To this site anyway. I have had a 63 F-85 convertible since 1978. Now I learn the carb on it is a 61 or 62 because there's no place for a PCV valve. Anybody know where I can get a 63 carb that has a place for a PCV valve on it? I can have one rebuilt...if I can find one!


Thanks,

Dave

 

Welcome !!

I have no clue on where to look for your carb but if any one does, I am sure they will chime in

 

Welcome to the site. What about an open vacuum port on the manifold?

 

I can't remember details of 63 F85 PCV system but if it's like the full-size car, there is no carb port for PCV unless the car had California emissions equipment.

You should have:

-an air tube from aircleaner snout to the PCV flapper valve on the valve cover
-a vacuum hose from an intake port to a nipple on the PCV flapper

Under normal operation airflow past the tube in the aircleaner snout creates a venturi effect and lifts the PCV flapper off its seat, drawing crankcase vapors out of the engine and into the carb air intake where they're reburned. At idle or other low airflow conditions, the vacuum line to the nipple serves same purpose.

Clumsy and inefficient? Yes, but it worked until they could engineer a true positive crankcase ventilation system. This is 63-64 only; prior to that they used a road draft tube to evacuate blowby gases, then in 1965 there was a true full-vacuum PCV system in place.