet to be repaired or corrected. That is the reason for some of the items looking a bit crusty!

    1984 SVO 2.3 Turbo. Not exactly the same vehicle, but as close as I currently own that has OEM A/C

    Name:  2017-08-13 08.34.21.jpg
Views: 91
Size:  141.3 KB

    Name:  2017-08-13 08.34.30.jpg
Views: 91
Size:  134.2 KB

    If needed, I can email you the pictures at full size so you could zoom into specific areas if needed. Just sent me a PM. If you need a picture of a certain area, just let me know. I will be out in the garage today working, so should be able to get more pictures fairly quickly.

    I did the OEM A/C swap into my PC and I just cut out the holes in the firewall. Drilled the required mounting holes and drain hole for the Evap cooler and bolted it all up. The 79 firewall didn't have the indentions like the later models, so I had to make a template to locate them, but after that everything slid in like it was original. I did not have to deal with the EFI wiring harness that you are talking about, but I believe it should be far enough out of the way to work. Good Luck!
    ​Trey

    "I Don't build it hoping for your approval! I built it because it meets mine!"

    "I've spent most of my money on Mustangs, racing, and women... the rest I just wasted."

    Mustangs Past: Too many to remember!
    Current Mustangs:
    1969 Mach 1
    1979 Pace Car now 5.0/5 speed
    1982 GT Awaiting Restoration
    1984 SVO Restoration in Progress
    1986 GT Wrecked by PO, but still want to save!

    Current Capris:
    1982 Capri Roller
    1984 Capri Returned to Bubble Back Glory
    1983-84 Gloy Racing Trans Am/IMSA Body Parts

  11. #11

    Default

    I don't recall having all those issues when I did my conversion at all or having to do anywhere near the cutting you already have. I just looked at my 5.0 that I have now which is all OEM and you aren't as far off as you think you are. All of them have the hole there, the 5.0 cars just got an oval solid grommet instead of one with a hole for a harness to pass through. If Photobucket wasn't such a bunch of douchebags, I would post up a picture. You are just a tad too far to the passenger side but not by much. The very edge of the grommet on my car actually covers up a very slight portion of the washer. I mean VERY small, not as much as yours. Maybe 1/16-1/32 of an inch of the grommet edge overlaps the washer. I think you are pretty much there.
    Also the stud/nut and washer on my car appears to be 100% centered under that round grommet over it that you have a yellow wire coming through. Mine also looks to be a tad higher and closer to that round grommet but again, not by much.
    Last edited by homer302; 08-13-2017 at 02:17 PM.

  12. #12

    Default

    I just looked again you are DEFINITELY lower compared to mine. Mine has about 1/2 the distance between the lowest part of the round grommet and the outside washer edge that you have. I would say pretty much exactly half that.
    Last edited by homer302; 08-13-2017 at 02:43 PM.

  13. #13

    Default

    Quote Originally Posted by wraithracing View Post

    If needed, I can email you the pictures at full size so you could zoom into specific areas if needed. Just sent me a PM. If you need a picture of a certain area, just let me know. I will be out in the garage today working, so should be able to get more pictures fairly quickly.
    Can you move the o2 sensor pigtail and other wires out of the way and get a picture of the orientation of the most passenger side stud that attaches to the heater box in relation to the grommet which is got the EFI wires in it and The Grommet which has the single wire up above that Bolt.

  14. #14
    Moderator wraithracing's Avatar
    Join Date
    Jun 2010
    Location
    Grand Junction, CO
    Posts
    10,627

    Default

    That's about the best I can do without removing the accumulator .

    Name:  2017-08-13 17.19.55.jpg
Views: 78
Size:  74.0 KB
    ​Trey

    "I Don't build it hoping for your approval! I built it because it meets mine!"

    "I've spent most of my money on Mustangs, racing, and women... the rest I just wasted."

    Mustangs Past: Too many to remember!
    Current Mustangs:
    1969 Mach 1
    1979 Pace Car now 5.0/5 speed
    1982 GT Awaiting Restoration
    1984 SVO Restoration in Progress
    1986 GT Wrecked by PO, but still want to save!

    Current Capris:
    1982 Capri Roller
    1984 Capri Returned to Bubble Back Glory
    1983-84 Gloy Racing Trans Am/IMSA Body Parts

  15. #15
    FEP Supporter ccurtin's Avatar
    Join Date
    Apr 2009
    Location
    Acworth, GA
    Posts
    1,324

    Default

    Here is the best straight on picture I could find of mine to give you an idea of what the 84 looks like:

    Engine bay tear down by Curtin Family, on Flickr
    I'm an FEP Paid Supporter and proud of it. Are you?

    1984 Capri Turbo RS - Alive after 7 years! Build Thread
    2006 Mustang GT - daily driver

  16. #16
    FEP Supporter ccurtin's Avatar
    Join Date
    Apr 2009
    Location
    Acworth, GA
    Posts
    1,324

    Default

    Here's one from the inside.

