1954 239 ohv Y block engine with 1955 F250 intake, 94 holly 2 barrel, and later model valley pan, hooked up hose to valley pan and placed an FV100 pcv valve in intake. Scortched the heat riser on both sides of intake, about 8-10 small oil leaks now. I am blond -lol- and asking your opinion on which way to go. Should I..... 1. Did I hook up the pcv valve the wrong way? 2. Place my 1954 intake back on the engine? 3. Place the vent tube back on the crankcase? 4. Scrap the engine, put on a 1955 239 ohv engine on (I have a spare) 5. Scrap the 1955 239 and go for a 292-312 Y block? 6. Buy a Y block intake with 2100 autolite carb and place it on my 1954 engine or place the intake on my 1955 engine? I would like to hear everyones opinion and thanks. Chris
I used the same pcv valve, the brass or metal one that screws into the intake, same way to valley cover. Heat riser is going to discolor, it just happens. Yblocks just leak, lol.
Maybe, just a thought, it is too much pressure in the motor and I might have to use or make a restrictor valve because of the many small leaks that just popped up after my testing mini road trip.
I dont understand the "restrictor valve" you are talking about. A pcv doesn't make pressure, do you have a breather on the oil fill tube? Too much pressure in the crankcase will cause leaks. For starters, start the engine up, pull the hose off at the pcv valve. It should run like crap and get better if you put your finger over the hole. You should feel it suck your finger to it. That way you will know if the valve is installed in the right direction.
Most of the time, the '55 and up intakes will not seal against the '54 heads. It has to do with the smaller ports of the '54 heads and the larger ports of the '55 and up intakes. If you want to reduce the scorched paint on the intake, there are gaskets available with the exhaust port mostly closed off. Hope this helps a bit!
54 239 is a one year only engine. They changed some parts the next year and the later parts won't fit without major surgery. You didn't mention how many miles were on the engine, but they will leak if they have a bunch of miles on them. Installing a PVC system wouldn't make it leak. Quick answer is to put the 54 manifold back on (with the PCV system) and cut out some small pieces of tin to block off the heat riser ports in the heads to keep from burning the manifold paint. Long answer is to pick up a 292 or 312 and build that one. You can also check out Yblocksforever.com web site for more info. A lot of knowledgeable old guys over there.
Thanks 57Custom300. What do you think about placing the free engine I received, 1955 239 EBV, into my truck and possibly purchasing a later 2-4 barrel intake with the carb and spacer so I could easily hook up my pcv system? Or, just cut my loses and go the 292-312 block way? Or...just place a 390 FE engine and transmission in? Hummm.....
All three of your ideas are good but each has their pitfalls. Installing a later intake on a 239 doesn't always work out. The intake gaskets don't always seal when you put a later intake on a 239 (like Rocket Scientist mentioned). But it has been done. Going the 292/312 route is a good choice. Just make a good check of the engine & cylinder numbers to make sure of what your getting. There are more 312's being "sold" now than we're ever built. The only foolproof way to tell its a 312 is to pull the oil pan & ck for ECZ stamped on the main caps. Don't go by the "dot on the crank" example. It's not 100 percent accurate. The FE idea is good also. Plenty of them out there along with speed equipment. Just remember FE is short for "F#cking Expensive".
Did you plug off the breather on the lower left side of the engine? If not the vacuum from the PCV valve will pull air and dirt into the engine.
Make sure the oil fill cap is the filtered open breatheable type, and the filter media is clear so it will breathe.
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