115 yamaha

fishingjim

Cadet
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Feb 4, 2005
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9
I have a 1990 115 hp 2 stroke yamaha, does anyone know what kind of compression this engine should have? Thanks Jim
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: 115 yamaha

I would expect 100psi+, depending on the guage and technique, from a healthy engine, Jim.<br /><br />The really important criterion is the spread. It should not be over 15% of the average.<br /><br />Good luck. :)
 
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