68 Mustang hood scoop fix

[Cstrom]

Putting this 69 hood scoop on my 68 Mustang. I've never prepped fiberglass before. If I scuff it down, what grit? 80? Can I SPI epoxy right over it then or does it need a gel coat? Also have one stud hole that's loose/stripped, it's a very coarse thread pitch I wouldn't imagine I could find a tap for. Any slick fixes for that? Otherwise I'll prob just epoxy it in once it's ready.

 

[RenewAP]

The coarsest i would use is 120 on fiberglass, and once I was getting close to the gel coat I would go with a finer grit (180 / 220 ) You can epoxy right on the gel coat if it's in good condition. 2 part epoxy will certainly work for the stud, but others on the forum will know the best possible product and procedure .

 

[Cstrom]

If In a few small spots, the gel coat is gone (there are a few on edges already) will the epoxy hold up?

 

[dhutton01]

Epoxy is all you need. Two coats, preferably three. No gel coat needed.

 

[Chris_Hamilton]

If In a few small spots, the gel coat is gone (there are a few on edges already) will the epoxy hold up?

It's far superior to gel coat so no worries as to if it will hold up. Several members here do high end Vettes and will strip to bare fiberglass and only use epoxy. No gel coat at all. It is a superior product.