Question on Bearing change out

[Tom Simes]

On Mon, 21 Feb 2005 10:28:19 -0800 (PST)
Bob Richards <bob at toprudder.com> wrote:

> I had heard that the "shields" were really dust covers, and would not
> impede the lubrication from getting to the bearings during normal use.
> IMHO, in the event of a bearing failure, having the shields in place
> might prevent parts of the bearing from damaging the rest of the
> engine. 
>  
> Having said that, I have never installed shielded bearings, so I don't
> have any experience with my theory. Any comments?

I was just going by Boca's documentation which points out that removing
the shields on the main bearing increases the flow through that bearing
to the rear of the engine where the connecting rod and piston
pins live.  Also by example the originals in my engines haven't had
shields and further the things take relatively little force to remove
once you get a good hold on them.  I would imagine that in a really
catastrophic failure the shields are just going to become part of the
high speed metal soup anyway.

-- 
Tom

_____________________________________________________________________

       |  ,  |               Tom Simes
---------(@)---------        AMA 230068
        --|--                NSRCA 3830
          '                  nsrca at shinymetalass.com
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