Glasshole

The '63 that I just purchased appears to have an incorrect PVC set-up. It currently has one valve cover with a PVC hole. This is where the PCV currently plugs into which feeds into the carb. There is no vented oil filler cap so I have idea where it is getting clean air from. In the pictures I have there is no PVC on either valve cover so where is it supposed to be on this year? Also should there be a vented oil cap for clean air or does it get its clean air from another source?

Bill Irwin

Dear Zora Duntov. I see you have not changed your posting name. I feel it's in bad taste, but it's your call. Bill.

Dan Hampton

Have to agree with Bill. How about: Zora Done-it-all. Sort of catchy.

Glasshole

Do you guys ever assist anyone with their questions or simply waste their time quibbling over their screen name. Grow up guys.....

Now is anyone able to answer the question?

Astrodokk

Mine is a '65 so not sure about '63, but when i was asking about PCV I found out that the earlier than mine cars had an oil fill tube in front with screw in PCV valve and a rear (behind the intake) draft tube that aimed at the street, or something like that. Sounds like someone was trying to do the 70's LT1 type of PCV, which is what I went with...driver's valve cover PCV with the passenger's valve cover clean air intake either from a push in filter or from the carburetor air cleaner.

Glasshole

Yeah, except they didn't leave a place for air to intake as the oil filler cap is not vented. I'm wondering how this has even been running. I guess it must be getting its air from somewhere. Go figure?

rayvaflav

63's don't use a pcv (closed/return) system. Therefore no breathers or pcv valves in the valve covers or oil fill tube. At the rear of your block you will have a crankcase vent tube that exhuasts blow-by and vents the interior of the engine via a road draft tube that exhausts the crankcase vapors into the atmosphere. The air is drawn from an opeining in the air filter base to the crackcase vent tube to the rear of the block. Not the most ecologically efficient system and also why it hasn't been in use since the mid 60's. Search the archives to see some inventive ways of tackling this system while keeping the good looks of your vintage ride !

Glasshole

Hmmm.......does anyone have a picture of this set-up?

lib

1] The PVC hose off back side of carb goes to hole in top of block, between distributor and near fitting for oil press. gauge. 2] The hose at oil fill tube goes to air cleaner housing. Can post pictures if you've same situation.

Glasshole

Yes, if you could post some pictures that would be great.

Thanks

Glasshole

Also, does the PVC valve screw into this hole at the back of the block?

lib

Hope these help; ,

Glasshole

Yes, that does help. Is there a PCV valve somewhere in that line that goes from the back of the block to the carb?

Thanks

wombvette

63s didnt have a valve as such, just a restriction.

lib

If you go to Corv. Central part #301122 (CV 590 PVC) has illustration of valve there. Mine is just out of the picture I posted. You can just see the clamp that goes on the hose end. The other end is threaded into an elbow lash-up to back of carb. It's needed to clear dist., etc. I believe I have other fotos of the valve plumbing at back of carb, if needed, somewhere.

Kensmith

I have to agree here with the others. Zora's name should not be used as a user name out of respect. I'm not trying to bash or criticize, just not tasteful. Maybe use Barack O.

NVaVettes

PVC : PolyVinyl Chloride (plastic)

PCV : Positive Crankcase Ventilation

Glasshole

In fact I use it for that exact reason.....out of respect. I guess everyone has a different perspective (and taste).

Using your same reasoning I suppose people would also take "offense" if I used the name Pablo Picasso in an Art forum???????

Cheers

JohnZ

The '63 PCV system was a one-year-only design; outside air fed from the air cleaner base through a tube at the front to the oil fill tube (with a sealed cap), and fumes were pulled out through a tube behind the distributor from the vent hole in the back of the block to a fitting with a restrictor in it in the back of the carb base.

The flow direction was reversed in 1964 (outside air entered the crankcase through the back of the block and fumes exited through the oil fill tube, and it stayed that way until 1968). Photos below show the original '63 arrangement.

I also think your use of Zora's name as your username is in poor taste.

turbocat

Do you think it would be showing respect for Christians to call themselves GOD?