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k03 turbo question

Discussion in 'A4/S4 forum(B5 Chassis)' started by gaz71, Aug 10, 2010.

  1. gaz71
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    gaz71 1.8T Quattro Sport AJL

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    Would the K03 turbo out of a FWD 1.8t Sport (1996) be the same as the stock one in a Quattro 1.8t Sport (1999)?

    Not sure what engine the FWD has (guessing its an AEB), the one in the Quattro is an AJL.

    Thanks
    #1
  2. jcb
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    jcb Active Member

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    sure some KKK guru will be along shortly but I am pretty sure they are.
    Only diff between the 150 and 180bhp motors is the MAP IIRC
    #2
  3. Oranoco
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    Oranoco Well-Known Member

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    The T-Sport Quattro is supposed to have a K03s as opposed to the K03 of the T-Sport. However I have heard from more than one source that this isn't always the case.
    #3
  4. ian52
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    ian52 2000 a4 1.8tqs-yellow

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    It's a myth they have the k03s. Just the tiny k03. Think only the late DBW ones got them.
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  5. jcb
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    jcb Active Member

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    correct, which is why they are 190bhp IIRC
    #5
  6. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator

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    info is at the top there in the sticky bit. But as far as we are concerned a ko3 is what you want from a 1.8t long engined car from 1996 to 2001 as a direct replacement, or the turbo from a BEX engined B6 will be a bolt on upgrade
    #6
  7. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    ALL cable throttle 1.8T's fitted to A4's have the same K03-005, including the 180hp AJL motor.

    The very last of the B5's got engines with electronic throttle (APU amongst others), these engines have a slightly larger K03-029, this is NOT a K03S, its the same size as the normal K03 used on A3's and Golfs.

    Both the 005 and 029 are good for about 200-205hp

    Most B6's also have an -029 with the exception of the BEX engined 190hp model, which has a K03-073. THIS is the same size as the K03S fitted to A3's and is good for about 230ish hp
    #7
  8. jcb
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    jcb Active Member

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    there you are see, told you he would be along shortly!!
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  9. gaz71
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    gaz71 1.8T Quattro Sport AJL

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    Here's the turbo in question,

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    Does this look like average condition for around 3000 miles?

    Am I just being paranoid or shouldn't this turbo have KKK stamped on it somewhere?
    #9
  10. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    It doesnt look that new to me TBH.

    The funny symbol on the compressor housing is Borg Warners logo:
    [​IMG]

    From what i can tell, Borg Warner own KKK, so it probably is a genuine turbo.

    The compressor housing has a date stamp on it, get a close up of it to see when the housing was made, might allow you to better track down its age?
    #10
  11. gaz71
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    gaz71 1.8T Quattro Sport AJL

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    Where about on the housing is that situated?
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  12. Oranoco
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    Oranoco Well-Known Member

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    If I were to source am 073 turbo from a BEX model, is it a direct bolt on fit and how will the TIP attach? or will that need modifying as well?
    #12
  13. jcb
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    jcb Active Member

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    doesnt look like 3000 miles, more like 13000
    #13
  14. gaz71
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    gaz71 1.8T Quattro Sport AJL

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    Is it just me or does it look like there is damage to the blades and spindle?

    [​IMG]

    Looking to replace/upgrade my turbo, mines done 120K.

    Anyone got a spare or know where I could get a recon unit?
    #14
  15. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    BEX turbo is a streight fit afaik.
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