what should be a normal compression for mercury 150hp, 1979?
D dimitry Cadet Joined Sep 8, 2002 Messages 7 Sep 9, 2002 #1 what should be a normal compression for mercury 150hp, 1979?
snapperbait Vice Admiral Joined Aug 20, 2002 Messages 5,754 Sep 9, 2002 #2 Re: motor repair The minimum compressiom per cylinder should be no less than 100 psi. The important issue is that all cylinders are within 15psi of each other..
Re: motor repair The minimum compressiom per cylinder should be no less than 100 psi. The important issue is that all cylinders are within 15psi of each other..
D dimitry Cadet Joined Sep 8, 2002 Messages 7 Sep 11, 2002 #3 Re: motor repair What is the range of "normal" values of the compression?<br />The measurement on the motor that I was planning to buy shows 110~120 psi. Is it too close to the minimum?
Re: motor repair What is the range of "normal" values of the compression?<br />The measurement on the motor that I was planning to buy shows 110~120 psi. Is it too close to the minimum?
rickdb1boat Supreme Mariner Joined Jan 23, 2002 Messages 11,195 Sep 11, 2002 #4 Re: motor repair Depends on the age of the Motor and other factors, but anywhere around 100-125, within 15PSI of each other is fine.
Re: motor repair Depends on the age of the Motor and other factors, but anywhere around 100-125, within 15PSI of each other is fine.