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  1. 06-04-2017, 09:58 PM #1
    DR2006RXP
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    Seadoo 300 cylinder compression

    just wondering what cylinder compression is from unit to unit or what would be normal low and high on the new 300 engine.
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  2. 04-15-2020, 03:10 PM #2
    twelve valves
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    Hello, I have a 2019 300px with 0hour, I will try to take the compressions this weekend.
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    Cosmicbrut
  4. 04-15-2020, 09:43 PM #3
    Cosmicbrut
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    On both my 300s 145-155 is the range they were new
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  5. 04-16-2020, 11:22 PM #4
    twelve valves
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    2019 300px 0hr.
    new battery and recharge,
    cold engine,
    no spark plugs,
    trottle open wide,
    9.5 bar 9.75 bar 9.5 bar.
    Attached Thumbnails Attached Thumbnails Click image for larger version.  Name: 006.jpg  Views: 208  Size: 75.2 KB  ID: 460412   Click image for larger version.  Name: 005.jpg  Views: 197  Size: 69.8 KB  ID: 460413   Click image for larger version.  Name: 008.jpg  Views: 207  Size: 52.5 KB  ID: 460414   Click image for larger version.  Name: 009.jpg  Views: 210  Size: 59.0 KB  ID: 460415  
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  6. 04-18-2020, 07:45 AM #5
    guybb3
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    iirc to convert Bar to PSI = Bar X 14.7?
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  7. 04-18-2020, 08:37 AM #6
    twelve valves
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    1 bar = 14.503 psi
    9.5bar = 137.77psi
    9.75bar = 141.40psi
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  8. 04-20-2020, 05:36 AM #7
    guybb3
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    Quote Originally Posted by twelve valves View Post
    1 bar = 14.503 psi
    9.5bar = 137.77psi
    9.75bar = 141.40psi
    Thank you!! I wasn't sure if 14.7 was correct.
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