Engine: 64 289 pcv valve question

[50pete]

Hi Guys, I have a 53 coupe with a 64 drive train, cast aluminum valve covers & vally pan. There's no pcv valve & the engine runs a bit rough, i thought i read on here(can't find it now) that will be the case with no valve. I'm going to pull the intake & vally pan, drill & tap a hole for a hose barb fitting & plumb it to the back of the carb(edlebrock). I don't know what valve to use any suggestions?

[Skip Lackie]

I don't think it matters much which one you use if you're gonna install a non-authentic system. The correct 64 PCV is NLA and very hard to find anyway. Just get one that matches the fittings (threaded or hose) that you use.

[JDP]

Hi Guys, I have a 53 coupe with a 64 drive train, cast aluminum valve covers & vally pan. There's no pcv valve & the engine runs a bit rough, i thought i read on here(can't find it now) that will be the case with no valve. I'm going to pull the intake & vally pan, drill & tap a hole for a hose barb fitting & plumb it to the back of the carb(edlebrock). I don't know what valve to use any suggestions?

As Skip suggests, don't bother. Adding the valve will clean up the emissions a tad, but won't make the engine run better.

[Dan Timberlake]

There was always a Crankcase Ventilation system on passenger car and truck engines. It was far more than a simple vent for blowby to prevent pressurizing the crankcase. The early versions were a "road draft tube" that hung down so supposedly when the car was moving air would be drawn OUT the road draft tube and IN thru the oil fill cap etc. Later, manifold vacuum was applied to Positively scavenge the crankcase, and fresh air was admitted thru a hose leading from the air filter. Long before Positive Crankcase Ventilation was mandated in the 60s at least one manufacturer recognized there were engine durability benefits to a PCV system in some kinds of service.

[PackardV8]

I've always found those for the early small block Ford ('65-'70 289"-302") to work well.

jack vines

[Buzzard]

And to add to Jack's comments, weren't those also conveniently threaded as well? (and sized for approximately the same displacements).
Bill

[karterfred88]

Hi Guys, I have a 53 coupe with a 64 drive train, cast aluminum valve covers & vally pan. There's no pcv valve & the engine runs a bit rough, i thought i read on here(can't find it now) that will be the case with no valve. I'm going to pull the intake & vally pan, drill & tap a hole for a hose barb fitting & plumb it to the back of the carb(edlebrock). I don't know what valve to use any suggestions?

If you do it, remember the Edlebrock PCV connection is at the front--not rear of the carb base

[53commander]

Also if you use the port at the carb you will need a brass adapter as the PCV valves are tapered and will crack the carb base without the adapter.

[karterfred88]

Also if you use the port at the carb you will need a brass adapter as the PCV valves are tapered and will crack the carb base without the adapter.

???? I would think he would just use PCV hose on either side of the off the shelf PCV valve, not a screw in style original as they are mostly lost in action (if lucky might find an OEM)
If it's a true 64 engine wouldn't already have the dipstick-PCV tube with a hose barb on it? Do the aluminum valve covers have breather caps--at least one??

[53commander]

???? I would think he would just use PCV hose on either side of the off the shelf PCV valve, not a screw in style original as they are mostly lost in action (if lucky might find an OEM)
If it's a true 64 engine wouldn't already have the dipstick-PCV tube with a hose barb on it? Do the aluminum valve covers have breather caps--at least one??

The screw in style is very much an "off the shelf" part as it fits many different cars. I got one at my local FLAPS for about $5.00.

[50pete]

Yes it's a 64, PK328. yep has a breather on each side, as far as the dip stick PCV tube
nothing like that here. I'll use a hose on each side, the edelbrock already has a hose barb on it(capped 4 now). I'm sure this has been done before, anybody have a part # I've read these are sized per displacement. Thanks

[Skybolt]

I was informed, whether correctly or not, that this http://www.ebay.com/itm/New-OEM-ACDe...-/121110694420 is a direct replacement for the 64 PCV valve.


Len

[Skip Lackie]

I was informed, whether correctly or not, that this http://www.ebay.com/itm/New-OEM-ACDe...-/121110694420 is a direct replacement for the 64 PCV valve.
[ATTACH=CONFIG]41950[/ATTACH]

Len

I tried to confirm that and I THINK that is correct -- but only for 64 V8 with 4-bbl carb. The 64 V8 with 2-bbl carb apparently took a different PCV. Not sure what the difference was/is between the two PCVs. BTW, it's worth noting that both 64 V8 PCV numbers had already disappeared from the AC Delco catalog by 1970 -- so I guess it wasn't used on any other vehicles.

[altair]

A pcv valve system is not the be-all end-all, a conventional draft tube is equally effective. A draft tube is least effective at low speeds and most effective at higher speeds, where as at higher speeds and lower vacuum the pcv system becomes less effective. Because of these ineffective ranges engines to day control the crankcase ventilation electronically. The early pcv systems were introduced as a political motive. Somebody noticed a tired engine smoking out the draft tube and decided to eliminate said smoke by returning it into the air cleaner. By returning in to the air cleaner caused excessive oil film and was generally messy. The vapor was then redirected in to the base of the carb, however there was problems of severe back firing, hence the one way valve was developed to prevent the back firing and they gave it a fancy name, Positive Crank Case Ventilation. Many stationary and or enclosed engines were fitted with a system to recover crank case vapor because of necessity. A draft tube on an enclosed and/or stationary engine was ineffective therefore the engine vacuum was used to control said vapor. PVC, draft tubes and vacuum recovery systems was never totally effective until the modern computer was introduced to control the vapor.

[Studebakercenteroforegon]

There is a fairly common earlier GM application PCV valve the looks like the '64 Studebaker valve that screws into the lifter cover...EXCEPT the air flow is backwards. Most earlier all metal valves will have an arrow stamped indicating the direction of air flow. The air flow is towards the carburetor.