i have been reading this thread along with a few others and decided why not give this a try....
factors for my decision:
i am not likely to drive this car over a thousand miles a year makes me think the chances of coating the valves to the point of being a problem, not likely. plus it is a cheap experiment and too cold to play golf today.
So i looked thru the info in different threads and looked at different ways people did this. i have a tri-carb so the fitting is not at the rear like a lot of others. my first thought was to run a "T" in the hose going from the valve cover to the carb. plug the carb side of the T and then run the valve / hose under the carbs to the front intake. figured this way made the least "looking" changes to the stock look. decided aginst that after not finding any fitting set up i liked at the front intake.
So i went with a brass/copper connection to run back to the PCV and then got a PCV with a 90* elbow on it. hey adding brass and copper to an engine is always a good look right? What could go wrong?
the PCV valve was my biggest hurtle. i did not have any idea which one to pick. No one around here has the PV770. trying to get a cross reference or any info at an auto parts store...HA! But then i couldn't find anything on line either. So in the end i just picked one i knew i could change out to the PV770 if this one did not work as planned. plus it was the cheapest one on the shelf.
So here is what i came up with:
i went with the hole under the plug. See picture above. i was concerned about the ID size but after looking at the PVC valve, the ID's for the valve and the 1/8" fitting were about the same. from there i transitioned from a 1/8" nipple to 1/4 FIP to 3/8" compression fitting. bought a short piece of copper 3/8" OD tubing and ran it back to the PVC. Let the 90 run over to the valve cover hose. all in i think it looks pretty clean. the one issue i thought i might have it the copper tubing bouncing around. i was going to make a bracket for the rear but ended up just using a wiring "P" clip and bolting it to the bracket which holds the fuel line. this layout used the least fittings at the intake.
after the install, i made a seal for the dipstick and put a screw in the vent hole on the oil filler cap. then i adjusted the front carb mixture nut down one flat. i think that is about .006 drop on the seat.
Next comes testing it out. a little cold today but hope to do it this week.
testing:
i planned to start the engine with the oil cap loose just in case it has positive pressure. sound right or not?
second, if i read all this correctly, at idle i should have very little if any vacuum at the oil filler cap.
third, as i increase rpm, i should feel more vacuum at the oil filler cap.
does all this sound right? anything else i should look for?