Air cleaner question. Hose confusion (photos included)

[markeaton]

My first time using a stock air-cleaner. And I have a couple of questions.

Rob and Dave's air-cooled site offer some great instruction. But I am confused on what is said and what the photo shows. My eyes are getting older.

On the link, they show in the 2nd photo down a couple of things:
http://www.vw-resource.com/air_cleaner.html#vacuum

First, breather hose to the oil filler pipe to the air cleaner. It appears in their photo to be attaching to the "hole" on the right facing it from the side and is bigger. In my attached photo, I show what is a matching hole size to the one on the left. Which is it?

Secondly, their pic shows the vacuum line attaching to a port hole in the intake manifold. But mine does not have one. The only "hole" is on the end (I show it with a rubber cap off). If I don't have one in the spot Rob and Dave show, do I use the one I have or not use at all?

Thank you,
Mark

[Zundfolge1432]

The hose for air cleaner is going charcoal canister, usually that hose is rotten in capped mine off. Vent for crankcase next to oil fill goes to air cleaner too. Get one for 74 it will fit. The center section of intake manifold is aftermarket and not drilled for fitting. You could drill and tap.

Edit 74 won’t fit you are used no earlier oil fill, longer hose will work there.

[61SNRF]

The crankcase vent hose for 73 1/2-74 US Beetles connects to the larger forward fitting on the air cleaner housing (ACL). Hard to see in your photo but it's the one to the right of your finger.
You can't find a place to connect on your engine because you have the wrong oil filler/PCV vent housing. The correct one has a larger fitting that matches the size of the one on the ACL. The correct housing does not have a road draft tube at all. Can't find a picture but there is one in the classifieds...
https://www.thesamba.com/vw/classifieds/detail.php?id=2017633
VW used a short 90 degree molded hose for the connection. There is one now in the classifieds or search for PN 113-129-651...
https://www.thesamba.com/vw/classifieds/detail.php?id=2233071
You can vaguely see how it looks connected up from this photo found in the Engine Guide...

Also seen in photo and as Zundfolge1432 says, the smaller fitting on your ACL connects to one side of the carbon canister under R/R fender.

As for your air cleaner pre-heat (TAC), yes it's vacuum source hose should connect to a fitting on manifold just below carb, but you could simply connect it to the left manifold casting and it will work just the same. Manifold vacuum is manifold vacuum.
Keep in mind it's never going to "look" stock and you will have to come up with safe and secure house routing.

On the subject of your TAC, do you know if the thermostatic vacuum valve (TVV), the one top/center of upper half in the ACL, is any good? It should be open to vac flow under a certain temp and close off above a certain temp (you will have to research the specs).
If that's good, do you know if the thermostatic vacuum servo on the hot air intake is any good? When drawn upon it should hold a vacuum and when activated operate a flap in the ACL that opens to allow warm air to enter the intake air stream.
If either or both of these items are non-operable all you're doing is connecting hoses for litte reason.
_________________
-Bruce

An ounce of prevention is worth a pound of cure.

[markeaton]

Bruce... you have given me a lot to take in. Thank you !!!!

I am heading to help someone out... when I return (or tomorrow) I will revisit your well thought out questions and help.

[volksworld]

the fitting the carb you have the black cap on should be the manifold vacuum connection for a dvda distributor ....you can hook the air cleaner hose there...oops just saw the pic of the end casting...you can hook it up there too...also make sure the diaphram in the snorkel is ok or you'll be hooking up a vacuum leak...if you dont want to source another oil filler just hook the hose on your existing breather to the smaller nipple on the air filter and cap off the big one...the larger hose was necessary when they eliminated the road draft tube for emissions reasons....it may not be ''correct'' but it will work just fine

[Xevin]

https://www.thesamba.com/vw/forum/viewtopic.php?p=...1e#8933718

Some more info on this subject in my thread. A picture of the thermostat with part number as well in the following pages.
_________________
Keep on Busin'

[sb001]

[Al Capulco]

It's call a dashpot. It part of the emissions controls found on '73 and '74 models.

[markeaton]

[61SNRF]

[markeaton]

Thanks Bruce. I need to revisit. Not sure what I saw. I will take a pic later.