I have taken the back side panels out of my car to do a little sound adjustment.Do you think it would hurt or help to fill the inner fender cavity on both sides with that spray expandible foam. I am taking the rear seat out to perform speaker cabinet surgury. I was gona also spray some of the foam in to joints of the cabinet where the boards come together. It should keep some of the road noise out and help inside the cabinet?? what yall think..
I cant see what it would hurt unless some time in the future you have to do some rust repair. I'd clean and paint the bottom area just to make sure it dont.
i had mentioned this to a friend of mine that has a couple of show cars in mags. and he said the problem with that is the flexing of the car breakes it down and makes a lot of dust. that is the "old stuff", maybe they have something more flexable now. i put the "white shipping peanuts" in mine.. J.H.O....frank...
STOP!! WAIT BEFORE YOU USE expandable foam. There are several BIG reasons to consider. First of which is that it is very powerful and can warp the sheet metal due to the pressure of expansion and it creates a lot of heat when it is hardening, trust me on this one. I have used expandable foam extensively and use it sparingly for sound deadening and make sure there is an opening for excess material to "vent" if you decide to use it. Second, if you ever need to weld to the area where you have used the foam, it is VERY Flamable. Third, it traps moisture and can aid in the formation of rust. Four, well you get the point. There are several different grades of foam available at marine centers and they can direct you to the right "weight" of foam for your project, and try to avoid the cheap foam in a can types. It definitely has many uses even as a sound deadener but use caution and common sense.
My entire floorpans and those wheelwell areas were sprayed with bedliner. I then lined the floor with flexible aluminum backed underlayment for insulation and sound deadening. I can tell quite a difference in the lack of tire noise from doing this. Seth
That is a hell of an idea! I think I'll do that with mine. The ground up resto-mod is going to commence some time in the next month. How much did that run you$$??
Costs: The bedliner was sprayed in there by my body man so he had the equipment. I think the Rhino-Liner was about $45. I used 2 large rolls of underlayment that I bought at the Charlotte Swap Meet for about $35. I cut it to fit in the fender well areas behind the rear seat panels using 3M spray adhesive-$10-$15 I think. After that I just installed the carpet. Seth
I like the packing peanuts! I have them everywhere from our business and they are very lightweight. The bedliner and accoustical padding are very heavy! This will effect performance and fuel economy. Seems to me that you could even use bubble wrap or well wrapped fiberglass insulation in those large open areas. Great ideas! Dave
I install things like that for a living I would use fiberglass not foam. them use a stuffing to damper the road noise. the fiberglass is easer to mold into a custum box and is easer to get out just lay down some celiphane on the car and be carefull.
DON'T DO IT JIM!!!!! I had a sleeper boot between the cab and sleeper on a truck I used to own that developed a hole in it and leaked. A friend of mine told me to fill the gap between the cab and sleeper with the expanding foam, he said it woud conform to the boot and remain flexable enough that it would syop the leak and wouldn't fall out. All was fine for a day or two....then the stuff started squeeking! Every bump, every rough place in the road, squeek, squeek, squeek. I stopped on the side of the road and ripped the stuff off!! The stuff is fine in a house, but I'll never use in a moving vehicle again!!!
