I'm trying to find out if there are extra vacuum port on the Y-block engine. I currently have a 292 Y-Block two barrel carburetor. I have two vacuum ports a small one by cab to distributor vacuum advance and another port from the engine right underneath carb. In installed a PCV right on top of the valve cover valley and cap out draft. PCV valve is connected to intake tap and share vacuum with heater control selector. By reading a couple of posts On-Line they say is not a good idea to share vacuum port with PCV valve. I'm having an issue were if I drive I get an oil trace on top of the hood by oil filler.
If it was me, I would look at getting a carb spacer with a vacuum nipple, or at least find a spacer thick enough to drill and tap a fitting into. I have had a variety of different factory Ford 4 barrel Bakelite carb spacers, of various thickness, and all the spacers that had a vacuum nipple, had connecting passages in the spacer, to draw from each throttle bore.
Yes, that sound like the route I'm going to take. Does any have a used 2 barrel carb spacer for a Y-Block? I drove the car and pulled the oil filler cap and I could see blow by. I rebuild engine not too long ago it only has around 3.000-4,000 miles on it.
A carb spacer from most any Ford with an Autolite 2100 or Holley 2 barrel should work on a 57 272 or 292. Same mounting pattern. And many mid 60s thru late 70s 2 barrel Ford V8s used a vacuum port for the PCV valve.
I know the 2V spacers from FE's won't work and I don't recall what the ones from smaller 289 look like.
Not sure if they make them with a vacuum port but a Phenolic spacer would also give you the benefit of less heat soak in the hot driving season. Wouldn't be too difficult the drill and tap for a pcv port in one.
Thank you for all the feed back, I looked at Ebay and found one from a 289 engine. It looks the same I hope it fits.
when I couldn't come up with an adapter to mate a 780 Holley to a 425 nailhead manifold I eventually made one from a bomboo cutting board. Very hard and appears to be gasoline proof and hard enough to thread for fitting. A chunk of aluminum had to be ordered and was expensive. Yeah I know but it worked for me. Im old school and cheap.
Quote from: thomasso on 2023-10-31 14:29Im old school and cheap.
^^^^^^^^^^^^^^^^^^^^^^^^^
I like it! Best way to be! :003:
Quote from: hiball3985 on 2023-10-31 09:18I know the 2V spacers from FE's won't work and I don't recall what the ones from smaller 289 look like.
Why wouldn`t a 2 barrel spacer from a FE fit? All Autolite/Motorcraft 2100s and Holley 2 barrel carbs have the same mounting pattern. I could see a later EGR plate not working, but no isea why a spacer from a FE wouldn`t work.
Quote from: 59meteor on 2023-10-31 18:41Why wouldn`t a 2 barrel spacer from a FE fit? All Autolite/Motorcraft 2100s and Holley 2 barrel carbs have the same mounting pattern. I could see a later EGR plate not working, but no isea why a spacer from a FE wouldn`t work.
The bottom of the spacer is open/hollow and the area ere the PCV port is extends rearward about an inch and the is no flat surface on the Y manifold for it to seal on and you would end up with a major vacuum leak. Been there done that :005:
Where could I tap for a PCV Valve on a Y-Block? My intake manifold it only has one vacuum port.
The photos attached show the location of where I added a 1/4" NPT tap for the vacuum line to the PCV valve on my 1957 Fairlane with 292 engine. I no longer have that car so I can't give you exact measurements but I believe the photos provide a good indication of location. The added port was as close to the center of the manifold as possible as I recall. My present 57 Ford has a 312 engine with 4 barrel carb and I also added a PCV to that engine but it was simpler since the 4 barrel carb had a vacuum port out the rear to use.
Good Luck,
Dave
Thank you great picture.
Before all the replays, I actually ordered a 2 carb spacer with a PCV vacuum port from a 289 Mustang. Has anyone modify one of these spacers to work on a Y-Block I see what hiball3985 says about how the spacer will sit on the Y block and the vacuum leak. Not sure if I drill a hole directly onto intake manifold the engine would run rough.
I can tell you that the setup in the photos on my earlier post did not result in rough idle or any other noticeable change in the way the engine ran. You do need to get a PCV valve that is matched in size to your engine (as I recall, I ordered one from Rockauto for a 1966 Fairlane 289 and it worked very well.)
If you can find a way to add a port to a 2 BBL spacer, that would work equally well and would be less work because you really should remove the intake to do the port drilling to make sure you get all the drilling "junk" out of there. The port system on my 4 BBL 312 works very well with no vacuum leaks either.
Good Luck,
Dave
Thank you.