12/17/2023 0 Comments Jet drive inboard engine![]() When it comes to jet ski engines, the SVHO features the biggest displacement paired with a carefully-designed, low-maintenance supercharger. The Yamaha SVHO engine is known as one of the most reliable supercharged marine engines. Yes, Yamaha’s SVHO engine is boosted with a supercharger and intercooler. SVHO here stands for “Super Vortex High Output.” Is the SVHO Supercharged? HO here stands for “High Output.” What does SVHO Stand for? The HO series includes the ongoing 1.8L HO (1,812cc, 180hp) and the new 1.9L HO (1,898cc, 200hp). What is the Difference Between HO and SVHO?Īs a rule of thumb, the SVHO (250hp) is boosted with a supercharger while the HOs are its naturally aspirated siblings. Takeaways – FAQs About Yamaha HO and SVHO EnginesĪs a takeaway, we’ve answered the most common questions about the HO and SVHO Yamaha marine engines. This means that the naturally aspirated 1.8L HO will be more than likely phased out by this new 1.9L HO sometime soon. In 2024, this engine will be exclusively available on the GP HO and VX Cruiser/Limited HO models, but we’re sure that it will find its way into other “HO” Yamaha PWCs and jet boats. Thanks to these features, the performance of the 1.9L HO Yamaha Marine engine is a whopping 200hp out of the box. This engine also enjoys a revamped cooling system and a less restrictive air intake system. This small change in the engine architecture enlarged the displacement from 1812cc to 1898cc, which makes the 1.9L HO the largest-displacement PWC engine in the industry. ![]() The diameter of the pistons was increased by 2 millimeters (bore: 88mm) while the stroke remained uncharged. Instead, the engine was heavily redesigned with many new features including a revamped camshaft, throttle body, cylinder head, and exhaust manifold. Released for the 2024 season, the new Yamaha 1.9L HO engine is a larger, more advanced configuration of the proven 1.8L HO.īut contrary to popular belief, the 1.9L HO is not just a big-bore version of its predecessor. These engines are paired with an 8-vane, axial-flow, single-stage jet pump for maximum thrust. In contrast, the HO has a compression ratio of 8.5:1, runs on regular gas, and delivers 180 HP. In a nutshell, the SVHO is the supercharged and intercooled configuration, which has a higher compression ratio (11.0:1), runs on premium gasoline and delivers more engine power (250 HP). What is the difference between HO and SVHO? Fuel Supply System: Electronic Fuel Injection.They 1.8L HO and 1.8L SVHO are built from the same base engine, the features of which are as follows: Yamaha 1.8L HO and 1.8L SVHO Specs List Unlike the 1049cc, TR-1 engine, which is derived from the Yamaha R1 motorcycle line, the HO and SVHO are purpose-built marine engines designed from scratch. Today, these engines are used in many high-performance (HO and SVHO) WaveRunners, as well as in many great Yamaha jet boats. They debuted in the race-inspired FZ WaveRunner series but they found their way to other Yamaha vessels. The Japanese manufacturer introduced these high-performance marine power sources in 2013 for the 2014 model year. Let’s drill into the details and take a closer look at each! Yamaha 1.8L HO and 1.8L SVHO Engines Currently, you can find three different engines in this fleet, including the 1.8L HO (180hp), the supercharged 1.8L SVHO (250hp), and the new 1.9L HO (200hp). Yamaha HO and SVHO marine engines are internal combustion gasoline engines designed for WaveRunners and jet boats. ![]()
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