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removal of expandable foam


'84 Flat-Four
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I am embarking on solving my windshield leak (84 GL wagon). After getting the dash off, I came across a bunch of expandable foam.:rolleyes: I managed to carve much of it out, but needless to say, there remains quite a bit. I want a clean area to work with...

Does anyone know off a quick simple solution. I know the "cleaner" it is sold with does a decent job (toluene i think), but does it work on dried old foam? Would 70 % or higher alcohol work? WD40 or carb cleaner...? I am trying also not to make a stinking mess, more like spot clean, slowly until its all gone... I also would like to be kind to the windshield gasket... thanks!

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If this is the yellow stuff... probably not. The can says that only mechanical methods will remove cured foam. Acetone dissolves the uncured foam according to the can.

 

You could always try whatever nasty chemicals you have around and see if there's one that will do it. I found out that gasoline dissolves white styrofoam quite well... Possibly urethane car paint thinner (sold at automotive paint stores)... since it is a urethane foam.

 

Z

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