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12/29/12 11:39pm - Original Message: 'Rivets Showing Thru My Paint...'
Ed's71Corvette
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Vette(s):
1971 Corvette Stingray - 350 cu - Automatic 3 speed.

Joined: 9/1/2012
Posts: 12
Hi Everyone,
I bought my 1971 Corvette this year from a Corvette Restoration shop. I noticed there were Rivet bumps along the front nose area just below the hood, he said that the majority of the C3 Corvettes have this issue! Is this correct?...The paint job is 6 years old or older, so I'm guessing it was a low brow paint job done and that's why the rivets are showing at different angles....What's your suggestions? Thanks, Ed 


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12/30/12 8:16am - Reply: 'Re: Rivets Showing Thru My Paint...'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
Ed, I have several friends with early C3s that have original paint and they have rivets showing through.  I know it is a common problem in the early c3s and have been told that they will eventually show through even after a repaint.  Im no authority, some here are but I do know that your problem is very common.  The front rubber bumper C3s, 73-82 did not have that problem but replaced the rivet problem with the urethane bumper getting wavy after time.

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12/30/12 9:54am - Reply: 'Re: Rivets Showing Thru My Paint...'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
It is a common problem, tho not all will have it. The issue is the rivets corroding, and pushing up thru the fiberglass and paint. There is a metal reinforcement bar across the front, in front of the hood. That bar is first riveted to a bonding strip, and then the bonding strip/reinforcement is bonded to the upper surround. Over time, moisture gets in there, and the rivets and the metal reinforcement will start to corrode....this causes the corrosion to force it's way thru the body and paint.
Just sanding the paint down, and re-painting will NOT "fix" this. The only real fix is to remove the reinforcement bar, re-rivet, and then re-bond it back to the body....not an easy task.
Some have just drilled thru the rivets, and then filled in the holes. This is the most common solution, but it also leaves the drilled/filled holes to show thru eventually. It's a vicious cycle.

The real point is, this is not someone's half baked attempt at body repair...it is a fairly common dilemma.


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Joel Adams
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12/30/12 12:34pm - Reply: 'Re: Rivets Showing Thru My Paint...'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395
Up here in the North East we see it alot. as joel stated not the body mans fault. Remember GM never intended these cars to be around so long. When looking for an older C3 that is one thing I would be checking for, for originality. I'd leave it myself unless they are broken right out. Your call let us know what you decide. ebo

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11/22/13 12:02pm - Reply: 'Re: Rivets Showing Thru My Paint...'
rmendoza
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Colorado Springs, CO - USA

Vette(s):
'68 (2), '75 (2), '86, '90, '98 (2), '06 (2), '10, '12 GS, '82 Collector Edition, '03, '90 C4 ZR-1

Joined: 10/11/2013
Posts: 108
I have a '68 Rally Red Roadster that was repainted in 1999 76XXX original miles.  Like your subject line I have one bump in the paint about the size of a quarter.  I had head the cause before but all the guys chimming in on your entry just confirms it.  I was also at a get together last week and there were also 2 other '68s there and you could see the rivets to varying degrees.
 
It's a shame because the car has been garage kept and only has 9,000 miles on it since it was painted 13 yrs ago and is shiny and deep.
 
My painter friend said essentially that same as one person commented.  Drill them out, clean the area of all  contamination seal holes with top line adhesive, remember we have adhesives now that weren't even thought of back them, and then do the body work and paint.  The only other option is to buy a door to door new front end ($2,000-$4,500 depending on vendor) and repaint.
 
I bought the car 3 months ago with the flaw, because of the condition of the rest of the car.  I made a Car Show Storyboard calling it a Survivor and will live with it through 2014.  After keeping it stock for a year then next year I'll have it fixed and repainted Corvette Torch Red.  I've had 2-1998s, 2010, and a 2012 Grand Sport all Torch Red and I'm addicted to that color.
 
Like one person said "GM didn't intent for them to be around as long as they have".  Just sold my Grand Sport to make room for the new '68 as my wife has me on a 2 corvette diet.  The GS had all the bells and whistles, but honestly I'm enjoying having something that I can get under the hood with a screwdriver or  actually change things.
 
I get just as many thumbs up, wave and smiles with the '68.  I'll just enjoy it for the 45 yr old sports car that it is...................hope you do to.
 


