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Main bearings... What's this?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Omniquito, Sep 30, 2012.

  1. Omniquito
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    Omniquito Member

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    Hi guys,

    As a continuation of chasing an oil pressure issue i dropped the sump, changed the gauze and pump and was inspecting the bottom end and came across something i am not sure what it is?

    ImageUploadedByTapatalk1349002344.715086.jpg

    The centre main has a "tang" like thing each side of the cap and they have quite a bit of movement in them (as far as the recess in the cap lets them move anyway).

    I assume these are normal but is being able to move them normal or does it point to a possible shell issue and loss of pressure that way?

    I dont want to just undo the cap as the bolts are £9 each!

    Also, if i was to replace this, can you do both upper and lower shells without removing the crank? Ie. insert the upper and spin it into place?

    Thanks, Neil.
    #1
  2. superkarl
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    superkarl MAN OF STEEL

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    just take the dam bolts out and look!! lol.
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  3. badger5
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    badger5 RIP S3dave Site Sponsor

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    thrust washers
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  4. Andrew@A.L.D
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    Andrew@A.L.D Cylinder Head Master

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    Thrust washer, its a bearing for side to side movement

    Don't remove the bolt as there stretch bolt and will need to be replaced if removed
    #4
  5. Omniquito
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    Omniquito Member

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    Think I will leave the bearings alone and seal it back up with a new pump and gauze then... See what happens!
    Thanks chaps
    #5
  6. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    You've roasted the engine twice with low oil pressure from a blocked pickup, and your not going to bother checking the main bearings even though theres an obviously discolored cap?
    #6

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