Texas Sportfishing
Yacht Sales
Yamaha Marine Engines Four Stroke V8 5.3L
Texas Sportfishing Yacht Sales is proud to be a Yamaha Marine Engine dealer.
Please read below for the information on the
Four Stroke V8 5.3L (350 hp)
Massive Power and Torque Features and Benefits:
V8 60° DOHC 32-Valve: Bigger is better. The F350’s 5.3 liter V8 configuration is designed to easily produce 350 prop shaft horsepower, with less stress and strain on internal engine components than small displacement, high-output outboards. Four oversized valves per cylinder increase breathing efficiency and contribute significantly to this engine’s power and torque.
Multi-Point Electronic Fuel Injection: Everything’s under control. Seven different sensors constantly measure vital atmospheric conditions and engine functions to give the Engine Control Module (ECM) the information needed to precisely and instantly adjust the fuel/air mixture for optimum performance and economy.
Variable Camshaft Timing: Power on demand. This system advances and retards the angle of the intake camshaft to dramatically increase power and throttle response in the low- and mid- rpm ranges. This gives the engine substantially greater torque between 2,000-3,500 rpm to plane large offshore boats with authority.
Single Electronic Throttle Control Valve: Only one way in. All air entering the F350 is routed through a single 81 millimeter intake that is controlled by the ECM to ensure the precise amount of air necessary for any given condition. This helps maintain optimum power and efficiency.
Dual In-Bank with Power Surge Chambers: Get outta here. Yamaha’s exclusive in-bank exhaust means it exits through the center of the engine between the "V" of the cylinders, rather than on the exterior side, to allow for a more compact shape. The F350 also features dual exhaust with power surge champers, which help the engine more easily purge the exhaust for greater combustion efficiency and power.
Individual Pulse-Tuned Long Intake Tracks: Take the long way around. Air enters each cylinder through individual long intake tracks, which are ‘pulse-tuned’ to provide air at the precise volume and timing for maximum density and power. The result is more low end and mid-range power and torque.
Saltwater Series XL™ Propellers: Give me a push. In order to harness the power and torque of Yamaha’s F350, Yamaha designed special Saltwater Series XL propellers specifically to move large, heavy offshore boats. With larger diameter and 21 percent more blade surface area than our Saltwater Series II propellers, they help enable the F350 to deliver up to 45 percent more thrust than 250 horsepower class outboards.
Enhanced Lower Unit Bearings: Roll on. An engine with as much power and torques as the F350 needs lower unit bearings and bearing surfaces that stand up to the test. Yamaha has not only changed the type of bearings and/or increased their size, but also hardened the surfaces on which they ride, for increased reliability.
| 
