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Heater a/c box seals
#1
For anyone who has redone their heater box, where did you get the material for the foam seal that goes on the flapper door? It looks like the whole door was covered on both sides with some kind of foam about 3/16 thick. Mine is almost all disenegrated. Thanks, Ryan

1973 Mach 1, Porsche Guards Red, 429/C6
1972 Mach 1, Grabber Blue, 302/C4, currently under construction
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#2
I just ordered a kit from NPD. Was like $16. I 1st tried CJ Pony Parts but they wasted my time. After a week and a half I get a call that it's on extended backorder. They never have anything in stock and it's burned me one too many times. Never again.

Mike
__________________________________
Black 1985 GT
Yellow 1973 Mustang Mach 1
Black 2012 5.0 GT, 6-speed, Brembo brakes, 3.73's
Wimbledon White 1966 F-100 Shortbed Styleside, 390ci, Tremec 3550, FiTech EFI
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#3
MeZapU;244268 Wrote:I just ordered a kit from NPD. Was like $16. I 1st tried CJ Pony Parts but they wasted my time. After a week and a half I get a call that it's on extended backorder. They never have anything in stock and it's burned me one too many times. Never again.

Thanks!

1973 Mach 1, Porsche Guards Red, 429/C6
1972 Mach 1, Grabber Blue, 302/C4, currently under construction
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#4
Also got a kit from NPD.

https://www.npdlink.com/store/?p=catalog...&year=1971

mike

[Image: 1_11_11_13_11_50_27.png]
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#5
Thanks all for the replies. I found the Daniel Carpenter seal kit. I didn't know these were being reproduced. Ryan

1973 Mach 1, Porsche Guards Red, 429/C6
1972 Mach 1, Grabber Blue, 302/C4, currently under construction
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#6
I just used a Carpenter kit for my air car and none of the foam is the same as original. The seals for the blower and the heater box to the cowl where horrible. The seal that hooked the ducts together for center vent and defrost would no way work so I went to home supply and found some that would work.
Be careful when you pull the flaps out of the heater box and take your time so you do not break the case. I made a U shaped steel blade that I put between the flap and the case so I could slowly hammer the rod out. I then blasted all the pieces and sprayed with rust preventer before putting the foam on. Just washing the case good and wiping down with lacquer thinner made it look brand new. I also pulled all the ducts out and scrubbed them so no dust of cigarette smoke residue.
I never did find a new foam seal that goes between the firewall and the heater box. The thick one where the water lines and air lines come through.
David


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#7
i ordered a kit years ago that was suppose to work on 71-73 heat A/C boxes, nothing was correct, the foam in the kit was the wrong shape and was too dense compared to original.

i think the only foam that was decent was the seal between the box and the fan housing.

someone suggested i get the 1970 version of the kit, so i tried that, again the foam was the wrong shape and wrong density.

I peeled off the original foam, and realized it looked just like the foam i had in tons of Computer electronics boxes for shipping.

I went through my pile of foam and found sheets with similar thickness and density. I then cut out patterns for the doors and i cut out patterns from the original external seals on the center air duct.

I had gotten another A/C air box for parts and found the original doors and foams were in good shape from that one, and i transferred the doors from that into a new case, put some of my new cut foam pieces on and then reused a bunch of the original foam.
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#8
Carolina_Mountain_Mustangs;244380 Wrote:I just used a Carpenter kit for my air car and none of the foam is the same as original. The seals for the blower and the heater box to the cowl where horrible. The seal that hooked the ducts together for center vent and defrost would no way work so I went to home supply and found some that would work.
Be careful when you pull the flaps out of the heater box and take your time so you do not break the case. I made a U shaped steel blade that I put between the flap and the case so I could slowly hammer the rod out. I then blasted all the pieces and sprayed with rust preventer before putting the foam on. Just washing the case good and wiping down with lacquer thinner made it look brand new. I also pulled all the ducts out and scrubbed them so no dust of cigarette smoke residue.
I never did find a new foam seal that goes between the firewall and the heater box. The thick one where the water lines and air lines come through.
David

I think that is the same kit I ordered. I did get everything taken apart and cleaned, just waiting on the seals. Sounds like I may still have to make some of my own seals if the ones in the kit don't work. I've had good luck in the past with Daniel Carpenter repro parts, that's why I went and bought this one. Guess it's like any other repro part, hit or miss. Thanks for your advice on taking things apart. Ryan

1973 Mach 1, Porsche Guards Red, 429/C6
1972 Mach 1, Grabber Blue, 302/C4, currently under construction
  Reply
#9
I got my seal kit today and like everyone was telling me, most of the seals are not even close to the originals. Lesson learned. I'll be taking everyone's advice next time. I do not recommend the 71-73 seal kit.

1973 Mach 1, Porsche Guards Red, 429/C6
1972 Mach 1, Grabber Blue, 302/C4, currently under construction
  Reply
#10
73429mach;244581 Wrote:I got my seal kit today and like everyone was telling me, most of the seals are not even close to the originals. Lesson learned. I'll be taking everyone's advice next time. I do not recommend the 71-73 seal kit.
Sucks doesn't it. You can use some of them but others are no where near the same, little piece of sponge foam instead of a seal.
David


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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