64-66 AC Evaporator Case Insulation

[damnyankee36]

I found a couple of posts from 3 and 4 years ago asking about the insulation that was apparently factory-applied to the inside of the top lid of the evaporator case.

Has anybody since that time been inside theirs to see what's there?

(The photo below belongs to Calichevyv8)

[LT1 Burb]

The insulation is very similar to the cork tape we use for wrapping refrigeration components, you could use dynamat as it is around the same thickness.

[VictoriaHardware]

I have one that still has the insulation in place. It is closed-cell foam 1/8" thick. It completely covers the inside of the top cover. You can see the indentations from all the brackets, plastic case, and the evaporator core.

[damnyankee36]

Originally Posted by VictoriaHardware;

I have one that still has the insulation in place. It is closed-cell foam 1/8" thick. It completely covers the inside of the top cover. You can see the indentations from all the brackets, plastic case, and the evaporator core.

That's amazing how some can stay completely intact and others are completely missing. Were there any seals along the ends of the core? I'm sure I can just jam something in those areas but seeing actual factory configurations would be nice.

[VictoriaHardware]

There is a similar piece of foam (1/8" x 3.5" x 13") on the bottom of the plastic case where the evaporator sits. (1st pic)

Along each forward vertical end of the evap core there is a foam seal glued to the plastic case. It is 1/4" thick x 3/8" wide x 6.5" long. (2nd & 3rd pic)

[VictoriaHardware]

There are other seals too-

On the bottom of the steel top for the outlet duct there is 1/8" foam. (pic 1)

On the outlet diverter there seems to have been foam completely covering the door on both sides. I assume it was 1/8" thick. (pic 2 & 3)

Around the diverter metal frame there was black strip caulk between the metal and the plastic case. (pic 4 & 5)