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On Sat, 2006-05-06 at 22:39, Jim Adney wrote: > I suspect that there's a good chance that they stand still while the > valve stem moves back and forth under them, but I have nothing to > base this on. Otherwise, I agree with what you suggest. If you have ever seen one on a head that has been in a running car, and not molested, it is about the location where it touches the guide when the valve opens fully. They were snug on the valve when originally installed. What oil is on the stem when the valve opens, is pushed towards the guide. > > > If you don't get another 4, best to put them on the exhaust valves I'd have > > thought, but if I find some, I'll try to get them off to you on Monday. > > If I only had 4 I'm not sure where I'd put them. The fact that > there's suction on the intake side would make me tend to put them > there and let the exhaust valves get the extra lubrication, but Russ > would do the opposite, but for the same reason. They are a wiper, not a seal..... > > I've never heard anyone else suggest that these were there to deflect > oil INTO the valve guides, but that doesn't mean that Russ is wrong. > I haven't found any proof for either side of this debate anywhere. I was trained at the factory engine school, and this is what I was told by the instructors. And they themselves were of the opinion that they really didn't do much. BTW Jim, You don't know everything. -- 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~