Author Topic: Passenger Side Backing Plate for Sport Mirrors?  (Read 832 times)

cyber104

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Passenger Side Backing Plate for Sport Mirrors?
« on: September 16, 2018, 01:09:27 PM »
Hi All:

Is there supposed to be a backing plate for the passenger side sport mirrors?

Thx,
Chris
1978 TA 4-Speed W72

roadking77

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #1 on: September 16, 2018, 06:47:20 PM »
Yes.
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Aus78Formula

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cyber104

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #3 on: September 17, 2018, 05:30:50 AM »
Exactly the info I was looking for - thx much!
1978 TA 4-Speed W72

firebirdparts

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #4 on: September 17, 2018, 10:22:39 AM »
They were optional, so maybe once in a while you'd see a door without it.  I owned a couple of cars built that way, but I don't know if they had a special door just for that or not.
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1977 Y82 4-speed (red interior)
1978 Skybird 350
1978 Redbird 305
1979 Redbird 301 4-speed
1992 Lincoln Mark VII LSC/SE (red)
1970 Datsun Pickup
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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #4 on: September 17, 2018, 10:22:39 AM »

cyber104

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #5 on: September 17, 2018, 05:16:21 PM »
Hi Again:

I found the backing plate laying in the bottom of the door but I'll be darned if I can figure out where the tab with the hole bolts?  I can hold the plate up there and use it but it seems like it should be permanently affixed to something?  I see Aus's picture in the thread link above but that hole is not there for the bolt in my door.



I also found this interesting sticker on the plastic/paper water guard that is between the door panel and the metal of the door - wonder what's up with this?



I know the car was in an accident at some point on that side but is this really from a repair in 1978?  Heck, someone must have crashed the car right after they bought it lol

Chris
« Last Edit: September 17, 2018, 05:22:33 PM by cyber104 »
1978 TA 4-Speed W72

Gene-73

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #6 on: September 17, 2018, 06:04:54 PM »
It's possible that the backing plate wasn't fastened to the door itself outside of the mirror bracket screws. 
Did you take the mirror off and hear a "clunk" when the bracket fell to the bottom?
Gene


Aus78Formula

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #7 on: September 17, 2018, 11:55:20 PM »
The threads appear polished as if recently used. Flip it over to the other side and the extended tab will show if small screw has been used at some point. Mine is still not reinstalled in door, I can grab another pic with it missing to show the door inner area, might be a day or two.

cyber104

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #8 on: September 18, 2018, 05:21:41 AM »
I removed the mirror because it was flopping around - looks like the previous owner delivered another butchered job to me - they must have not known about the backing plate and simply drilled MUCH larger holes in the sheet metal - but even with the #12 sheet metal screws it wasn't holding without the plate.

The plate threads look polished because I had just cleaned them out with a tap - I'll bet that plate has been laying in there for a LONG time.

Thx all!
Chris
1978 TA 4-Speed W72

roadking77

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #9 on: September 18, 2018, 06:35:30 AM »
The mirror on the pass side was an option. Thus the reason for the backing plate to be loose. On the driver door the plate is tac welded in place. I honestly do not remember how I installed mine but I would imagine the tab goes up. I think its the same plate for either side which explains the large hole in the centre which allows the remote mirror cable to pass through.
Finished!
77 T/A - I will Call this one DONE!
79 TATA 4sp-Next Project?
79 TATA - Lost to Fire!
86 Grand Prix - Sold
85 T/A - Sold
85 Fiero - Sold
82 Firebird - Sold
'38-CZ 250
'39-BSA Gold Star
'49-Triumph 350
'52-Ariel Red Hunter
'66-BSA Lightning
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Aus78Formula

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #10 on: September 18, 2018, 11:10:00 AM »
The tab goes down and fastens into the door inner paneling, see other post with photos.

cyber104

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #11 on: September 18, 2018, 05:10:53 PM »
Yes - I carefully studied those photos but that bolt anchor point is not there on my car.

I think what I'll do is simply hold the backing plate in place while I secure the mirror bracket screws - then I just have to remember that if I remove them in the future the plate will drop into the door.

........easy for a young man to remember - but I'm getting older and I'm sure I'll forget until I hear the clunk and say oh s**t.

Chris
1978 TA 4-Speed W72

Gene-73

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #12 on: September 18, 2018, 05:45:56 PM »
I used Panel Bond adhesive and glued my backing plates to the inside of the door skins.

I also welded nuts to them where the threaded holes are before installing since these typically strip out.
Gene


Aus78Formula

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #13 on: September 19, 2018, 02:12:02 AM »
Here's the RH door showing where inner mirror mounting plate would normally be, lower tab screws into that self-tapper hole in door shell inner support.

thumbnail_16157 by Aus78Formula, on Flickr

And LH side, where the mirror mount is part of the door inner permanently.

thumbnail_16160 by Aus78Formula, on Flickr

roadking77

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #14 on: September 19, 2018, 06:26:46 AM »
good reference pics. Also good idea about the panel adhesive and welded nuts.
Finished!
77 T/A - I will Call this one DONE!
79 TATA 4sp-Next Project?
79 TATA - Lost to Fire!
86 Grand Prix - Sold
85 T/A - Sold
85 Fiero - Sold
82 Firebird - Sold
'38-CZ 250
'39-BSA Gold Star
'49-Triumph 350
'52-Ariel Red Hunter
'66-BSA Lightning
'01-HD RoadKing

Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #14 on: September 19, 2018, 06:26:46 AM »



cyber104

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Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #15 on: September 20, 2018, 06:00:53 PM »
Well - I put the backing plate back in the door - used Gorilla double sided tape (highly recommended!)

As shown in the photos I don't have the mount point to hold the tab - my thoughts are:
1)  It never had it from the factory and the guys on the assembly line just threw the plate into the bottom of the door
2)  The car was in an accident on the passenger side (which I know it was) and this is not the door that came stock on the car.  This theory is further supported by the sticker I found on the cardboard/paper water guard.




Either way it seemed to work out ok as long as the tab doesn't hit the window glass for some reason - right now I have about 1/4" of clearance between the two.

Thx for everyone's thoughts
Chris
« Last Edit: September 20, 2018, 06:04:00 PM by cyber104 »
1978 TA 4-Speed W72

Re: Passenger Side Backing Plate for Sport Mirrors?
« Reply #15 on: September 20, 2018, 06:00:53 PM »
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