ThumperAC said:
I am heading to Lowe's this weekend to look into expanding foam. Thanks for the advice.
Before you destroy the car with the foam, try and locate the source of the vibrating and or rattling.
Foam works good, but it is by far the worst product to use in a car environment, specifically one that is driven a lot. Works great for SPL vehicles though, b/c the vehicle is been designed to make noise, and looks don't really matter much in a spl ride.
The foam can also destroy the car very easily, I would be very very careful using the stuff.
BTW, dynamat, applied imporperly will not cure the rattles. Fist you must locate the rattles, one by one. Cure them one by one also. Dynamat does not work too well on large sufaces that vibrate because, all it really does is add weight and a slight amount of strength. So the surface area will be proportional to the amount of dynamat need.
Large areas that rattle will require different methods of of bracing/dampening to prevent them from rattling. This is why it is important to isolate each and every rattle.
Good luck.