I have a 63 Dart 225 w/ manual transmission. I took off the rebuilt carburetor that was on it, it was a rebuilt and installed an original one barrel reconditioned carburetor from a 62. There is only one vacuum line which goes to the distributor, when removing the first one there was a line coming from a PCV valve to the carburetor but this older one does not have this valve on the unit. I was told I might get carbon build up if I don't create vacuum from the PCV valve. If this is true how can I create a vacuum when there is no nipple on the carburetor to go too? I thought I could T off the vacuum line to the distributor but I fear interference with timing if I would.
Happy Holidays gang,
Brian

The PCV valve is one of the best improvements made to auto engines in the last 60 years. It is cheap, and keeps the engine as well as the environment cleaner. You won;t hurt your timing to T into the vacuum advance line, but you might not get enough volume there. It won't hurt aything though. I would look for the correct carburetor. PCV carbs are calibrated for the extra air they get from the crank case, so you can't just drill and tap the base to ad this on.

Sam

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Definitely do not tee the PCV into the vacuum advance line. Doing so would eliminate all vacuum advance action, significantly worsening fuel economy, driveability, and performance. And it'd be pointless anyhow; the flow through the vacuum advance port is a tiny fraction of what is needed for PCV.

PCV was introduced as an option in '61. It was mandatory in California that year and in New York the following year. It was made standard equipment in 1963. As Sam says, it was a great improvement over the previous road draft crankcase ventilation system.

The real fix for your situation is the correct carburetor with a PCV port. However, if you will not buy the correct carburetor, there are a couple of different ways in which the carburetor you have can be modified to accept the PCV hose. If both carburetors (the one you removed and the one you installed) are Carter BBS carbs, the throttle bodies (lowermost casting) can be swapped. You would need to check that the throttle shaft in the throttle body with PCV provision does not have excessive sideplay; if it does you'd need to have it rebushed.

Or, you can add the PCV port and nipple to the '62 throttle body. Most '61-'62 Carter BBS and all '62 (first year) Holley 1920 carbs have the casting "meat" to support this feature; it's just not drilled on carbs not originally so equipped. If you do this, it has to be done carefully and correctly to avoid creating problems. More detail can be provided if you decide to go this route.

Many years ago, there were extra-thick carb base gaskets with PCV inlet nipples on them. This was not a very good solution, because it screwed up the choke and throttle linkage geometry.

If you do not want to modify the carburetor, you can drill and tap the intake manifold plenum for a 3/8" hose barb-to-thread fitting and connect the PCV hose there. Of course, if you do this, you have to remove the carburetor and use a magnet and/or other means to contain the small amount iron filings that will result from the drilling and tapping operation.

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