molding a fiberglass cowl on steel hood ??

supreme84 · 09-15-2009, 02:45 PM

Hi ! I just bought a 4 inch cowl hood scoop made of fiberglass and i want to mold it to my original cutlass supreme steel hood. some peoples tells me it will crack and some tells me it can be possible using the right epoxy to bond it on and after finishing it with filler. this is a winter project so I can take the time to do it right. I would like to know if someone has done this before if it was succesful. thanks a lot and scuse my english, i'm from quebec in canada and I usually speak french !!

Ericbigmac83 · 09-15-2009, 02:45 PM

I've done it. Check out my fquick page. Link in my sig

supreme84 · 09-15-2009, 02:52 PM

it looks great !! so did you only used fiberglass do bond and mold it on ??? what products did you used ??

Ericbigmac83 · 09-15-2009, 03:00 PM

I just used the bondo that has the fiberglass hairs in it i think. i'll try to remember what its called. i just made sure it had plenty to bond to. i fiberglassed it to the top of the hood and under the hood to help it hold better. the car shakes pretty good and no cracks or anything yet. fingers crossed, but its been done for over a year now i think

McNord@6LE · 09-15-2009, 03:11 PM

I've done it too, I used screws to hold the cowel in place, fiberglassed over, & used body filler to finnish it off. Held up now for 5+ years.

supreme84 · 09-15-2009, 03:17 PM

thanks guys, a lot of people says that fiberglass and steel contracts at different rates with heat so that's why it cracks. would an epoxy be great to bond it on and after finishing it with filler or just fiberglass would be ok ?? thanks a lot for your informations !

vfntech · 09-15-2009, 03:57 PM

For the strongest bond, we recommend the use of a panel adhesive to glue the hood into place - you're local paint supply shop should offer some products, or you can find these online.
These are very strong adhesives and will eliminate any possibility of separation issues between the fiberglass and steel - which can happen - both because of the vibration of the steel and the expansion/contraction rate between the two.
This will also give you a nice clean finish.

supreme84 · 09-16-2009, 07:46 AM

ok, after bonding it into place with the panel adhesive, can i finish it with filler like normal ??? thanks.

Ericbigmac83 · 09-16-2009, 09:08 PM

i'd still fiberglass it to the hood depending on how big of a gap between the scoop and the hood you're trying to fill. don't wanna lay on a thick layer of bondo if you don't have to