Everyone rebuilding their A/C system should clean out their HVAC assembly box!
 

When I went through my A/C about 5-6 years ago, I knew I should of did this to my then 25 year old car. Now I'm disgusted to know that I, as well as my family and friends, have been breathing in this crap all these years.

Outside air intake shot immediately after I pulled the whole HVAC unit.
http://www.peachparts.com/shopforum/...1&d=1369085087

Upper outside air plenum. Filthy interior shot with the cover removed.
http://www.peachparts.com/shopforum/...1&d=1369085095

Evaporator - Filled with so much crap that part of the evap is in poor material condition from corrosion.
http://www.peachparts.com/shopforum/...1&d=1369085104

Heater core also took in a lot of dirt.
http://www.peachparts.com/shopforum/...1&d=1369085113


:eek:


I now need to figure out how to implement a cabin filter to keep this box clean.

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Man, that is some nasty stuff there. It appears old car = lots of gunk in the air system. When I see things like this it makes me wonder how the air handling systems on commercial passenger aircraft look like......we can only imagine.....

Bummer no change or straws :D

I'll do this when my heater core fails or I find a mint condition w123 that I can afford....till then my climate control involves rolling the windows down...technically not much better...

I did find a dime down in the Heat Exchanger slot.:)


http://www.peachparts.com/shopforum/...1&d=1369088305



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Nasty! What was the reason to take it to bits this time? I'm sure mine is as dirty. I'm considering doing this solely for air conditioning performance and smell improvements.

Air flow performance was an issue every year in this 105 plus degree heat we have here. Vent temperatures were great though. I figured I'd redo everything including a Sanden compressor upgrade, use of a bigger parallel flow condenser then previously used and finally sound proof the fire wall.

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I could pay you a dime to do mine!!!

When I did my A/C rebuild last year, I was pretty sure that everything was fairly clean. However, I did not pull apart the HVAC system. Maybe I can run vacuum hose in there if I find a good dash and do the swap.

I have a piece of wood wedged in my blower compartment to keep the fresh air flap 100% closed. I did that to maximize A/C efficiency but I can see the other benefits. Keep us posted on what kind of filter setup you design.

Almost .....
 

DeliveryValve ----

Your evaporator didn't look as bad as mine and you got paid more :( I only found a penny down in the defrost area. I like the idea of a cabin vent. Maybe something over the bottom of the blower???



Just for comparisons sake, here's what the 1984 Light Ivory evaporator looked like:

http://i485.photobucket.com/albums/r...x/DSCF0643.jpg
http://i485.photobucket.com/albums/r...x/DSCF0644.jpg
http://i485.photobucket.com/albums/r...x/DSCF0645.jpg
http://i485.photobucket.com/albums/r...x/DSCF0647.jpg

I once removed a 98 camry evaporator ( for a college student freind) - that car also does not use a filter, and it was similar to these pictures, Toyota sold a product in a can that was really powerful it was expanding foam and it pushed itself through the evaporator, heater core etc literally melting the dirt. btw I had to do 4 passes back and forth to make it brand new again.

But just saying, I think the product being sold on pelican with a long straw is similar.

oddball bit

toyota provided a slot for a filter in that car - yet they forgot to install it in the factory.

maybe you could duct the climate control air inlet to the engine air filter, and use the same air filter for both applications?

throwing out ideas, however ridiculous

I think you'd want to throw that idea in the brown file. I wouldn't want hot or cold blowby coming through my vents!

well, that would certainly be bad. :D

I was thinking more along the lines of an aftermarket cone airfilter with a T right after the cone, and ducting that runs to the engine from there.

however, for that amount of work, he might as well just adapt a cabin air filter from some other application that fits nicely.

I've been thinking of doing this with my DD. I can only imagine the crap stuck in there.

Now there's some comforting pictures - thanks for posting them folks!

I agree, is there a thread here where deliveryvalve has done a step by step on this process?

basically, every car needs a cabin air filter.

Another pic to make you feel happy stretch. :D Not MB, but same problem of no air filter-

http://i1217.photobucket.com/albums/...etta/015-1.jpg