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      09-11-2016, 05:01 PM   #1
Bimmer-M3
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Restore clear coat on diffuser

My carbon fiber diffuser (Vorsteiner Type II) clear coat is fading and showing sign of age. What is the best way to restore the clear coat and get it back shiny?

Would compound or polisher fix the clear coat?
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      09-12-2016, 01:02 AM   #2
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Anyone?
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      09-12-2016, 03:05 AM   #3
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I'm no expert but my guess is that the clear epoxy is starting to weather/is sun-affected. A buff back with a fine compound or a polish with some small amount of cut will restore the shine. But you are likely to find that the condition will return as the deterioration will continue, or even speed of from now .... sorry to say.
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      09-12-2016, 10:04 AM   #4
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Try a cut and polish then coat it with opticoat or something to slow down oxidation, however, as JJH said, it'll come back eventually. You may have to bite the bullet and have it re cleared.
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      09-12-2016, 11:02 AM   #5
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It's basically the same as the clearcoat on painted surface, so I suspect you'll want to have a body shop respray the clearcoat.
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      09-12-2016, 11:50 AM   #6
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Had a local guy re-clear some CF for me. I'll let you know how it came out and ask him what he did. I'm assuming just sand, re-clear.
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      09-12-2016, 01:05 PM   #7
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Quote:
Originally Posted by SSJTrunks523 View Post
I'm assuming just sand, re-clear.

That's what I did years ago on a carbon fibre piece of an airbox (prior car). There was a big scuff on the clearcoat so I just took some sandpaper to rough up the surface, then sprayed several light coats of clear. I had to wetsand it after the clear had fully dried, then worked my way up to milder and milder sandpaper.

It turned out fine since I took my time, but it did take quite a while and involved a lot of waiting. For some context, this piece was only about a square foot and was relatively flat. Doing it on something huge and complicated like a diffuser would be a big undertaking. I think I'd rather just pay for someone else to do it unless I literally had nothing to do all weekend.
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      09-12-2016, 06:14 PM   #8
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Thanks for the inputs. I was thinking to wet sand it and apply clear coat myself but I am no professional so I don't know how well it will become.
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