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NH-75-Z

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  1. NH-75-Z

    IMGP0254

    NH-75-Z commented on 240ZX's gallery image in Big Z Photo Collection
    IMGP0254
  2. NH-75-Z

    deceleration smoke

    NH-75-Z posted a topic in Engine & Drivetrain
    I have a 75-280 w/91K on it. Got it 2 months ago from So. California. Have spent time getting it tuned,timed,etc and it runs real good. But has developed oil smoking real bad on a long decelaration mode like coasting down a hill. Have done compression check twice, range from 150 to 125 or 130 in #'s 4 and 6. Vacuum is 16"/HG . I adjusted the valves(1st time), no noticiable change. It does not smoke on start up. So what do you all think?? Valve stem seals or lower end IE: rings:cry:
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