Compression on a high mileage motor
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This is a discussion on Compression on a high mileage motor within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; I am looking at a high mileage wrx at the moment (125,xxx miles). There are some little things i will ...

  1. #1
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    Feb 2011

    Compression on a high mileage motor

    I am looking at a high mileage wrx at the moment (125,xxx miles). There are some little things i will take care of but i was worried about the condition of the motor. I took the wrx into a shop and they did compression test on the motor and the result was around 125psi for all 4 cylinders. Is that normal? Or is that a bit low. Any feedback would be awesome. Thanks

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  3. #2
    Super Moderator (Actually a SuperSpy) SD_GR's Avatar
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    Jul 2002
    CA, US
    I Support ClubWRX
    Limit is 121 PSI, throttle all open, 350 rpm.
    The world breaks everyone and afterward many are strong in the broken places. But those that will not break it kills. It kills the very good and the very gentle and the very brave impartially. If you are none of these you can be sure it will kill you too but there will be no special hurry. Ernest Hemingway, A Farewell to Arms, 1929
    WRX Info Links, Courtesy TheJ
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

  4. #3
    Registered User teflon_jones's Avatar
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    Apr 2007
    8000' up in Colorado
    Those are solid readings for a motor with that many miles on it.
    Past Subies - '11 STI Limited stage 1+ and '04 STi stage 2+
    '13 Wrangler Rubicon - custom front bumper w/12k lb winch & off-road lights, skid plates, diff guards, etc.
    '04 Porsche 911 Turbo GT2 clone 600 HP/TQ
    '77 F-150 heavily modded for off-roading

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