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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
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    James333 Member

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    [Oct 14, 2008]
    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
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    jim s3 Member

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    [Oct 14, 2008]
    dont think you can because of the oil feed to the turbo is on the block correct me if im wrong though
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  4. James333
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    James333 Member

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    [Oct 14, 2008]
    doh!

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

    Maybe my idea of getting a £125 engine to mess around with isnt so good!
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  5. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Oct 14, 2008]
    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
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  6. James333
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    James333 Member

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    [Oct 14, 2008]
    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?
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  7. HTC
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    HTC Active Member

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    [Oct 15, 2008]
    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.
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  8. HTC
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    HTC Active Member

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    [Oct 15, 2008]
    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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