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    passing 15hp up to 20hp

    Hi all, im sure this has been asked before, but I couldn't find it in any searches so Im gonna throw it out there again. I have a 2006 15hp 4 stroke serial# 1b351432 that I would like to get a few more ponies out of. Ive heard that the 15 and 20 use the same powerhead and the only difference is...
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    Mercury 9.9 2 stroke 3 blade vs 4 blade

    Re: Mercury 9.9 2 stroke 3 blade vs 4 blade Update, I just got back from a test with the new motor. What a difference, 22mph @5400 rpm. Seems like the rpm is a little high at wot but I I can back off the throttle once up on plane and maintain 20 mph at 1/2 throttle. It has a 9" pitch on it now...
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    Mercury 9.9 2 stroke 3 blade vs 4 blade

    Re: Mercury 9.9 2 stroke 3 blade vs 4 blade Here is a pic of the set up. Not the ideal motor for the boat I know, but a new motor ist in the cards for this year. Hoping to make this one work for the season. Did a gps run today with the ventilation problem fixed. It will do 15-16mph wide open...
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    Mercury 9.9 2 stroke 3 blade vs 4 blade

    Hi I'm new to the site and have a question regarding prop selection for my merc 9.9. I recently purchased a Tracker Grizzly 1448 all weld. I put a 1993 mercury 9.9 2 stroke on it for now, saving for a 15hp 4 stroke. I took it out today and was very disappointed in its performance. I could barely...
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