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C3 Lose Mirror Help Needed!

twamd80driver

Well-known member
Joined
Sep 29, 2004
Messages
102
Location
Cleveland, OH
Corvette
1976 L-82 4-Speed
My drivers side sideview mirrow on my 76 will not tighten. I took the allen screw out, and the mounting plate is tight. The screw and mirror itself are in excellent shape! When I put it all together it still wobblels!!! Can someone help me git rid of this problem? As always "Thanks"
 

Brooklinite

Well-known member
Joined
Oct 20, 2006
Messages
57
Location
Ontario
Mine wobbled too. When I took the mirror and the mounting plate off it looks as though the threaded piece in the door is mounted proud of the surface of the door so that the mirror can't sit tight to it. So it's on the list of things to be fixed when it's time for paint.

In the meantime, the quick, not terribly elegant solution was to use an extra black gasket between the mirror and the door. No more wobble.
 

twamd80driver

Well-known member
Joined
Sep 29, 2004
Messages
102
Location
Cleveland, OH
Corvette
1976 L-82 4-Speed
Brooklinite,

Did you remove the black gasket between the mirror mounting plate and the door itself? Is there any tricks to that? I am worried that if I remove the mirror mounting plate to get to the rubber gasket, that there may be nuts on the backside that will fall into the door, thus requiring me to take apart the door. Can you explain what you mean by "...it looks as though the threaded piece in the door is mounted proud of the surface of the door so that the mirror can't sit tight to it."?I greatly appreciate your time.....this is driving me nuts!
 

Brooklinite

Well-known member
Joined
Oct 20, 2006
Messages
57
Location
Ontario
Sorry, I assumed that you already had the mounting plate off. Btw I also assumed that you have the same chrome mirrors on your car that I do on mine. If you have the body-colored sport mirrors I'm probably not the right one to be offering advice.

Anyway, there are two holes in the door that the mounting plate attaches to and there is some sort of a threaded piece attached (glued??) to the backside of the door. (Since my experience is limited to 1 car before you go and take the bolts right out of that mounting plate you might want to back them off a bit and wiggle them to make sure that the piece that they're screwed into is securely attached to the door so you don't have to take the door apart to retrieve it.)

On my car, it's apparent that someone has moved the threaded pieces on the backside of the door as there are two holes similar in size and spacing that have been filled which are faintly visible.

When I said mine were proud of the surface of the door I just meant that they are not flush with the outer surface which means that the mounting plate doesn't sit flat on the door. Of course, the stability of the mirror is dependent upon the bottom of the mirror being tight up against the door and in order to for that to happen the mounting plate has to sit flat on the door. Since the mounting plate is sitting higher than it should be (about 1/8")there's a gap between the bottom of the mirror and the door and that's why mine wobbled.

So, I happened to have a replacement black plastic gasket that fits between the mounting plate and the door. and since they are sort-of flared on the outer edge I thought that the extra thickness may be just enough to give the mirror the support that it needed. Which it did. Oh, and the gasket is just wedged between the mounting plate and the door, nothing remotely tricky about it.

Yours may be wobbling for a different reason, but if you've checked the mounting plate and it's ok, and the mirror is ok and you're able to tighten everything as it should then this might work for you too.

I hope this helps. If you need more clarification don't hesitate to ask. :)
 
Joined
Nov 23, 2002
Messages
1,060
Location
Motorcity USA
Corvette
1973 L-48 Coupe
My drivers side sideview mirrow on my 76 will not tighten. I took the allen screw out, and the mounting plate is tight. The screw and mirror itself are in excellent shape! When I put it all together it still wobblels!!! Can someone help me git rid of this problem? As always "Thanks"


my first thought is the black base plastic is gone or damaged.....check the taper on the screw and be sure its seating all the way into the bracket.
i installed the passenger side mirror and it has a very slight move...not enough to see when driving or anything, just enough to move a bit......make sure the screws into the body anchors are snug but dont over tighten them or they may pull through....maybe this helps.
Chas:_rock
 

joe1975

Well-known member
Joined
Feb 15, 2004
Messages
345
Location
Louisiana
Corvette
1975 Orange L-82 4 Sp.
I bought a mirror from GM And got a aftermarket one bought new screw attachment set with the wells gasket and such mine wobbles I fixed the old one, one day I'm gonna try the old one.Maybe the wobbles will be gone
 

JJS

Proud to Support the Corvette Action Center!
Joined
Feb 19, 2003
Messages
1,315
Location
Oregon
Corvette
2013 Triple Black GS, Previous cars: 1971 LT-1
This is a very common problem with the early C3's. I replaced mine with a mirror from Ecklers.
 

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