Heater Box Repairs

Like most components on this car, the heater box has seen it's share of neglect and abuse. Someone has been into in the past, perhaps for a new heater core or to just try to figure to figure out why something didn't work. Probably started when the heater blower motor seized or vacuum controls got sticky, or wiring fried.

In any case, the fiberglass housing was severely cracked and broken in numerous places. A couple of the mounting studs (that hold it to the firewall) were completely broken off with chunks of fiberglass still attached.

I sent old seals and gaskets off to Detroit Muscle Technologies months ago for them to recreate. Much of them were part of the HVAC system and found in the heater box. Sadly, they haven't responded to any emails or attempts to phone them so I may end up making all of my own - we'll see.

In the mean time I'm attempting to repair and restore the box. With all the cracks, breaks, and missing bits it's pretty flimsy. But, with the help of fiberglass mat and resin it's shaping up nicely.

Most of the repairs are on the inside where they won't be seen. By necessity, some are on the outside which will serve to add much needed strength and reinforcement. Little will be visible once it's fully reassembled and painted - and even then you'll have to be standing on your head under the dash to see it.