Fiberglass or ABS?

[sixty9santa]

I've been have all sorts or ideas floating in my head for the last little while regarding what to do to my '76 2 door Granada.
Since I have plans on modifying the 302 to about 400hp, I've been thinking ram air.
Out of the many hood scoops out there, the Mustang Mach 1 hood scoop is by far my favorite followed the the Boss 429 scoop.
Now since I'm not a big fan of the bolt on style scoops, I've found both styles in bond-on/blend-in styles.
Fiberglass is very well known for cracks and being in a cold climate (Montreal, PQ) I know that ABS is the better choice material wise.
My question now is: are there any issues bonding it to the hood compared to fiberglass?

[Jeff Roblin]

I'm sure you've seen this thread on hood scoops......I don't really know what I'd recommend.

Where are you exactly in Montreal? I keep forgetting to get your contact info. I'm in Montreal almost monthly on business. I usually stay downtown and the plant is in St Laurent.

monarch76.proboards105.com/index.cgi?board=exterior&action=display&thread=1174059484

[sixty9santa]

Well after getting some advice from a buddy of mine that works at an auto body shop, I'll go with the bolt on types.

[tonytrolle]

fiberglass for me but then I would fix it myself

[protouring442]

Definitely not ABS! ABS is pretty much the same stuff they make Frito's bags from and they share a common trait. Both will split very easily once cracked!

A bolt on scoop can be bonded using a type of body-glue made to bond fiberglass to steel, but the best way is labor intensive, but not that "hard."

Make a mold of your existing hood, just the top. Brace the mold with wood (2X4s work well). Then, strip the steel from the frame of the hood. Lay up a fiberglass hood skin on your mold, then (using the glue) glue it to your steel frame. Now, bond on your favorite fiberglass scoop, glass to glass!

The best resin to use will be epoxy resin, as sold by West Systems. It's pretty easy to work with, and it gives better and stronger results.

Shiny Side Up!
Bill