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savage
04-24-2001, 05:24 PM
What is the gear ratio of a 150 HP Mercury outboard serial #06552262 ?
What is the gear ratio of a 200 HP Mariner outboard serial #06494110
Can a 150 HP lower unit be used on a 200 HP powerhead ?


my current set up is a 150HP merc running a 24 pitch TURBO prop at 5900 rpm speed is low 60's. My plan is to rebuild a 200HP power head that I have and install it on my 150 center section/lower unit. Both power heads I believe are of the same year. I talked to a local tech and he thinks the 150 and the 200 have the same ratios for that year.I need to know for certain though that's why I gave the serial number information. Can anyone verify the ratios by serial number? THANKS.