    IMG_0052 by Curtin Family, on Flickr
    I'm an FEP Paid Supporter and proud of it. Are you?

    1984 Capri Turbo RS - Alive after 7 years! Build Thread
    2006 Mustang GT - daily driver

  17. #17

    Default

    These pictures are incredibly helpful. One very notable difference between the 86 heater box (which is what my donor came out of) and the pictures from your 84 is the size and shape of the large hole. I would like to see a picture if anyone has one of the foam insulator that seals the heater box to the outside world on an 84. Because it looks like on the 86 and 87 boxes I have at my disposal it is not squarish like I see on your 84 pictures.
    Again I want to thank both of you for the incredible help these are at getting this job done.

  18. #18
    FEP Supporter ccurtin's Avatar
    Join Date
    Apr 2009
    Location
    Acworth, GA
    Posts
    1,324

    Default

    IMG_0801 by Curtin Family, on Flickr

    IMG_0802 by Curtin Family, on Flickr

    Is this what you're asking about?
    I'm an FEP Paid Supporter and proud of it. Are you?

    1984 Capri Turbo RS - Alive after 7 years! Build Thread
    2006 Mustang GT - daily driver

  19. #19

    Default

    Exactly! Thank you! Clearly the vacuum line comes put in a different place and this is key to my concerns.

    Where did you get the foam for your 84?
    Last edited by foot2floor; 08-14-2017 at 12:34 PM.

  20. #20
    FEP Member 83GLCoupe's Avatar
    Join Date
    Jul 2005
    Location
    Syracuse, New York 13211
    Posts
    334

    Default

    I still have the foam from the 86 box that I didn't use if you want it.


    Sent from my iPhone using Tapatalk
    -1983 Mustang GL Coupe
    -2015 Taurus SEL (DD)
    -1982 Oldsmobile Cutlass Brougham (Wife's Toy)
    -2012 Nissan Xterra

  21. #21
    Moderator wraithracing's Avatar
    Join Date
    Jun 2010
    Location
    Grand Junction, CO
    Posts
    10,627

    Default

    Quote Originally Posted by foot2floor View Post
    Exactly! Thank you! Clearly the vacuum line comes put in a different place and this is key to my concerns.

    Where did you get the foam for your 84?
    The vacuum line should come thru the foam around the Evap Core lines. Where exactly doesn't really matter. Its just a vacuum line to run the blend doors on the HVAC unit. You can see the hole in the foam pictures above, but I have seen the line come thru the same hole as the Evap core tubes also. Don't worry too much about it. Just poke it thru and hook it up!
    ​Trey

    "I Don't build it hoping for your approval! I built it because it meets mine!"

    "I've spent most of my money on Mustangs, racing, and women... the rest I just wasted."

    Mustangs Past: Too many to remember!
    Current Mustangs:
    1969 Mach 1
    1979 Pace Car now 5.0/5 speed
    1982 GT Awaiting Restoration
    1984 SVO Restoration in Progress
    1986 GT Wrecked by PO, but still want to save!

    Current Capris:
    1982 Capri Roller
    1984 Capri Returned to Bubble Back Glory
    1983-84 Gloy Racing Trans Am/IMSA Body Parts

  22. #22

    Default

    Quote Originally Posted by 83GLCoupe View Post
    I still have the foam from the 86 box that I didn't use if you want it.


    Sent from my iPhone using Tapatalk
    Thanks for your generosity but I actually have two of these just like this. What I'm looking for is foam that matches the whole that you see up above for the 84 version. It is much wider then the 86 foam.

  23. #23
    FEP Supporter ccurtin's Avatar
    Join Date
    Apr 2009
    Location
    Acworth, GA
    Posts
    1,324

    Default

    I just went to Michaels and looked at the dense foam they had available and put a piece in front of the original, dry rotted foam. Unless you're doing a show car no one will notice it isn't the same density.
    I'm an FEP Paid Supporter and proud of it. Are you?

    1984 Capri Turbo RS - Alive after 7 years! Build Thread
    2006 Mustang GT - daily driver

  24. #24

    Default

    We'll see if this ends up being really stupid but I went to Lowe's and bought some of the foam mats used to keep workers feet from wearing out when they stand a long period of time. It was $4.55 a linear foot and about half an inch thick. I bought one linear foot and folded it in half so it's double thickness and then cut it to shape. I don't know how well this will hold up to the Heat of being in a firewall but i will find out and report back. The material is very good to work with as it is easy to cut and easy to conform to the shape I need.

    I believe the factory firewall had a slight rib where it contacted the foam. Because I have cut these holes out of flat spots in the sheet metal I not said ridge indenting into my foam. I was considering just putting some silicone sealant around the edge in a way that it wouldn't be seen but would still seal it? Anyone else got any other ideas on how to approach it?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •