The truth about "BUMPS"
Thread Starter
Instructor
Joined: Aug 2004
Posts: 144
Likes: 0
From: Harrisburg PA
big_G
That is cool. I also purchased my '68 in June of '74
I still know nothing about my car's history between '68 and '74. It had 31,000 miles on when I bought it and now has 65,000. I always wonder if I will ever see anyone that previously owned the car. There were 3 owners before me.
Thanks for the advice about the bumps. I like the heat gun idea.I use a heat gun now for electrical work so I know what you mean by setting it "just below sun".
P.S...I got my first Vette (a 68 Vert which I still have) in June of '74. Way cool!
I still know nothing about my car's history between '68 and '74. It had 31,000 miles on when I bought it and now has 65,000. I always wonder if I will ever see anyone that previously owned the car. There were 3 owners before me.
Thanks for the advice about the bumps. I like the heat gun idea.I use a heat gun now for electrical work so I know what you mean by setting it "just below sun".
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
Originally Posted by Tracker
big_G
Thanks for the advice about the bumps. I like the heat gun idea.I use a heat gun now for electrical work so I know what you mean by setting it "just below sun".
Thanks for the advice about the bumps. I like the heat gun idea.I use a heat gun now for electrical work so I know what you mean by setting it "just below sun".
The rust has to be cut out and re-glassed.
Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Originally Posted by Ironcross
Except it wont work and a waste of time. The rust has to be cut out and re-glassed.
The rust has to be cut out and re-glassed.
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
Originally Posted by big_G
If you will look back at my post # 4 I briefly discussed the procedure to remedy the bumps. Even posted pics on this thread of the removed/rusted part prior to re-work.
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
Originally Posted by big_G
Those are from the original rivets used to bond the headlamp sub-assembly together. Not supposed to be visible, but rust causes distress to the structure. I just repaired this problem on a customers '69....
I have a friend that does quite a bit of restoration work on the C3's and he bonds these things in place. After removal, blasting and primering them, he bonds them in using rivets to hold them in place and then removes the rivets. Have you heard anything about doing it this way. It of course eliminates any chance of the rivets causing problems in the future.
The adhesive he uses is also used to glue metal panels on vehicles. It significantly reduces the finish body work associated with welding panels on.
GUSTO
Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Like I mentioned earlier, after the bumps have been leveled, the support has been repaired and epoxy primed, the under-side of the surround has been prepped, I use 3-M 8219 panel adhesive to glue the support back in place. I prefer to use about 20 clamps (the squeeze type) as opposed to temporary rivets, which may show up as shrinkage dimples later on. Very little leveling on the outer surface will be needed with this method, as the bumps have been previously leveled, and no holes drilled through the surround.
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Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
I think you missed something in the translation.....The support bar MUST be removed in order for the fiberglass bumps to return to the original position with added heat. Only after the bumps are leveled and the support bar and surround underside are prepped can the bar be bonded back in place.
Pro
Joined: Feb 2005
Posts: 571
Likes: 0
From: Harleysville pa
Originally Posted by big_G
I use a commercial heat gun set on "Just below sun" to heat the bumps. Using Way cool!
Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Originally Posted by mpett1
Big G I Love your garage!!!!!!!!!!!!!!! I would love to have that at my house. Do you run your business out of there?
