heater box/core foam

Moderator: Mod Squad

rratselad
Registered User
Posts: 22
Joined: Sat Apr 02, 2016 11:45 am

heater box/core foam

Post #1 by rratselad » Sun May 28, 2017 8:27 pm

Has anyone found any good foam to use for heater box rebuilds? I've done extensive research on Google and other sites and come up pretty much empty. I'm most concerned with the foam that makes direct contact with the heater core.

Some sources say to look at the local Lowes or HomeDepot. Unfortunately, the only temperature rated foam I found there had a rating of 180 degrees max. Since the thermostats run anywhere around 190-200, I didn't want to use that stuff. All of the other stuff at HD didn't have any rating at all. Since it's sold as weatherstrip, I'm a bit hesitant to directly expose it to high heat without a rating. Still, there are folks that say the generic, off-shelf big-box store stuff is fine.

It looks like a handful of aftermarket core suppliers give you foam with the cores, but I cannot find what they're using.

In Googling high temp foam tape, all I've come up with are some 3M products that top out at 200, but are only meant to be used at 150 degrees consistently.

Anyone have any ideas?

Thanks in advance.

mustang6
VIP Member
Posts: 1412
Joined: Thu Oct 23, 2003 11:32 pm
Location: near Tacoma, WA USA

Re: heater box/core foam

Post #2 by mustang6 » Mon May 29, 2017 3:32 am

Scott

68 Mustang 200 ci, Aussie 250-2V head, Dual Headers, Comp Cams 252H, DSII w/MSD 6AL, T-5, V8 suspension.

65 Ranchero 200 ci, late 170 head, Autolite 1101, 3.03 3 speed, Maverick 8" 4 lug rear with 3.55 gears.

rratselad
Registered User
Posts: 22
Joined: Sat Apr 02, 2016 11:45 am

Re: heater box/core foam

Post #3 by rratselad » Mon May 29, 2017 8:48 am



Unfortunately, I don't have a Mustang. I've only seen these types of kits for the more popular muscle cars. Any ideas what Scott Drake makes it out of? I cannot imagine this stuff is too special, but I cannot find what to look for.

mustang6
VIP Member
Posts: 1412
Joined: Thu Oct 23, 2003 11:32 pm
Location: near Tacoma, WA USA

Re: heater box/core foam

Post #4 by mustang6 » Wed May 31, 2017 3:54 am

Maybe they would tell you? Or sell you some material in bulk/raw?

Drake Automotive Group
Scott Drake Enterprises
Phone:702-853-2060
email: info@scottdrake.net
Scott

68 Mustang 200 ci, Aussie 250-2V head, Dual Headers, Comp Cams 252H, DSII w/MSD 6AL, T-5, V8 suspension.

65 Ranchero 200 ci, late 170 head, Autolite 1101, 3.03 3 speed, Maverick 8" 4 lug rear with 3.55 gears.

User avatar
bubba22349
Global Moderator
Posts: 8445
Joined: Sun Jan 03, 2010 4:46 pm
Location: Flagstaff, Az. 86005 near the old Route 66

Re: heater box/core foam

Post #5 by bubba22349 » Wed May 31, 2017 8:25 pm

rratselad wrote:Has anyone found any good foam to use for heater box rebuilds? I've done extensive research on Google and other sites and come up pretty much empty. I'm most concerned with the foam that makes direct contact with the heater core.

Some sources say to look at the local Lowes or HomeDepot. Unfortunately, the only temperature rated foam I found there had a rating of 180 degrees max. Since the thermostats run anywhere around 190-200, I didn't want to use that stuff. All of the other stuff at HD didn't have any rating at all. Since it's sold as weatherstrip, I'm a bit hesitant to directly expose it to high heat without a rating. Still, there are folks that say the generic, off-shelf big-box store stuff is fine.

It looks like a handful of aftermarket core suppliers give you foam with the cores, but I cannot find what they're using.

In Googling high temp foam tape, all I've come up with are some 3M products that top out at 200, but are only meant to be used at 150 degrees consistently.

Anyone have any ideas?

Thanks in advance.


I used the regular available foam to rebuild a few car and pickup heater boxes seemed to work well at the time. You could see if there is a better sorce of foam material is available from a heating and air conditioning company, a forced air furnace would likely be operating at higher temp than a car is. Good luck :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

Who is online

Users browsing this forum: No registered users and 1 guest