It is possible that the only way you are gonna get a cap that fits is to get an assortment. Tim from ACKits.com has them under SERVICE PORT CAPS ASSORTMENT. There are many sizes such as 13mm & 13.5mm & 14mm & 16mm &17 & 17.5mm We have used our kit a lot to replace various missing...

Agree.

If the evap is 30 degrees below zero then the vent temp will be 30 degrees below zero, which will freeze the evap into a solid block of ice.
dealers and specs have been wrong before.
You are welcome to swing by and check my Model A Ford out next summer The aluminum evap helps, too

Our 1931 Model A Ford with 134 does just that. 134 can work better than ppl think. Selection of the largest parallel condenser you can fit along with sufficient air movement such as adding an electric fan or better yet installing a shroud on the mechanical fan. If you install a fan recall that long ...

Use a private window

"apparently first ac guy told me that there is no pistons and valves available to reconstruct a 10p13 compressor available so best thing would be to get a new compressor." Avoid a rebuilt compressor like the plague. Why not ask Tim the forum owner what he might have available for your appl...

does that sound right?

Cusser is right
"I seem to remember by design - for safety issues - that some outside air always had to be let into the cabin area..."
This is because of smokers. The car would totally fill with smoke otherwise.
However, does sound like the foam is shot

YAY! I too have had a brand new core blocked right out of the box. Now I blow dry compressed air thru everything before installing. We have a commercial dryer (actually a small compressor/evap/condenser- Speedair brand) in series with our shop air because we need super dry air to paint cars in our b...

please post your pressures at 1500 rpm

On a MACS forum always post pressures