A few years ago I installed a PCV system using the 62-64 valley cover and fittings on our dual quad 292. Took a little “engineering” since the carbs and intake never had them. The valve was a NOS replacement for a 64 Ford/Mercury off e-bay and fully serviceable. It worked fine as our engine is in very good condition with 21” of vacuum in neutral and 18.25 in drive @ 600 rpm. Today I installed a M/E Wagner dual flow PCV valve which is tunable hoping to get a better handle on the minor leaks the engine has. The stock unit did help but others I’ve talked too say these do a little more in that area. I will know after a few months. Photos are two responses down.
Those oil leaks will also become outside air ingestion points, depending on when the crankcase is pressurized/negative pressure and throw the fuel calibration off with the added benefit of unfiltered outside air being drawn into the engine. Can someone point that out to me as I am not familiar with the setup here ...
I have the MEWagner's on both of mine. On my sbc it eliminated the oil film on the valve covers and a small oil leak, eemed to idle smother after install. This is on a 330hp 350. Put one on the 300hp 302 in my 55 Sunliner from the start.
First the oil leakage. It doesn’t leak. It has minor drips to a washing machine white plastic pan I keep under the car in the garage. The car had no PCV system when new or when I bought the car. I added a stock 62-64 Ford/Mercury system to reduce the smell in the garage after driving. It worked great and helped with the minor drips under the engine. If your familiar with a Ford y-block you know there are many places since the oil pump is on the outside. To your question if the suction thru this system the amount of air to the total amount of air to the intake from the crankcase vapor flowing thru the engine would be negligible. Second the Wagner system. It has idle and cruise p***ages that work on the vacuum signal from the engine and each one is set by the installer using a vacuum gauge and the instructions supplied. The unit is made to fit a valve cover PCV system. My Ford, like many engines of the 50-70’s, has sealed covers and the recommended installation is for vertical being best I did not install is like the stock one horizontal. I had to purchase the lower tubing adapter from them. The firewall was a natural since my engine has dual quads and not much room. There are at least 3 You Tubes on the installation of one of these units and it’s settings; one is by the company. In the valve cover style it is very simple; in an older vehicle a little more work but easy. If you are familiar with 1961-up SBC’s with the internal “trash can” oil vapor deflector it would be the same that I did. ME Wagner has an excellent web site on this system. It is a very nice aluminum machined device with o-ring seals and adjustability for low vacuum large engines.
okiedokie… it seems on stock PCV systems that use only rocker covers that put a breather on the opposite side that doesn’t have a hose to the air filter do vapor some; I’m glad the Wagner helped with it for you. The owner told me on a call, a fellow in Australia had a very minor leak, a opened the idle screw on the unit 1/4 turn and stopped the leak. I’m sure a large inch engine adjusts different than a smaller engine and I’m thinking what he did was tell the unit it was on a bigger engine. Two of my friends have this system. One is on a later 318 MOPAR and the other a 63 Merc Meteror 260” with later rocker covers so he didn’t need much plumbing.
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