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God  Bless, rick

'75 Steel Blue Stingray Convertible
'90 Bright Red C4 ZR-1
 
  
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12/14/13 8:08pm - Reply: 'Re: Rivets Showing Thru My Paint...'
Chase71
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Elkridge, MD - USA

Vette(s):
1971 convertible

Joined: 5/25/2012
Posts: 43
The Black Widow is in the paint shop and I just saw this very issues last week. My painter mentioned everything above and is fixing it by drilling it out and repairing the metal bar underneath and resealing it before finishing the body work. Someone tried to fix it before and did a very bad job. They used body filler and the paint callaposed around and in the holes. Very pain the in A$$ work to fix it, but he's done it many times before so I have confidence in his abilities. We'll see if it comes back one day but hopefully not for a LONG time! 😄😄

|UPDATED|12/14/2013 6:08:45 PM (AZT)|/UPDATED|


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12/15/13 10:52am - Reply: 'Re: Rivets Showing Thru My Paint...'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395
Chase71 said: The Black Widow is in the paint shop and I just saw this very issues last week. My painter mentioned everything above and is fixing it by drilling it out and repairing the metal bar underneath and resealing it before finishing the body work. Someone tried to fix it before and did a very bad job. They used body filler and the paint callaposed around and in the holes. Very pain the in A$$ work to fix it, but he's done it many times before so I have confidence in his abilities. We'll see if it comes back one day but hopefully not for a LONG time! 😄😄




OFF TOPIC....... You still owe me a Ride in The Black Widow!
ebo


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LIFETIME MEMBER 151
Evil Smileebo
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12/19/13 1:11am - Reply: 'Re: Rivets Showing Thru My Paint...'
HighDesertDave
Former Member
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Carson City, NV - USA

Vette(s):
Numbers matching 1972 350 4 speed, silver pewter body with blue interior

Joined: 12/4/2013
Posts: 239
I have the rivet bumps. When you say reseal....what exactly are you talking about? Filling the drilled out holes with glass/resin or pull the metal support off from underneath, stripping and sealing it or?

Thanks,
Dave


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My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

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12/20/13 1:10am - Reply: 'Re: Rivets Showing Thru My Paint...'
tb2k82ce Lifetime Member
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Lemon Grove, CA - USA

Vette(s):
1982 C3 Collectors Edition 44000 miles, sat in the sun most of it's life, My wife purchased it for me for fathers day in 2007 from her girl friend that had it for 19 years. It is on the road again. I'm retired but it is now my daily driver.

Joined: 10/17/2007
Posts: 2007
I have one also.  I was going to have  Corvette restorer shop fix mine because I only have one that is showing.

He said would show me how to do it but while he was going through it I figured it would cost me all much as much as letting him do it after I purchased what I needed.  I do not need all of that body work stuff just to fix one small hole. 

If know one provides an answer before the week end I will go ask him what he does to prevent it from coming back.  I would be he uses something like "Naval Jelly" to kill the rust and then the other fiberglass body stuff to build up the area.  He uses a special fiberglass sealer before he primes the area.


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12/20/13 1:04pm - Reply: 'Re: Rivets Showing Thru My Paint...'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
Once the corroded rivets have been drilled out, they problem should not resurface(no pun intended) again.The real problem is filling the holes to where THEY won't show thru eventually. Bondo won't fix it, as it will shrink over time, as do other body fillers. Fiberglass is the only way to make sure the holes will not return, but even then, it has to be properly done.
Not real sure about what kind a "sealer" was mentioned, but I assume they were talking about sealing the metal support from future rust issues.

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Joel Adams
C3VR Lifetime Member #56    
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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12/20/13 4:01pm - Reply: 'Re: Rivets Showing Thru My Paint...'
HighDesertDave
Former Member
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Carson City, NV - USA

Vette(s):
Numbers matching 1972 350 4 speed, silver pewter body with blue interior

Joined: 12/4/2013
Posts: 239
I have about 8 bumps so far. After reading and going over the step by step pics on another forum (sorry) I have decided to just do it once and do it right. I will pop the rivet heads off, drop the metal header and probably use a heat gun to pry the bonding strip off the underside of the nose. paint and glue everything back together. Its not that bad. These are aluminum rivets. I think removing the bonding strip will be the most work. The post I read said it took only 2 hours to pop the rivets and remove the strip. Not bad. Of course there are a couple 3 hours in pulling the lamps out and front nose parts for access. As far as doing only 1...well, if you got one, you will get more with time.
Dave

I consider this bonding time with my new car - yuk yuk yuk


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My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

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