MobileGreg

I have a 79 L82 and just got a new Flex Fiberglass front bumper cover to replace the old worn out urethane cover. It is a bit short on the sides and needs to be built up some and while I'm at it, I think I'm going to go ahead and fill the gap between the cover and body. I need to know what type of filler and any special prep to be done so it wont crack. I'm new to working on fiberglass cars.

DUB

I wish I could with 100% certainty advise you on what to use. Due to these 'flex' bumpers are generally really thin....and also flexible to a point...I have no clue on what to apply on it that would adhere and not possibly pop off due to the flexing of the bumper..

Now...if the bumpers were the rigid fiberglass bumpers. I do know what to use on it....BUT...like I wrote above ...I can not guarantee that what I use on the rigid fiberglass bumpers would work on the 'flex' bumpers ...because I do not install the flex bumpers.

DUB

MobileGreg

When I asked the manufacturer of the flex cover what type of filler to use to build it up to fit on the sides he said "any polyester base resin or body fillers will work." That being said, since I'm not familiar with working with fiberglass, what would be the go to filler. Again, I may try to fill the gap, but also with the concern of possible "flex" in the cover will just do the build-up where needed and leave the gap as original.

DUB

When I do the rigid bumpers and get them fitted to the body. I use Vette Panel Adhesive.

DUB

MobileGreg

Thanks Dub. I wasn't sure about who made a product that was correct as a google search gave me varying results. Also, I believe I will keep the factory seam instead of filling it to prevent the chance of a crack developing since the cover and body are different types of fiberglass and may shrink and expand at different rates. A first fit of the cover is not too bad and should only have to do minor filling on the sides to fit to the body.