Inliners International
Posted By: Al 250 with PCV - 09/27/06 12:25 AM
I have a 250 with an Offy valve cover. I wanted to install a PCV valve and so I had the rear of the cover machined to accept a Moroso PCV valve grommet #68782 and installed a Fram PCV valve #FV237. I connected this to the rear port of my Edelbrock 500cfm carb by way of a piece of tubing. My problem is that I seem to be sucking up a lot of oil into my intake. On removing my intake, clean oil justs drips out of the ports. I know the oil is coming through the PCV set up but I'm not sure how to correct it. Any help would be appreciated.
Thanks, Al
Posted By: Mean buzzen half dozen A.K.A. Hank Re: 250 with PCV - 09/27/06 12:49 AM
You need some type of baffle.
If you look at a stock steel cover there should be a piece of boxed tubing mounted to the underside of the valve cover where the pcv valve is.
I believe you could fab a piece like that or cut the spot welds & install it on the alum cover w/short screws?
Posted By: Twisted6 Re: 250 with PCV - 09/27/06 12:55 AM
Thats because you have no baffle under the PVC valve. They do make one that fits and it and has a small slit in the bottom so that the PVC will not su*k out the oil. I think it was mrgasket who has this.The marine covers have a long metal baffle that reach down in between the rockers. but i know that doesn't help you any.
Posted By: Al Re: 250 with PCV - 09/27/06 01:08 AM
Thanks for your responses. The Moroso grommet does have a baffle. It is like a tube with a split in the end. A friend of mine runs one in his V thingy and it works fine. Could there be too much suck from the carb?
Posted By: Diesel Dan Re: 250 with PCV - 09/27/06 07:32 AM
The tube with a split in the end needs an actual baffle to protect it from oil splash. It sounds like what you have is like a breather with a grommet in the top for the PCV.
Posted By: Al Re: 250 with PCV - 09/27/06 09:18 PM
I think i'll take Hank's idea and try and fit the factory baffle to the Offy cover. Thanks for your suggestions.
Al
Posted By: John H. Meredith Re: 250 with PCV - 09/27/06 09:29 PM
If your Offy cover has 2 breather caps like mine, simply plug it (manifold/valve cover) & forget it.

It's just extra hose 'hanging around' anyway.
© Inliners International Bulletin Board