Bearing seal against block...

Discussion in 'PSI Superchargers Tech Questions' started by Scouder, Feb 2, 2010.

  1. Scouder

    Scouder New Member

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    This may seem like a silly question, but all these years I never thought about it. When a bearing is torqued into the cap, there is a certain amount of crush that pins it against the block and cap. Is this pressure sufficient to keep oil out from under the bearing, or does oil make it's way between the bearing and the block?

    I was thinking about this because I was thinking about the procedure if I had to replace an upper main bearing at the track. It would be very difficult to keep oil out from under the upper bearing shell as it was slid into place. So, is that a big deal?

    -Scouder
     
    #1
    Scouder, Feb 2, 2010
  2. Mike Canter

    Mike Canter Top Dragster
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    Having oil between the bearing shell and the block is OK. I have read in an article several years ago that the oil between the bearing shell and cap actually helps in heat transfer and keeps the bearing cooler. There is no way that you are going to stop it from happening. A small amount is going to seep in on its one accord.
     
    #2
    Mike Canter, Feb 3, 2010
  3. Scouder

    Scouder New Member

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    Thanks Mike. I won't worry about it then.

    -Scouder
     
    #3
    Scouder, Feb 3, 2010
  4. Mike Canter

    Mike Canter Top Dragster
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    Just wipe both surfaces clean to make sure there is no dirt. I always then apply just a wiping of oil with my finger.
     
    #4
    Mike Canter, Feb 3, 2010
  5. john348

    john348 Top Alcohol

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    Mike
    You have me wondering if a heat sink compond might be a good way to rid heat from bearings
     
    #5
    john348, Feb 3, 2010
  6. Mike Canter

    Mike Canter Top Dragster
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    I am not sure that a heat sink compound would allow proper seating of the bearing. I believe it would be too thick. Good idea.
     
    #6
    Mike Canter, Feb 3, 2010
  7. lucky2wd

    lucky2wd Member

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    does the same thing go for rods too?
     
    #7
    lucky2wd, Feb 3, 2010
  8. Mike Canter

    Mike Canter Top Dragster
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    Yes it does.
     
    #8
    Mike Canter, Feb 3, 2010

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