Thread: Question for our engine experts.

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The engine in my 27 sits on a higher than normal tilt toward the rear, so the oil level is probably at least at the height where it could seep out of that spot. When I replaced the first seal I examined it very closely, as I did the second time. I was expecting to see the oil seeping from around the outside circumferance of the seal because that is metal to metal (metal seal body to metal rear bearing cap) But it is totally dry there. But there was wetness around the bottom of the rubber part where it rides on the crank journal.

Further, I took a magifying glass and really examined that area and the top of the seal is fairly dry, but the bottom showed the wetness. I wiped it totally dry, even using some lacquer thinner, and after a few minutes the wetness reappeared in that same lower place on the journal. No question in my mind it is the rubber to journal seal that is not holding.

You can see in this picture the tilt my engine sits on, and how the oil level could be over that spot on the back of the crank. It actually looks more level in this picture than it really is.......it tilts down quite a bit in reality because this picture was taken before the first ride. Once I let the clutch out, the back sat down a couple more inches than here.

Don