![]() ![]() When the lower units are pointed straight, the thrust from the propellers goes straight aft. ![]() Lawrence wants the noses of his outboards’ lower units pointed as straight forward as possible. “The boat is much more efficient if you don’t need to trim it out,” he says. Lawrence sets up his boat to use less positive trim. All in all, you may not want to make outboard motor performance upgrades. Every time you modify it for 2 or 3 mph, you’ll lose reliability.” And note that any modifications will void the warranty. Lawrence recommends: “Do not modify your engines. Recreational boaters may have an image of these high-level racers tinkering with their engines, but that’s not true. Modifying Your Outboard Engine Can Lessen Reliability Don’t tinker with modifications to your engine, as they can do more harm than good.
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