What turbo is this? Nissan

Thread in 'Technical Questions' started by Audiofan, Sep 10, 2016.

  1. Audiofan

    Audiofan New Member

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    I bought a used turbo, seller told me it was from a S15 (ball bearing) but it needs a rebuild. I have read ball bearing are complicated to rebuild so I'm looking for a new CHRA.


    But I'm not sure what model turbo it is, and which CHRA do I need? I think it should be a gt28R


    Here I attached some pics, to see if anyone knows for sure


    Thanks for you help


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    #1 Audiofan, Sep 10, 2016
  2. jflather_105

    jflather_105 Member

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    Not a T25 is it? Looks similar to mine on my S13 which I had out today... [emoji848]


    Sent from my iPhone using Tapatalk
     
    #2 jflather_105, Sep 11, 2016
  3. thenextdk

    thenextdk Member

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    Definitely not a t28r. You can tell from the number of bolts in the compressor housing. Should be six for a t28r.

    If I'm wrong someone will correct me soon enough.
     
    #3 thenextdk, Sep 11, 2016
  4. Hugh Janus

    Hugh Janus Member

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    its the number of bolts on the turbine not compressor
     
    #4 Hugh Janus, Sep 13, 2016
  5. zeppelin101

    zeppelin101 Member

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    There should be an ID tag on it somewhere which if you google that will tell you what it is.

    They aren't sold as T28s any more, they are the next frame size up. You will want a GT2560r core if it is indeed one of those.
     
    #5 zeppelin101, Sep 14, 2016
  6. r3k1355

    r3k1355 Well-Known Member

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    Stock S13 T25 has a pressure nipple in the compressor housing and the intake snout is one piece with the comp housing, like this one \/

    [​IMG]
     
    #6 r3k1355, Sep 14, 2016
  7. jflather_105

    jflather_105 Member

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    Ah... Well mine has the intake snout bolting onto the compressor housing... Does that means mines not a standard 180SX turbo? Or is that from a CA18?


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    #7 jflather_105, Sep 14, 2016
  8. sparky_s13

    sparky_s13 Active Member

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    How can you tell how many bolts are in the compressor housing from the pics anyway???

    Plus anyway as mentioned its the turbine side that has 6 bolts
     
    #8 sparky_s13, Sep 14, 2016
  9. thenextdk

    thenextdk Member

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    Jeez lol my bad!

    I was probably pissed when I replied to that, don't remember posting it.
     
    #9 thenextdk, Sep 14, 2016
  10. r3k1355

    r3k1355 Well-Known Member

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    The SR 180sx ran the T25G, a slightly larger turbo than the T25 form the CA18.
    The T25G did have the intake snout bolted onto the compressor housing.
     
    #10 r3k1355, Sep 15, 2016
  11. Dirk Jan

    Dirk Jan Member

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    S15 Spec R's came with both ball bearing and non-ball bearing turbo's. As mentioned before, the only true way to tell which one you have is by counting the amount of bolts that hold the turbine housing on (6 for the ball bearing core). These BB turbo's are sold today as GT2560R's, so if you're looking for a replacement CHRA (not cheap, mind you) that's the one you're after.
     
    #11 Dirk Jan, Sep 15, 2016
  12. yogi bear

    yogi bear Active Member

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    Just look at the oil feed. Roller bearing versions will have a restrictor in the oil feed. Journal bearing t28's don't.
     
    #12 yogi bear, Sep 22, 2016
  13. Clark3y

    Clark3y Member

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    FWIW there are also 2 versions of the ball bearing unit. Ones with inconel wheel fitted to the 6MT models have a small divider between the wastegate port and turbine outlet. Ones fitted to automatic cars are not equipped with inconel wheel and don't have the divider.
     
    #13 Clark3y, Sep 22, 2016
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