458 Repainting rear diffuser

Basically you would need to sand, prime, sand, paint, sand and paint again for more durability. Then wet sand and buff all with a gloss enamel paint. You should be good to go. Rust oleum makes a good paint for plastic


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I have the same situation. I believe both you and I drive the 458s harrrrrrd. I think of my damaged diffuser as a 'badge of honor'...

I hear it's not that hard to fix. Someone quoted me about $2500 here in NorCal recently.

 

I think it was one of the local Ferrari dealers.

thx for the links

 

That diffuser is not brand new. Check the last pic in the listing.

 

Simple fiberglass DIY repair; sand smooth, prime, paint. I intend to refinish my F8's front and rear diffusers over the winter. No big deal.

 

Yes I believe I have the right paint. I'll snap a picture of it when I get home. I had the issues with the front of my F12. The area where the vents open to cool the brakes. I sanded it down really with really fine sand paper than taped it all off real good and then hit it with a coat of paint, let it dry, then hit it again. Turned out ok.

 

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I was told by a retired Ferrari tech last week to lightly sand around the rounded edges of the bottom of the fin then put a coat of clear finger nail polish on the area. Then I assume paint over the area but I’m not sure what kind of paint.


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Another consideration would be to have it wrapped in satin black PPF, then it’s protected as well.

BTW, a black sharpie does well for small touch ups!

 

After the first scrape I put small sacrificial edge seal strips on mine. The u channel pinchweld type. They stay on during a track day and if I get home and one is missing I know it was sacrificed to a great cause.

 

Edge seal strips? Can you elaborate on that please.

 

Sure. Took me a few goes to find the best ones. You only need to cut off a section of 3-4inches and then press fit onto each diffuser fin.
Search ebay for “edge seal pinch weld”


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Just finished sanding, marking with a black Sharpie, and then I’ll ‘seal’ with clear fingernail polish. I purchased these edge strips as well. Seller on eBay was ‘caiyanyantiger (89004),$23.11 for a 15ft strip. Thanks for the tips guys!


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Just a clarification. When I said it took me a while to find the right one, I meant it took me a while to find the right *style*. It is the pinch weld style that you need. You don’t need to buy from the seller in the picture, you can buy from anyone who sells that style. Some sell it in a couple of different section widths so just make sure you get the width that fits the diffuser fin. I think it is just the larger of the two options from memory.

 

Thank you. The info is greatly appreciated.

 

Will take some and post when I get back on the weekend.

 

Pics as requested


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