There is a story about the crankcase vent tube on TR3s which might be applicable. They have a small rectangular steel plate welded to the front, directly shading the end of the tube from air flow when driving. The plate is positioned perpendicular to the air flow when driving. My understanding is that it is a spoiler, intended to prevent a Bernoulli effect from sucking out fumes yet allowing it to vent properly. Mike Moore On Feb 18, 2012, at 1:23 PM, Ray Jones wrote: > I agree, the tube is not likely the problem. > However, for the not so quite purest, a hidden PVC would be an option. > A crafty person might manage to install a PCV valve in the Downdraft tube and run a hose up the back of the engine and into the back of the Air-cleaner. It could be almost invisible to the casual eye. > That way, all those fumes would be rebreathed like in later models. Better than having a crankcase blow up with the below fix! > > The PVC was the first emissions device. as I remember. > > Ray > > On Feb 18, 2012, at 2:52 PM, Anthony Rinaldi wrote: > > Hi To All, > > A downdraft tube, on the passenger side valve cover, was used thru the early 60s. On a hot day with the windows open there can be a definite smell inside the car cabin dependent upon ambient conditions especially if there is a wind blowing or not and from what direction. Ask my wife with her unusually good sense of smell. She would tell you, she told me! > > A PCV valve fixes that condition. Of course that would not be stock. The other option would be to replace the DDT with another oil breather cap. That caused a 300 Club member's engine to blow up on a newly rebuilt engine. > > Tony Rinaldi > 300-F Conv't > > [Non-text portions of this message have been removed] > > > > > > [Non-text portions of this message have been removed] > > > > ------------------------------------ > > To send a message to this group, send an email to: > Chrysler300@xxxxxxxxxxxxxxx > > To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or > go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button > > For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm > > For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links > > > ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/