Quote: Regarding where the seal rides, 2 questions...
Was the crank all the way back, as in, the end play?
Was the spot where the seal was possibly a worn knurled area?
Thanks.
Thrust is at minimum spec.....if I remember it's at .007 and where that seal rides it about .030 in front of the knurling.
New Eagle crank so the knurling is new and looks good.
Here is a picture showing where a lip seal rides on the crank. It is far in front of where the knurling is.
.......... Actually the only time I had one that never leaked was when I installed it BACKWARDS from the above pic. I always thought the knurling was there to direct the oil back into the engin and that the seal had to ride in the knurled part of the crank as long as the knurling was smooth. Funny that when I had the motor re-build the seal was installed the CORRECT way (same crank/sealholder and block)and then it leaked like crazy. On a recent build, I used the newer orange seals (440 source)with some hylomar in the groove befor the seal and the seal installed with the lip inward and got a good seal with that motor.
