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Can I use a N/A 20v block for BT conversion?

Discussion in 'A3/S3 Forum (8L Chassis)' started by James333, Oct 14, 2008.

  1. James333

    James333 Member

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    Hey, as the title says. It would be easier to keep my car on the road while I built an engine in my garage, I was wondering if the N/A blocks were the same if I were to fit;

    • A new 2.0 FSi crank
    • 83mm forged pistons after a re bore
    • New rods
    Then when i swap the engine, take all the ancillaries from the original and fit to the new block?

    I only ask as a N/A block is so much cheaper and I will be changing all these bits anyway, failing that, is there any difference between engines that were turbo'd from my '01 AMK engine to older ones?

    One more question, are the heads the same on the N/A engines?

    Many thanks, James
     
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  3. jim s3

    jim s3 Member

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    dont think you can because of the oil feed to the turbo is on the block correct me if im wrong though
     
  4. James333

    James333 Member

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    doh!

    Can someone correct jim s3...........................please?!

    Maybe my idea of getting a £125 engine to mess around with isnt so good!
     
  5. Broken Byzan

    Broken Byzan Photographic Moderator
    Staff Member Moderator VCDS Map User Audi A4 quattro

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    I think fundamentaly its the same, but you would need to be drilling holes for coolant or oil etc where a NA doesnt need them.

    The head is deffo different sadly
     
  6. James333

    James333 Member

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    Oh well, i wouldnt be confident drilling holes etc, it was only a thought. I suppose i can make the money back selling my current block when i swap them.

    Are the blocks different throughtout the 20v range?
     
  7. HTC

    HTC Active Member

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    Yes you can. You need to drill into the block or a core plug for the water feed to the turbo. Oil feed is from the oil filter housing. People mention about under piston oil squirters, but I don't think it's a neccesity.

    This guy is building one.
     
  8. HTC

    HTC Active Member

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    All 1.8T 06A blocks with internal water pump can be used. Things differ with regards to rod/piston designs. Cranks are all forged and tough as old boots.
     

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