View Full Version : Heater core

08-08-2006, 10:26 PM
Since the dash is out of my lark, i figured its time to replace the squreeeeaaachllllllyyy blower motor and i took the core out of the housing as well to clean the debris off and flush it out. now the question, What kind of material should be used to seal the core back in the housing. it looks like it could have been wax....or some type of strip type caulk.

08-08-2006, 10:32 PM
If you go to the parts store and ask for Dumm-dumm, you're not talking about the proprietor, your talking about 3M ribbon caulk. The Studebaker shop manual calls it Dumm-dumm but only mechanics with twill bibs know it by that name.

Brad Johnson
Pine Grove Mills, Pa.
33 Rockne 10
51 Commander Starlight
53 Commander Starlight
previously: 63 Cruiser, 62 Regal VI, 60 VI convertible, 50 LandCruiser

08-08-2006, 10:38 PM
I have a 20 pound block of the real Studebaker stuff from SASCO. It's a tad hard after 50 years though.

Studebaker On The Net
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Arnold Md.
64 Daytona HT
63 R2 4 speed GT Hawk
63 GT Hawk
63 Avanti R1/AC
63 Avanti R2/4 speed
62 Lark 2 door
62 GT(parts car)
60 Lark convert
60 Hawk
56 Power Hawk/4 speed/289
52 Starliner
51 Commander

08-09-2006, 02:41 PM
quote:Originally posted by JDP

It's a tad hard after 50 years though.

Stop bragging John <G,G>!
Seriously, will the stuff soften up with some heat or the application of a little solvent?

Gary L.
Wappinger, NY
1954 Commander Starliner (restomod)
1959 DeLuxe pickup (restomod)

08-11-2006, 01:22 PM
Thanks thats what I first thought to use (dumm-dumm) i was hesitant to call it that because i thought that was a local term, guess not? Also I wasnt sure if it would take the heat? I'll give it a try its not that hard to get back out should there be a problem

08-11-2006, 02:48 PM
We call it dum-dum way up here in the Great White North too, eh?


63 Lark 2dr Sedan