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2007 225 compression numbers

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gentilebrian

Contributing Member
Looking to buy twin 2008 225s. Manual says minimum compression should be 130. Seems like over 200 is very good. What would be acceptable for a motor with 700 hours?
 
130psi is not acceptable, At 700hrs you should get around 200psi,all cylinders within 10% done with throttle fully open.
 
iang6766 said:
130psi is not acceptable, At 700hrs you should get around 200psi,all cylinders within 10% done with throttle fully open.
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Thank you. The service manual said minimum is 135 not 130. Also says maximum variance is 43PSI. Doesn't say what it should be. Online it seemed over 200psi but I wasn't sure if that was for a perfect new motor and if I should expect that with 700 hours. My current 225s have 800 hours and I like to say are around 170psi on the one motor. Didn't check the other.
 
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