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Old 05-12-2017, 11:03 AM   #1
Half Crazed
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Subaru Stars Seibon Dry CF Hood wearing out?

Does anyone else here have a Seibon dry CF hood (or any other dry CF part) that's starting to show signs of wear, even though it doesn't make much sense?

I have kept my car covered in a garage during most of the hoods life, only outside of the garage when driving. I have a dry cf hood and the edges of it are flaking off which is revealing another layer of resin.

See http://imgur.com/a/mTfz5

I reached out to Seibon and they have yet to reply to me... it's been about a week now.

Has anyone else had this problem, if so, what did you do? I'm thinking of taking it to a body shop for repair, but I want some sort of idea as to what the proper "fix" is instead of putting full trust in a body shop.

Thanks!
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Old 05-12-2017, 11:15 AM   #2
Z3RO
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Seems like you need to re-clear it. I wouldnt hold my breath waiting for seibon to get back at you.
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Old 05-12-2017, 11:18 AM   #3
Half Crazed
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Seems like you need to re-clear it. I wouldnt hold my breath waiting for seibon to get back at you.
This feel thicker than a clear coat though - what about the smoothness?

Also, interestingly enough, a few months ago I had reached out to Seibon asking how heavy the dry cf hatch was - they responded within a couple of days... smh.
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Old 05-12-2017, 11:29 AM   #4
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Dry carbon, real dry carbon, isn't cleared over. The way the resin is done is different, and pretty damn expensive. You'll notice real dry carbon has pinholes and some other imperfections, and you can feel the fiber on the surface.

Seibon hasn't invested in that kind of process, what you have is probably fewer layers of carbon to lighten the hood up. There isn't a clearcoat on top, it is the resin side of the carbon sheet. Have a shop sand it down and get a clearcoat, hood will look fine again.
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Old 05-12-2017, 11:47 AM   #5
Half Crazed
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Dry carbon, real dry carbon, isn't cleared over. The way the resin is done is different, and pretty damn expensive. You'll notice real dry carbon has pinholes and some other imperfections, and you can feel the fiber on the surface.

Seibon hasn't invested in that kind of process, what you have is probably fewer layers of carbon to lighten the hood up. There isn't a clearcoat on top, it is the resin side of the carbon sheet. Have a shop sand it down and get a clearcoat, hood will look fine again.
That's kind of what I thought as well, thank you. It's a shame because I always looked up to Seibon as having some quality stuff, but seeing this after only a few years is a little frustrating... it's still better than the stock 50lb hood, at least.
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Old 05-17-2017, 08:59 PM   #6
181stLeader
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Originally Posted by Stickers View Post
Dry carbon, real dry carbon, isn't cleared over. The way the resin is done is different, and pretty damn expensive. You'll notice real dry carbon has pinholes and some other imperfections, and you can feel the fiber on the surface.

Seibon hasn't invested in that kind of process, what you have is probably fewer layers of carbon to lighten the hood up. There isn't a clearcoat on top, it is the resin side of the carbon sheet. Have a shop sand it down and get a clearcoat, hood will look fine again.
Dry carbon is made with prepreg(carbon fabric pre impregnated with the optimal amount of resin. Wet carbon is done in other methods like wet layup or resin infusion. Most prepreg requires an autoclave cure. That is what makes it expensive. There are a lot of consumables when making autoclave composites as well as the molds must be made from high temp materials to survive in the autoclave(that is expensive as well).
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Old 05-17-2017, 09:03 PM   #7
181stLeader
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Also most of Seibon parts are pure junk if you ask me, it's one layer of carbon fiber over fiberglass, they also use cheap polyester resin(that's why it yellows so fast). The aluminim hoods for the GC and GD weigh less than the Seibon junk, and have perfect fitment.

Most people don't have the slightest clue about the process and materials about carbon fiber.
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