72Mach 1 - Heater hose through the firewall. Is there something missing?

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bdennis

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Looking at my heater hoses that run from the engine through the firewall to the heater on my 72 Mach1 (351-2v).

I'm thinking there should be a rubber grommet or something around the pipes to stop air / heat / cold coming into the cabin from the engine bay.

Can someone share any pics of what it "should" look like?

20210421_201949 (Large).jpg

Looking at a 71 Boss 351 over the weekend it seems to have a foam cover, but I wonder if that's correct? Wouldn't the foam go between the firewall and the heater box on the inside of the car?

If this is correct.. Are these available some somewhere. I cant find them in the Scott Drake parts book.

20210418_123342 (Large).jpg

 

Hemikiller

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The foam is correct on the Boss. IMO, it's there to keep air, water and pests out of the interior.

 

droptop73

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On my A/C car the foam is on the inside of the firewall. The foam loose on the outside like above seems like it would be ineffective. 

 

7173Vert

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Yes. this is my original foam pad I reused on my refurbished AC/heater box. I could not find a suitable replacement when restoring my J Code Vert. This is a very heavy and dense foam material and certainly works to keep things out of the interior... It is installed on the inside of the car.

vert 71 ac & heat box rebuild final (2).jpg

 
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It was on my 71 when I got it, but when I redid the bay, it fell apart, so I just made one from, believe it or not, an old dive suit. Did the job until I get around to finding the proper part........... someday.

IMG_1074.1.JPG

 

bdennis

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Thanks for the info guys. 

I will see if I can find some rubber or something to make one from.

I wonder if these would do the job..

https://www.drakeautomotivegroup.com/69-70-htr-hose-f-wall-grommest-382745-s

I also wonder why on earth they would have changed from the 69/70 grommet type per above..

3cb8fa1f7c611a898226b037602f.jpg


 
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