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On 22 Jun 2006 at 21:58, John Jaranson wrote: > On Jun 22, 2006, at 9:50 PM, Keith Park wrote: > > > Check and make sure your breather parts are clear and correct for your > > application, I had a leak in the Notch engine in the rear a while > > back that > > turned out to be a PCV valve in the late breather I was using > > restricting > > the airflow, I gutted it and no more oil leaks (till the latest bell > > housing issue) > > I have Sophy's original 1966 small breather on there. The only > difference is that I used a late oil filler tube with the drain return > from the breather. I have the breather plumbed into it instead of just > the little rubber one-way flapper valve on the end. > > Maybe that is forcing all the crankcase pressure to go into the air > cleaner since the bottom of that tube is also pressurized by the > crankcase. Hhhmmmmm. That might explain why I have a leak at the soft > joint between the down tube on the breather and the oil filler pipe > sometimes. > > What do the newer cars do that have this arrangement? PCV valve? I believe the only difference between your system and the later system which started in '68 was that the later breather box is a larger squarish one. One of the functions of this box is to allow any gas flow to slow down and let the oil mist settle out. Then the settled oil can drain back into the crankcase, both via the breather passage and via the drain down to the filler pipe. I've never cut one of those boxes open, but it's possible that there are some baffle plates in there which help the oil mist condense. I believe I have a spare 68-71 (that's the one you want) breather box which you could have for cheap. Whereever you get one, you will want to clean it out well inside. I find that they are often almost completely blocked with decades of sludge. Note also the little drain hole down inside, just next to the top of the attaching "bolt." Clean it out. Also, where the breather box attaches to the breather stand, above the attaching "bolt" there should be a deeply dished insert/washer and then a large flat washer. These also help Breather aside, compression of 95 sounds low. What are you using for P/Cs? BTW, I WILL be making the trip to Invasion 06, so, if possible, please set aside a pair of T-shirts for me, 1 men's large, 1 men's small. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~