Author Topic: Heater box sealing  (Read 1171 times)

0 Members and 1 Guest are viewing this topic.

Offline Norm340

  • Bone Stock
  • **
  • Posts: 19
  • PSI: 0
  • Boost n00b
    • View Profile
Heater box sealing
« on: June 16 2019, 03:39:17 PM »
I'm looking for what would be best to use to seal the outside top of the heater/AC box at the firewall.
OEM looked like a thick tar that has harden over the years.
Kinda thought of maybe using a black seam sealer and or Windshield sealant or something similar?
Any ideas would be appreciated.


Thanks   

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6362
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: Heater box sealing
« Reply #1 on: June 16 2019, 04:42:29 PM »
Sounds alot like butyl tape that glazers use. I have forgotten what the specific automotive version is called.
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6362
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: Heater box sealing
« Reply #2 on: June 16 2019, 04:44:07 PM »
"3M strip caulk " might work?
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline Norm340

  • Bone Stock
  • **
  • Posts: 19
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Heater box sealing
« Reply #3 on: June 16 2019, 06:57:35 PM »
"3M strip caulk " might work?


I was going to use that strip caulk for the lower part of the box.


But when looking for the Butyl tape you mentioned earlier I did find this.
MONO Silicone PRO Premium Silicone Rubber Sealant
https://www.homedepot.ca/product/mono-silicone-pro-premium-silicone-rubber-window-door-sealant-black-290-ml/1001001863

Offline earlbrown

  • Turbo Street Eliminator
  • ******
  • Posts: 1516
  • PSI: 6
    • View Profile
Re: Heater box sealing
« Reply #4 on: June 17 2019, 08:25:38 AM »
That'll work as long as you never want to get that heater box off again.



and those guns are bad about drips and stuff after you release the trigger.
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6362
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: Heater box sealing
« Reply #5 on: June 17 2019, 10:18:16 AM »
That'll work as long as you never want to get that heater box off again.

and those guns are bad about drips and stuff after you release the trigger.

I'm with Earl on both points.

PS (and you may alread know this):Good habit to develop is when u stop squeezing immediately release the plunger with your thumb and throw a paper towel under the tip- at least it give you a chance
« Last Edit: June 17 2019, 10:22:52 AM by daveismissing »
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline Norm340

  • Bone Stock
  • **
  • Posts: 19
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Heater box sealing
« Reply #6 on: June 18 2019, 04:01:28 PM »
That'll work as long as you never want to get that heater box off again.

and those guns are bad about drips and stuff after you release the trigger.

I'm with Earl on both points.

PS (and you may alread know this):Good habit to develop is when u stop squeezing immediately release the plunger with your thumb and throw a paper towel under the tip- at least it give you a chance




I definitely would like to get that heater box off in the future.
If not for me then for the next guy who owns this car.  :icon_smile:


So what would be good to use then?


Thanks you guys

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 8498
  • PSI: 29
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Heater box sealing
« Reply #7 on: June 18 2019, 11:56:34 PM »
I used some kind of weatherstrippi ng seal that came in strips arrayed on a waxy paper...forget what it was called.  May have been by 3M? strip caulk?
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Norm340

  • Bone Stock
  • **
  • Posts: 19
  • PSI: 0
  • Boost n00b
    • View Profile
Re: Heater box sealing
« Reply #8 on: June 19 2019, 11:30:17 AM »
I used some kind of weatherstrippi ng seal that came in strips arrayed on a waxy paper...forget what it was called.  May have been by 3M? strip caulk?


Hey you guys thanks for all the input/help.
3M strip caulk it is then.
I'll throw the link below just to be sure I'm using the right stuff.


https://www.napaonline.com/en/p/MMM08578


Thanks again.






Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 8498
  • PSI: 29
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Heater box sealing
« Reply #9 on: June 19 2019, 10:45:06 PM »
Of course, I have not tried to take the top off since.....:D
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline daveismissing

  • Two Buicks- too little money$$
  • Turbo Street Outlaw
  • *******
  • Posts: 6362
  • PSI: 3
  • Two Buicks- too little money$$
    • View Profile
Re: Heater box sealing
« Reply #10 on: June 20 2019, 09:17:54 PM »
Good for stickin' the brown paper back onto the inner doors too
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline 6 PAK

  • Newbie
  • *
  • Posts: 2
  • PSI: 0
    • View Profile
Re: Heater box sealing
« Reply #11 on: January 29 2020, 10:43:06 PM »
I used what they called " Dum Dum ". Wet your fingers while you remove it from the tape. I was told some dealerships use it. About $12.00 for a roll at Advance.
87 GN
87 Turbo T
99 Chevy Tahoe
93 Chevy (INDY PACE) Truck

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 8498
  • PSI: 29
    • View Profile
    • http://www.vortexbuicks-etc.com/
Re: Heater box sealing
« Reply #12 on: January 29 2020, 11:16:49 PM »
Dum dum...


I have not heard that name in years :)
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Steve Wood

  • Turbo Street Outlaw
  • *******
  • Posts: 8498
  • PSI: 29
    • View Profile
    • http://www.vortexbuicks-etc.com/
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.