{"product_id":"original-u-s-wwii-aircraft-engine-piston-collection","title":"Original U.S. WWII Aircraft Engine Piston Collection","description":"Original Items: Only One Set Available. This is a collection of four piston heads from various World War Two aircraft, all in used byt good condition. They are as follows:\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eWright Cyclone R-1820\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe R-1820 was at the heart of many famous aircraft including early Douglas airliners (the prototype DC-1, the DC-2, the first civil versions of the DC-3, and the limited-production DC-5), every wartime example of the Boeing B-17 Flying Fortress and Douglas SBD Dauntless bombers, the early versions of the Polikarpov I-16 fighter (as the M-25), and the Piasecki H-21 helicopter. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePratt \u0026amp; Whitney R-4360 Wasp\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe Pratt \u0026amp; Whitney R-4360 Wasp Major is an American 28-cylinder four-row radial piston aircraft engine designed and built during World War II, and the largest-displacement aviation piston engine to be mass-produced in the United States. It was the last of the Pratt \u0026amp; Whitney Wasp family, and the culmination of its maker's piston engine technology, but the war was over before it could power airplanes into combat. It did, however, power many of the last generation of large piston-engined aircraft before turbojets, and equivalent (and superior) horsepower turboprops (such as the Allison T56), supplanted it. Its main rival was the Wright R-3350 Duplex-Cyclone. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePratt \u0026amp; Whitney R-2800 Double Wasp\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe Pratt \u0026amp; Whitney R-2800 Double Wasp is an American twin-row, 18-cylinder, air-cooled radial aircraft engine with a displacement of 2,800 cubic inches (46 L), and is part of the long-lived Wasp family of engines.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe R-2800 saw widespread use in many important American aircraft during and after World War II. During the war years, Pratt \u0026amp; Whitney continued to develop new ideas to upgrade the engine, including water injection for takeoff in cargo and passenger planes and to give emergency power in combat. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eAllison V-1710\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe Allison V-1710 aircraft engine designed and produced by the Allison Engine Company was the only US-developed V-12 liquid-cooled engine to see service during World War II. Versions with a turbocharger gave excellent performance at high altitude in the twin-engined Lockheed P-38 Lightning, and turbo-superchargers were fitted to experimental single-engined fighters with similar results.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe United States Army Air Corps (USAAC) preference for turbochargers early in the V-1710's development program meant that less effort was spent on developing suitable mechanically driven centrifugal superchargers for the Allison V-12 design, as other V-12 designs from friendly nations like the British Rolls-Royce Merlin were already using.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eWhen smaller-dimensioned or lower-cost versions of the V-1710 were desired, they generally had poor performance at higher altitudes. The V-1710 nevertheless gave excellent service when turbocharged, notably in the P-38 Lightning, which accounted for much of the extensive production run.","brand":"Original Items","offers":[{"title":"Default Title","offer_id":31881292677189,"sku":"ONSV5832","price":495.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1524\/1342\/products\/ONSV5832__01A.jpg?v=1601717443","url":"https:\/\/www.ima-usa.com\/products\/original-u-s-wwii-aircraft-engine-piston-collection","provider":"International Military Antiques","version":"1.0","type":"link"}