stress fracture?

[crawlerdan]

has anyone ever heard of stress fractures on the 4runners fiberglass tops? i sanded all the "texture" off my top to paint it, and found some small cracks. the truck has only been offroad twice in its history.,(ive only owned it for a few months) any ideas?

[CTENG in KS]

Probably made with polyester resin...not the strongest stuff.  Best fix is to v-notch the fractures and fill with a nice tight weave glass cloth and some epoxy two part resin.

[WHITE_TRASH]

If you find a good sized crack be sure to drill the ends of the crack so the chances of it reoccurring are lessened.

[crawlerdan]

i fixed em all like cteng said, itll be fine, was just wondering if anyone else has experianced this

[Skinny_Pedal]

i did. but only after the 3/4ton had its way with it

[CTENG in KS]

I have never seen it on the Yota top, but I used to refinish yachts in college and the older ones were done with poly resin, saw cracking and delamination all the time.