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-   -   What is the purpose of the two holes inside the #8 nose bearing? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/199014-what-purpose-two-holes-inside-8-nose-bearing.html)

H.G.P. 12-29-2004 08:40 PM
What is the purpose of the two holes inside the #8 nose bearing?
 
What is the purpose of these two holes in the nose bearing seen below at approx. 2:00 o'clock and 6:00? (They can also be seen in the rebuild book photo 3-11)

Thanks
http://forums.pelicanparts.com/uploa...1104385200.jpg

Wayne 962 12-29-2004 10:42 PM
I think they are lubrication for the bearing surfaces (oil flow).

-Wayne

mpdevelopment 12-30-2004 07:00 AM
They are pressure relief holes that prevent overloading the front seal and allow oil to escape from the bearing in the forward direction.


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