Measuring crank shells

Discussion in '1.8 & 1.8T' started by Savagesam, Nov 18, 2020.

  1. Savagesam

    Savagesam Moderator Staff Member Moderator

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    I’m in need of your help.

    I’ve done a little test, and this is my first result.

    A4FEF2FA-5342-4BC9-9E8A-00FDF8FE37BC.jpeg

    Which reads at like 0.038mm. Maybe a little less.

    Here are the clearances shown from the manufacturer.

    6586D1A5-ECCF-4827-9225-E1722FE5EC7C.png

    So what does this mean? Where do I go now? The engine has standard shells in, I believe I’ll have to double check, they are stamped Audi though.

    I’ve never done this before and my research doesn’t seem to be taking me anywhere...

    *I’m yet to measure all 5 caps, I will do this later on*
     
  2. davidut5 Forum Member

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    Where is the problem? Spec is 0.01-0.04 when new and 0.07mm wear limit, you have 0.03mm.
     
  3. Savagesam

    Savagesam Moderator Staff Member Moderator

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    There isn’t a problem. I just don’t know if that means I just get new standard shells, or move to the next size up or whatever. I just wanted advice on that really.

    so I guess I just buy new standard shells, new bolts and bung it back together.
     
  4. davidut5 Forum Member

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    As now it is not new, it is still well under the max wear limit of 0.07. For next size shells the crank would need grinding but it is not needed. New std shells sound like a good idea.
     
  5. Tristan

    Tristan Paid Member Paid Member

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    Standard shells, and send it.
     
  6. Savagesam

    Savagesam Moderator Staff Member Moderator

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    Ah okay, that’s what I wasn’t sure on. I didn’t know if the next size shell meant a regrind or not.

    Marvellous. Any recommendations on brand?
     
  7. Tristan

    Tristan Paid Member Paid Member

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    Ks / KolbenSchmidt, Mahle
     
  8. Savagesam

    Savagesam Moderator Staff Member Moderator

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  9. Tristan

    Tristan Paid Member Paid Member

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  10. Savagesam

    Savagesam Moderator Staff Member Moderator

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    Oh everything I read was 0.25 was standard. Oops!

    Crank is out, I was going to do it myself, not sure how yet but can’t be that hard.

    If the big end is the ones with the caps into the block, then yes!
     
  11. Savagesam

    Savagesam Moderator Staff Member Moderator

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    Euro car parts offer elring ones for £38 so I’ll get those
     
  12. H8V

    h8v Forum Member

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    Last edited: Nov 18, 2020
  13. Savagesam

    Savagesam Moderator Staff Member Moderator

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    £5 postage, much easier for me to drop into euros on the way past tomorrow for the sake of £3.
     
  14. Savagesam

    Savagesam Moderator Staff Member Moderator

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    How do you go about polishing the crank?
     
  15. H8V

    h8v Forum Member

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    Ah yes, it used to be free postage for anything, and dhl often delivered it the next day.
     
    Savagesam likes this.
  16. Tristan

    Tristan Paid Member Paid Member

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    I send it Jerry Mccarthy Engine Reconditioning:lol:

    Big Ends are the bottom of the Conrod, Mains are the ones that bolt into the bottom of the block.
     
  17. costel1969

    costel1969 Paid Member Paid Member

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    No messin' with Jerry McCarthy - I can vouch for that albeit not much use to Sam
     
  18. Tristan

    Tristan Paid Member Paid Member

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    Jerry does all my engine machining. Top notch people.

    Sam, apparently you can polish Crank journals with fine emery paper, while spinning the crank in a lathe.
     
  19. Savagesam

    Savagesam Moderator Staff Member Moderator

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    Ah yes, Jerry he’s my best mate... nope I’m out, no idea who he is!

    I don’t have a lathe so that’s out.

    Do you think it’s needed? It’s super smooth no putting or anything.

    it’s on each journal.
    6797B698-1ECD-47C5-BD47-55B3FC108E9B.jpeg
     
  20. Tristan

    Tristan Paid Member Paid Member

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    That doesn't look brilliant..
     

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