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06-19-2019, 01:02 AM | #1 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,169
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Clearcoating an original paint
Hi There:
First thing first, I really don't know much about auto paint. I have a 1972 nova with original gulf green paint. No body damage but, there are 3 scratch marks all the way through the body where I can see evidence of mild surface rust. I am wondering if I can use some kind of anti rust, primer and touch up paint and then spray clear coat on the entire car. This original paint is faded in way that if you wipe the car your see the pain on your hand or cloth. So, considering limited budget, please let have your advice. Thanks
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1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
06-19-2019, 05:11 PM | #2 |
Registered User
Join Date: May 2011
Location: Anderson SC
Posts: 3,868
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Re: Clearcoating an original paint
I have shot clear over a few older paint jobs before to preserve the patina look. If it's original paint that hasn't peeled or flaked and is just chalky then you can scuff it with red scuff pads and dawn dish detergent to get rid of the layer of "dead" paint and oxidation. This is critical to getting the clear to stick and last.
You can buff a spot and have a paint shop scan the color to get a close match, and if they're really good they can tint the paint by eye to get an exact match. You can use that to blend in any repaired areas before you shoot clear. I believe that's a metallic paint, so you'll want to use a blending solvent to keep the edges of the blended areas wet so the metallic particles in the new basecoat will lay down properly. Dry edges around the blended area will stick out like a sore thumb since the metallic particles won't be oriented properly. I usually add a flattening agent to the clear so it's not 100% gloss. I don't like 100% shiny patina, but that's a personal preference. 7-8% flattener in SPI clear gives the look of well-buffed original paint. 15% gives a dull shine, and 25% gives a satin finish. This is dad's truck that was scuffed and shot with 25% flattened SPI clear. I think 15-20% would've looked better. My '63 VW shot with 7-8% flattened SPI clear. '51 GMC with 7-8% flattener.
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Project Goldilocks '66 C10 Short Fleet BBW Build '65 C10 Highly Detailed Stock Restoration Thread '78 Camaro Targa Roof Build '55 International Metal/Body/Paint Work '66 F100 Full Rotisserie Restoration '40 Packard 120 Convertible Coupe Restoration How To Restore and Detail an Original Gauge Cluster How To Detail Sand Body Panels, Edges, Corners, Etc |
06-19-2019, 06:13 PM | #3 |
Registered User
Join Date: Feb 2019
Location: Ozark, MO
Posts: 577
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Re: Clearcoating an original paint
Nima,
theastronaut gave you a great answer on the surface prep and clearcoat. You may already know this, but clear coat became mainstream in the 1980s. When clear cost was added in the 80s, the UV protection was put in the clear coat. Not in base color coat. Less expensive putting it in the clear coat than the base color coat. The surface prep IS the most important piece, and the one that is many times not given enough attention. For the rust stripes you may get a number of answers and opinions. If it were my car I would remove the loose rust, but carefully. Then I would use Rust-Mort for rust conversion, then a zinc primer before the top coat and clear coat. But you should get some great input from other Forum members. Terry |
06-19-2019, 06:17 PM | #4 |
Registered User
Join Date: Feb 2019
Location: Ozark, MO
Posts: 577
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Re: Clearcoating an original paint
Forgot one comment.
theastronaut - you are being ultra picky on your dads trucking on the flattener gloss. The paint including the clearcoat on your truck is gorgeous!!!!!!!!!!!!!! |
06-19-2019, 10:31 PM | #5 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,169
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Re: Clearcoating an original paint
Yep, all those paint look very nice and they are what I am hoping for. Thanks for the information.
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
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