Well i put headers on my car and in the process i punched a hole in my Ac box. The previous owner deleted the ac but the box was left. Will this have any adverse effects on heating with the hole?

 

how big is the hole? i doubt it.

my whole a/c delete box is bolted on but not to well sealed against the firewall and it still blows real nice.

try a cheap fix like some sticky clear tape.

 

Big hole .. I dont think tape would work cause of the headers. Im thinking it will just let header heat into the car which wont be cool. Ill have to fab something up if thats the case.

 

maybe try thin sheet metal, form it, cut it down, drill holes, use some high temp sealer around hole, and screw it in to the box.

 

When I got my car over 3/4ths of the heater box was just ripped out due to the previous owner either installing headers or doing something else. I really don't want to think about what it might have been. Anyway, I got the whole A/C setup including the box from Thirdgenresource and when I received it the heater box was bashed up fairly badly and large pieces were broken out of it (I wonder why they're no longer sponsors of this site ). What I did was used bondo in conjunction with the sticky metal mesh repair sheets that they sell for body repairs. I was able to contour the mesh to the shape I needed and then I applied bondo to the inside and outside of the heater box and then painted it black. Granted you've really gotta have the heater box out to do this, but it's a good fix, and so far has lasted great. If you don't have the A/C hooked up the heater box isn't too awefully hard to remove from the firewall. I would recommend putting some kind of heat reflecting/insulating material on the lower portion of the heater box also. I think I need to do this because I get a lot of hot air blowing in through the HVAC system when I'm driving down the road. It blows right on my feet and I think it's because the headers heat the heater box up a lot and that hot air transfers inside. I'm not sure on that, but it's my theory, so that's my suggestion for you, especially if you do remove the heater box to repair it. Good luck, I'll be interested to hear what you end up doing!!

-Paul