Marine engines are the heart of any vessel, providing the necessary power to traverse vast and unpredictable bodies of water. From ancient rowed galleys to today’s sophisticated powerboats, the evolution of marine engine technology has been pivotal to the advancement of maritime travel, trade, and warfare. In this article, we’ll navigate through the history and […]

Outboard motors are a critical component for boating enthusiasts, providing the necessary power to navigate waters with ease. However, when it comes to purchasing a used outboard motor, caution is key. Whether you’re considering a used Yamaha 150 outboard motor for sale or a used 70 hp outboard motor, there are common issues you should […]

New vs Remanufactured Engines for Boat Repowering Recent EPA requirements imposed this year on “NEW MARINE ENGINES” now require you to use a more expensive catalyzed engine when repowering your boat. However there are not any such requirements in place for repowering your boat with a REMANUFACTURED MARINE ENGINE. Therefore the following questions have been coming up repeatedly; Is a “rebuilt” engine the same as a factory remanufactured engine? What […]

TOPIC: Mercruiser 4.3L Longblock Replacement and Horsepower Upgrade Options QUESTION: I have a 1997 rinker captiva 192. Merc # K170XXX. The block cracked over the winter. I am looking to replace the stock 2 barrel carb motor with hopefully a upgraded 4.3. I don’t want to go radical but justa increase in performance. Pricing is critical. I […]

TOPIC: Available Big Block V8 Replacement Marine Engine Options for Complete Drop In Bobtail Engines QUESTION: I am interested in purchasing two (2) 8.1L Inboard “Bobtail” engines as direct replacement for some tired 8.1L Crusaders w/ ZF Hurth 63A 2.0 transmissions. My question is what all is included with the “Bobtail pkg? Regards, Patrick RESPONSE: Big Block V8 […]

TOPIC: Looking Up Internal Engine Parts for the Mercruiser 502 Mag Big Block V8 Marine Engines QUESTION: Hello I’m searching for some valve stem seals for my 96′ 502 mag mpi efi engine. Maybe you can help me. The stem has a 9,36 mm stem and the guide has a diameter of 15,77 mm Will these […]

TOPIC: How to Properly Identify a Mercruiser Big Block V8 454 Marine Engine QUESTION: I have a 1993 ( I believe ) mercruiser 454 serial #4501880 need more information as to what engine I exactly have, I just blew a hole in the crank case! Thank you. Alain. RESPONSE: Mercruiser did in fact produce a variety of […]

  TOPIC: How to Distinguish Which Model of 454 MPI Marine Engine you have. Over the past 25 years Mercruiser has produced a variety of different 454 Marine Engines. When purchasing Mercrusier Engine Parts for your particular engine model Performance Product Technologies wants to help make your online purchase goes as quickly and easily as possible. Therefore […]

Oil plays an important role in the overall function of a boat engine. Among other things, it’s responsible for lubricating the moving parts, cleaning and preventing corrosion, improving the seal, and cooling the engine by wicking away heat. Without oil, the engine and its components may overheat and degrade. Boat engine oil normally possesses a […]

Models All Mercruiser Sterndrive and Inboard Gasoline Marine Engines. New Compression Pressure Compression Pressure 100 psi (690 kPa) Minimum (1) (1) Minimum compression recorded in any one cylinder should not be less than 70% of the highest recorded cylinder. Gasoline Engine Compression Test A. With the engine at normal room temperature, ground the ignition coil […]