Retrofitting non-A/C ventilation ducts

[frankc]

Originally Posted by 7783911

BTW
first, i do have the top caps from an old diffusor that has the extra split off (small diameter "pipe" )...if i wanted to run both cold and hot air to center vent could i install that and then if so, how would i connect that to the center vent?

thanks
bob

Hi Bob,
I know I responded to you via PM, but thought I would post my response here as well in case anyone else has the same question.

There is no "factory' way to run both cold and hot air to the center vent as that vent is fed only from the cowl intake (fresh air) - see the 2nd diagram in this thread. However, that's not to say that you could not modify the factory setup to add hot air from the right control box by splitting off the hose going to the right defroster and merging it with the center vent. But remember that when you close the cold air valve (top lever all the way left), that completely opens fresh air to the center vent, and the only way to stop that is to turn the dial at the center vent itself to close it, which defeats your purpose. So at best you can get warm air (fresh + hot mixed) out of the center vent.

I'm not saying that you can't get more creative with the plumbing and resolve this, but there is not a lot of room under the cowl, so you will be limited in what you can do.

[jackel81]

Originally Posted by PatrickM

Frank, yours looks great. I hear ya on plugging everything up. I also found the reproduction cardboard like round cover to go over the hole left where the A/C used to come out of the Smuggler's box and into the white splitter.

If I haven't already said it, thanks for putting this thread together and showing the rest of is how to do this. I have become obsessed with it. It's a really intriguing system of our cars that is so often neglected. I was originally afraid to disassemble this octopus, but after reading your thread it explained it so well, I just had to. I will post up final pics sometime soon as I receive the final bits.

I found a source for the Formed Cardboard Cover Plate Part #901.504.747.00. I bought it on eBay from Appbiz.

https://www.ebay.com/itm/231036746888?hash=item35cadcfc88:g:Ht0AAMXQxKxSE6B N