Roof Skin Install? - Chevelle Tech

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post #1 of 8 (permalink) Old Nov 21st, 12, 8:40 AM Thread Starter
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Levi
 
Join Date: Jan 2000
Location: Fairview, KS
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Roof Skin Install?

You will have to forgive me amateur searching skills... I seem to remember a while back someone had a nice how to article with detailed pictures of a roof skin replacement on a 68-72 Chevelle, but I cant manage to find it again. My roof skin is due in next week, and i am hoping to dig right in. I assume it will be pretty straight forward once the new panel is in front of me, but i would like to have a good idea what i am getting in to. Thanks,

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post #2 of 8 (permalink) Old Nov 21st, 12, 9:37 AM
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Chevelle Doctor
 
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Re: Roof Skin Install?

No pics, but I can tell you what to look for.
A. Melt all the lead out of the front and rear roof seams with a propane torch. This will exspose all the welds you need to drill and cut.
B. Dig all the old seam sealer out of the drip rails. There's a ton of spot welds along here. Be careful cutting them, as It's easy to go through the bottom of the drip rail. I use a cutoff wheel and grind the weld off.
C. Drill all the spot welds out from the front and rear window openings.
D. Seperate the roof from the shell of the car.
E. The sides of the roof panel is usually about 1/8 too wide on the lip where it goes along the drip rail. Compare the new panel to the old and trim as required.
F. When you put the roof on, put the front on first, then work the sides into the drip rails, you'll need a couple guys and some flat screwdrivers to work it in place.
G. To make sure you have the roof panel far enough to the rear, hold your rear window trim up to the roof/ quarter and see how it fits.
H. Remove the panel, grind the weld areas clean of ecoat and galvanizing, punch or drill your holes to plugweld, and grind the shell areas clean where you're going to weld.
I. I prefer to glue the sides, and weld the front and back. It's hard to mig weld the sides.
J. If you're putting on quarters, don't weld the roof to the old ones.

I'll see if I have any pics I can post..

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post #3 of 8 (permalink) Old Nov 21st, 12, 10:04 AM
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Scott
 
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Re: Roof Skin Install?

I install roof skins alone and have a setup that hangs the skin over the car. I glue the sides, front and rear and just weld the sails and A-pillars. Adhesive will not fail on the front and rear but some are uncomfortable with it and spot weld. If you don't have a unispotter, the weld on molding studs can still be used instead of the screw in type. A box of 500 is less than $20. Just drill a hole, insert the stud and tack the rear. The whole job is a cake walk. Even the screw in type should have the backs tacked.
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post #4 of 8 (permalink) Old Nov 22nd, 12, 10:21 PM
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Rob
 
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Re: Roof Skin Install?

why are you replacing? due to common rust or something fell on it?. if rusty than you will have to take car of that,if supports damged then prefit to fit the pre accident damage,i do mine a little different than others.in short i cut it off.trial fit,i glue it all and them weld bond the roof on on with my spot welder,that way it is corrosion protected and welded like the factory.dont forget the roof braces,guys use seam sealer there,i use flex foam.most dont have a spot welder so then glue the sides weld thru the front and rear,i use copper weld.when drilling the spot welds on removal there is no reason to go all the way through the under panel.removing the panel from the roof braces is just a matter of a small torch to heat to release.
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post #5 of 8 (permalink) Old Nov 22nd, 12, 10:51 PM
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Levon
 
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Re: Roof Skin Install?

I did mine.

With some help from others here, here is that thread:
Roof Panel 70-72 Coupe

http://www.chevelles.com/forums/show....php?t=3044377

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post #6 of 8 (permalink) Old Nov 27th, 12, 1:20 PM Thread Starter
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Levi
 
Join Date: Jan 2000
Location: Fairview, KS
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Re: Roof Skin Install?

Quote:
Originally Posted by chevelle hunter View Post
why are you replacing? due to common rust or something fell on it?. if rusty than you will have to take car of that,if supports damged then prefit to fit the pre accident damage,i do mine a little different than others.in short i cut it off.trial fit,i glue it all and them weld bond the roof on on with my spot welder,that way it is corrosion protected and welded like the factory.dont forget the roof braces,guys use seam sealer there,i use flex foam.most dont have a spot welder so then glue the sides weld thru the front and rear,i use copper weld.when drilling the spot welds on removal there is no reason to go all the way through the under panel.removing the panel from the roof braces is just a matter of a small torch to heat to release.
The roof is being replaced due to some very shoddy work from a previous owner. Near as i can tell the roof had some rust spots in it and they tried to just patch them in and cover up with body filler, it also has a bunch of pin holes of rust in it.

I expect to get my skin on a truck tomorrow, where do i find the trim studs? Thanks again guys.

1970 SS (cant prove it though) 427 4-speed
1971 Clone, 350 daily driver.
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post #7 of 8 (permalink) Old Nov 27th, 12, 6:31 PM
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John
 
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Re: Roof Skin Install?

Lets hope Scott (Raven1) has some of those trim studs 500 in a box left over for us to purchase? I need for front and rear trim. Aren't they stainless steel?
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post #8 of 8 (permalink) Old Nov 29th, 12, 3:19 PM
Ronald
 
Join Date: Aug 2012
Location: Mulino, Oregon
Posts: 8
Re: Roof Skin Install?

Maybe I can get in on that stud deal too. I have a new skin for my 69 Elky sitting in a box in my garage. It also is in need of some studs. I'll be putting it on my car as soon as the weather warms up and I blast and paint the underlaying structure.

Ron

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