I've got the motor out of my 62 to work on the rear main and clutch. While it's out, I'd like to get the pcv system working again (to help eliminate leaks and reduce the amount of blowby coming out of the breather cap.

There's no warranty plate on the truck, but it appears to have been delivered with a straight 6/3 speed. Somewhere along the line, someone dropped in a rebuilt 292/4-speed T-98. The date code on the block is correct for 62, but the manifold decodes to a 59 truck, so it's a mishmash of parts.

Earlier, someone posted this helpful drawing of the correct PCV system:


If I'm reading this right, the valve is screwed into a fitting in the manifold and it draws air from the crankcase somewhere in the back of the motor via the fitting marked 6A665. On my engine though, I've got something different going on.

These two fittings are screwed into the manifold. A hose with a plug was clamped over the exposed threads of the second fitting:


And on the back, this PCV valve is screwed into I-know-not-what. The black hose there is about 4 inches long and has a breather cap clamped to it on the other end:


So here are a couple of questions. The PCV valve should be screwed into a manifold fitting there in front of the carburetor, yes?

And part #6A665, if I can find one, attaches back near the distributor in the same location as the current fitting?

Thanks, as always, for any help.

~Steve

 

1961/63 Ford Passenger Car 292 & 1961/64 F100/700 292:

The C1AE-6A665-G adapter took the place of the road draft tube when PCV was present. No Ford dealer or obsolete parts vendor has any

 

Do you need the 6A665 fitting? The part that is there looks like it will do the job.

I would move the pcv to the front of the engine as the diagram shows and plumb it to the existing fitting on the back of the block.

 

First off you can get the correct PCV valve from an auto parts store. The PCV does screw into the fitting on the intake and then a rubber hose attaches to the PCV and goes to the fitting in the valley cover. On an original motor it would have been PCV, about a 4 inch hose which goes to a steel tube that ran alongside the right valve cover and then 90's toward the distributor and then another 4 inch hose that connected the steel tube to the deal that screws to the valley cover. The way this one is plumbed I highly doubt it is functional because the suction comes from the intake which pulls the blowby out from the fitting in the valley cover PCV's are 1 way and if installed backwards they will not function.

On a closer look of your motor you have the wrong fitting in the intake manifold. If you get the correct PCV valve you will need a 45 degree brass fitting that is 3/8 inch pipe thread fitting on both ends but 1 is male to go into the intake and the other end is female because the PCV valve has a MPT fitting on 1 end and a hose barb fitting on the other.

At the back of your intake I see on the left head there is a bolt that is loose that used to hold the spark plug wire loom. Take that bolt out and put some thread sealant on it and screw it in and tighten it. It goes into the head and will leak oil if not sealed

 

Thanks, Bill. I got a similar story from the guy on the line at Mummert's when I ordered a new flywheel--hard if not impossible to find. I will keep looking.

In the meantime, I'll see if I can pull the guts out of the pcv valve attached to the current fitting and use it as a nipple to attach the vacuum hose from the front.

Sharp eye! That bolt is loose only because I used it as a lift point when I pulled the motor.

Thanks, everyone, for the help.

~Steve

 

Thought I would post an update to this, in case anyone in the future is dealing with a similar issue.

I have a hydraulics / fittings supplier close by (Royal Brass in Santa Clara) that produced the useable 90 degree adapter for the piece screwed into the back of the valley pan, but I couldn't install it in situ.

Whoever put this together clearly put this part in before the manifold when on. There were still a few threads to unscrew when the bolt was at this height:



Seriously?

Had to cut the bolt off to get the part out. The final assembly was pretty clean:



A fitting for the PCV valve at the front of the motor was relatively simple to find at a hardware store.



I'll connect them with a 1/2" hose once the motor is back in the truck. (Hopefully this weekend.)

~Steve

 

I'm in a similar situation here, but the fitting at the back of my valley pan in missing. My '64 has the road-draft tube that mounts to this fitting. I really want to do away with the draft tube, but don't want to get too heavy into modifications. Anyone have a guess one how I can get my hands on the part that "should" be here or on a replacement?