[porschetub]

Originally Posted by 962porsche

there is never a need to let the composite parts sit before you do the install on a car .
for the most part there are 3 types of resins used for composite meterials they are polyester , vinylester and epoxy resins .
they all are at full cure with in 48 hours after they were in there liquid state .
so it's a real good bet by the time is boxed and shipped to you it's well cured .
because the expansion and contraction rates are not the same between composite and steel parts it never matters if you bake them in the sun or keep them cool . as long as the two different materials are at the same temp when you install them you will be just fine .
why you see cracks starting on the panels were people have installed composite parts on a steel body panel is just from bad install work .
it could be from to many reasons to list so i will not list all the reasons why they will start to crack and delam off steel .
but you want to always use a good quality bonding adhasive that is made for bonding composite to steel .

Not sure about the 48hr cure? worked in polyester for years won't send out a product that green,some of the 911 panels I have seen on this forum make me cry/laugh the way they are made.
The clever guys keep them in the moulds for longer and release them after a full cure.
My comments were made @ the panels and not the final attachment to the car thats just another can of worms as you mentioned