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On Mon, 2005-04-25 at 20:22, Toby Erkson wrote: > True for a stock engine but hi-perf engines don't always follow the > rules. What has constantly been told to me is that a bigger engine > produces more case pressure (due to blow-by? I dunno) and thus the > valve cover vents actually move air out and towards the breather. > Honestly, I haven't been given solid evidence either way so I'm not sure > myself. I would think that the case breather itself, vented to a carb, > would *seem* to be enough to reduce pressures in the case in a big > engine but I don't know how I would go about performing such tests. Tap > the case with a fitting and attach a pressure gauge? Then start > experimenting? > I wonder if the original poster has checked to see if he has the crankcase baffle under the breather stand. Also, does he have the large washer, and the scrubby pad inside the breather box. These are used to keep excessive oil from getting up into the breather box. -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) '05 KIA Sorento SUV russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~