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  1. #1

    Compression question

    Iíve got a 2002 N/A 155. What should the compression be on a NA motor?? I know the SC model are lower but I canít find anything on a na motor

  2. #2
    Blackhawk36's Avatar
    Join Date
    Apr 2012
    Maryland, USA
    You would be good to go around 175 psi. All three cylinder should be within 10% of each other. The manual doesn't specify a psi for compression. It recommends a leak down test to determine compression health. I attached the page from the manual with the leak down specs.
    Attached Thumbnails Attached Thumbnails LeakDown.pdf  

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