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Reply to "Is changing oil lines from Catch Can to Oil Breather Box ok?"

Greg can verify but image A  appears to be a breather can and would catch residual oil from the vent lines.

On the factory original motor the crankcase and valve covers vent back to the stock air box, so with the stock box deleted and the intake modified, I'd assume they needed a place for the vent lines to run, and a catch can makes sense.  You should have one fitting off each valve cover and one central engine case fitting (that normally runs to a PCV valve).  There is also a little "pipe system" that comes off the stock intake manifold and circles back to itself.  We retain all of the stock breather system on our builds, and while I normally try not to make assumptions about others builds, I think my reply is a safe assumption because you wouldn't want to plug those 3 vents.  Now the 2 other vents on the intake itself we capped on some of the Outfront motors we saw here, but that's been 12+ years ago so I'm not sure what they do with them today...

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