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r34 knock

  1. R34 GTT Engine Knock

    Tuning, Technical Questions
    Hi guys i have a wonderful gtt with 450+ hp but recently it started knocking with no loss of power. Sarting to get worried as once i was forced to add some 15w30 oil instead of the 10w60 i usually have. The knocking seems to be comming from the top part of the engine im thinking of a bad lifter...
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