Originally posted by Slickriffs
Then I guess the stem to guide clearance must be critical? I mean thats the only defense against sucking oil there then right?
I thought these were supposed to have the umbrella type seals...
Sounds like it time to investigate rebuilding the other head.
Thanks for guick response..much appreciated..
While many people get the idea that the little O-ring is the only valve stem seal that's only 1/2 right. The metal cup between the spring and retainer is susposed to act like an umbrella. The O-ring is to keep oil running down the split between the locks. Many people add rubber umbrellas when they rebuild. Even if you did add the rubber umbrellas 20 years ago they are in the bottom of the pan by now. As with any rubber part time is as much of a factor as miles.