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On Sat, 2006-05-06 at 22:39, Jim Adney wrote: > On 6 May 2006 at 20:19, Keith Park wrote: > > > Ive been told in the past that our rocker areas fill at least half full with > > oil at speed on the highway, suggesting that oil could easily get sucked > > into the intake guides and have no problem oiling the exaust guides. > > Is it true that the heads fill with oil? > > Berg makes this claim, but I'm skeptical. In the first place, that > would leave the sump almost empty, and in the second place it would > require compressing the air in the rocker box to double atmospheric > pressure (except on 72-3 engines with the rocker box vents.) > > It MIGHT be possible if you had vented rocker boxes, but otherwise I > doubt if it happens. This I agree with Jim on. That would mean about 1 quart of oil in each valve cover, which would leave only about 3/4 quart in the sump. The oil pickup is higher than that in the sump. > > > One thing that my Squares engine has done at intervals over its lifespan of > > 100Kmi so far is to FOG THE TOWN on deceleration! At its worse when Ive > > been at speed on the highway for a while... I mean I would turn the sky in > > your rear view mirror blue on a cloudy day! > > > > Lately it has stopped doing that again, hopefully for a while. > > I've seen that happen on early FI cars with the blue nylon "scrubber" > in the breather box, but only on days below freezing, when the > scrubber could freeze up with combustion moisture and prevent the > engine from breathing. > > Do you have the 72-3 rocker box vents? -- 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~