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    VWVortex


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    Thread: 1.9L turbo diesel jetta question

    1. 07-11-2012 12:13 AM #1
      Just bought this car, and I know nothing about it. I'm trying to replace the turbo and have no clue which one to buy. I plan on having a mechanic friend install it, but i need to know whether my 1998 diesel jetta has a ko3 or ko4 flange....does that make sense? I plan on trying to buying used. Which turbos from which cars would fit in mine? I'd appreciate ALL the help I can possibly get. Thanks vortex!

    2. Member burn_your_money's Avatar
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      07-11-2012 11:01 AM #2
      Is your car IDI or TDI? A picture of the engine bay would be good.

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      07-11-2012 04:23 PM #3
      Quote Originally Posted by spry_chic View Post
      Just bought this car, and I know nothing about it. I'm trying to replace the turbo and have no clue which one to buy. I plan on having a mechanic friend install it, but i need to know whether my 1998 diesel jetta has a ko3 or ko4 flange....does that make sense? I plan on trying to buying used. Which turbos from which cars would fit in mine? I'd appreciate ALL the help I can possibly get. Thanks vortex!
      im not aware of a TDI/AAZ ever getting a K04..

      and a Gasser K03 wont work on a diesel. you need a diesel specific K03.

      is your car an AAZ car, or a TDI car?

    4. 07-12-2012 09:32 AM #4
      It's a TDI

    5. Member burn_your_money's Avatar
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      07-12-2012 12:44 PM #5
      So it doesn't look like this?

      http://images.forum-auto.com/mesimages/150578/AAZ.jpg

      If it doesn't, you need a turbo off a AHU or 1Z engine. I think it's either a K03 or a GT15. There are piles of different style K03s. Make sure you get the right one.

      You may want to consider just getting it rebuilt. These guys come recommended
      http://www.vwdiesel.net/forum/index.php?topic=31392.0

      Those small turbos are hard to find in good shape used because they are almost always boosting.

    6. 07-12-2012 08:34 PM #6
      honestly, I don't even know where the turbo is in that picture....

    7. 07-12-2012 08:35 PM #7
      on top of the motor maybe??

    8. Member Rockerchick's Avatar
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      07-12-2012 09:20 PM #8
      Behind the motor, by the firewall.
      Quote Originally Posted by TM87 View Post
      VW-making mechanics out of owners since 1957.
      The project - '84 Jetta 1.6TD, 186k+, fully rebuilt, Giles IP and injectors, 2.5" custom exhaust, 51mpg
      Hers - '03 BMP 20thAE GTI, 130k, 3" 42DD turbo back, Unitronic Stage 2
      His - '01 Jetta TDI, 135k. Now has 3 pedals, as it should!

    9. Member burn_your_money's Avatar
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      07-13-2012 12:10 PM #9
      Have your mechanic friend take a look at it and get the number off the tag on the turbo. It's on the compressor side and is usually blue or green. It's also usually covered in grease and oil.

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      07-13-2012 12:37 PM #10
      just get your turbo rebuild.. its ALOT better than buying a used one, just to find out that IT NEEDS REBUILT AS WELL!!

      so, spend the $225 bucks, and send it to turboXS for a rebuild.. it will come back to you in BETTER than brand new condition..

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