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A 4JH2-BE model is fitted with a down angle gearbox. A 3GM30FC is a 3 cylinder, freshwater cooled engine from the GM family, with a saildrive attached. The letter C indicates the engine has a saildrive attached. The JH, LH, LP, LY, CX and KY family of engines are all freshwater cooled. If the F is absent, it is a ‘raw’ water cooled engine. On engines that are either ‘raw’ or ‘fresh’, below 34hp, the fresh water cooled engine has the letter F in the model designation, i.e. An engine with an enclosed cooling system containing fresh water and coolant, in turn cooled by raw water going through a heat exchanger, is a fresh water cooled engine. The 1GM, 2GM and 3HM were also uprated to 1GM10, 2GM20 and 3HM35 respectively, note, the suffix numbers are not the horsepower of the engine.Īll of the above engines are either ‘raw water’ cooled or ‘fresh water’ cooled. A 2GM is a 2 cylinder engine with a GM type block, and so on.Ī 3GM30 is a 3GM that has a larger bore and therefore develops more horsepower than its predecessor. For example, 3GM is a 3 cylinder engine with a GM type block. The numbers 1, 3, 4, and 6 indicate the number of cylinders. If an engine model does not have the Y in the beginning, the engine has a vertical cylinder or cylinders. Here are some examples of engine model codes and their meanings: YSE8 Y= horizontal cylinder, lying down. Some older engines have the data plate on the adapter plate between the engine and the gearbox. Most engine model designations are on an engine data plate, on the front or the top of the engine. Your message will NOT be forwarded to the vendor. Please do not try to contact any of the vendors on this website via our Phone, Email or Comment Systems. ⇒ Comments: Submit To ⇒ Comments♥ (Replace "♥" with longer manufactures outboards ⇒ Become an Academy Member and gain access to additional pages and programs! ⇒ Members must SIGN IN to gain access to Members Only areas of this website. ⇒ What our nonprofit Anchors Aweigh Academy and its EAB website have accomplished. ⇒ Layout of the Website's Pages: Page Types, Page Contents,+. ⇒ This Month's Top 20 Most Popular Articles on our EAB website. ⇒ Visit EAB's FEATURED ARTICLES Home Page to preview the vast scope of our website. ⇒ Related Resources: Topics, Directories, Vendors, Products, Media,+. ⇒ ^ ^ Documentation: Catalogs, Brochures, SpecSheets, Manuals, Parts Lists. ⇒ ^ Offerings: Product Descriptions, Specifications, Years, Ratings,+. ⇒ Vendor's Profile, Contact Information,+. PAGE CONTENTS: ( click ⇒ to go to each section on this page) PATH: Media › Creators » Documentation, Books, Magazines, Videos, Websites » ∧ » PATH: Do-It-Yourself » DIY Boat Building & Refitting » ∧ » PATH: Boat Building & Refitting » Boat Equipment » Propulsion » Engines »