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On Sat, 2006-05-06 at 12:42, Toby Erkson wrote: > Huh? Can you explain this more because I don't understand. I've seen other > engines with the valves directly above the pistons...can't get too much > higher than that. As they are positioned in the head in relation to the oil supply. And, they are further canted at an upward angle decreasing further, the chance for oil to get into the guides. Even without stem seals, ACVW's are rarely seen burning oil on deceleration, unlike a VW Rabbit, and other upright engines. If you ran an ACVW engine rotated 90 degrees, then you would not have this problem. VW didnt use anything at all until about 1966. When they started demanding more out of their engine design. > >-----Original Message----- > >...VW is one of the few > >engines in the world that have their valve at the highest > >point in the engine. And they are inclined upwards from there. > >This is why VW has nevr really needed valve "Seals" > >such as other engines use. > -- 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~