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I have a 1992 Johnson 9.9 that I installed a 15 hp carb on. It’s on a 92 Tracker guide v16 with a small front deck. Gained about 4-5 mph on average with different weights in the boat. Currently have a 9 pitch prop on and got 14mph at 5650 rpm with two guys, two 29 group batteries, two trolling...

I have a 92 Johnson 9.9 with the plastic top carb. Will the older metal top 15 hp carbs work with my motor? What years will or won’t?

I have a 1985 evinrude 9.9 2 stroke and may have the opportunity to buy a 2006 Johnson 15hp 4 stroke. It is for a 14ft aluminum semi v boat. What are the advantages and disadvantages? Will there be much difference in power since the 15 is a 4 stroke? Thanks

I have a 14 ft aluminum sea nymph 14k which is just an aluminum semi v with an 85 evinrude 9.9. I believe it has the stock 10 pitch prop and I am getting about 4850 rpm and 14.5 mph with 2 people, 3 gal of gas and 29 group battery. About 5080 rpm 17mph with just me. I will usually be riding...