I removed the exterior heater/blower cowling off the firewall before I removed the heater core assembly inside the car.. I am removing all the old sealant which is dried out. What can I use as replacement sealant?
Use 'DUM-DUM' (aka strip caulk) on the grooved area to make the initial seal, and believe it or not the stuff is actually called 'seam sealant' . There are two varieties, tube aplication type, and brush on. Brush on would be the 'more correct', but you can use the tube type, and just smear it with a wet fingertip after application. Available from most restoration supply catalogs and stores, body shop supply stores, some auto parts stores . Eastwood carries a good assortment of both the DUM-DUM and both styles of seam sealer... (http//www.eastwood.com/autobody/seam-sealer.html?SRCCODE=TXT00040&utm_medium=cpc&utm_source=bing&creative=3321477025&device=c&matchtype=b)
Is this for the fiberglass box to the firewall joint? I picked up a roll of 1/4" (as in a roll of solder) from Menards for about three bucks. It was a perfect fit in the groove. Don't forget the foam washers around the studs!
This the cover that houses the heater blower motor and covers the heater core and attaches to the firewall
DumDum also comes in strips that are similar in texture to some types of putty. It's good stuff, and pretty close to what the factory used.
Factory sprayed on some goop as well. No one puts this back. They make it too neat and is incorrect. I used flex seal spray that guy Hawks on TV. It looks factory cirrect.
I used 3M strip caulk -- got from Advance Auto parts $20. Close to the original dum dum. Be curious what people used for the foam washers??
I got mine from the chinaman at Walmart! I bought a roll of high density foam (in you choice of colors!!) for lining kitchen cabinets or just making a non skid place mats for what ever, and cut out several "washers, used spray glue to stack them together (mine took two layers) and painted them black. This was by far the best hidden job from the judges yet! ws
