{"product_id":"v-twin-10-1209-knucklehead-engine-case-set","title":"V-Twin 10-1209 Knucklehead Engine Case Set","description":"2023 New Production motor case set features a blank number boss  there are no serial numbers on the case. Sold with Bill of Sale only. Includes the welch plug  and the right and left case races installed as original!\n\u003cp\u003eThe V-Twin 10-1209 Knucklehead Engine Case Set is designed as a replacement for original cases on 1937–1946 Harley-Davidson EL models. Oil from the top end returns through the pushrod tubes rather than through the cylinder base. The case accepts loose roller bearings on the sprocket and pinion shaft sides.\u003c\/p\u003e\u003cp\u003eThis case set requires line lapping of the main case races. The case races should be line bored to 1.500 inches to accept standard rollers. The pinion and sprocket shaft races are not included. Use two gaskets when mounting the oil pump body for proper clearance.\u003c\/p\u003e\u003cp\u003eThe rear motor mount halves are stamped “7” to denote 74 cubic inches; builders may stamp these numbers in. The cam, distributor gear, breather gear, pump and bushing must be ordered separately. V-Twin SKU 10-1209 is supplied as a set.\u003c\/p\u003e\u003cp\u003eFitment: 1937 Harley-Davidson EL; 1938 Harley-Davidson EL; 1939 Harley-Davidson EL; 1940 Harley-Davidson EL; 1941 Harley-Davidson EL; 1942 Harley-Davidson EL; 1943 Harley-Davidson EL; 1944 Harley-Davidson EL; 1945 Harley-Davidson EL; 1946 Harley-Davidson EL.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReplacement Design: Designed to replace the original cases.\u003c\/li\u003e\n\u003cli\u003eOil Return: Oil from the top end returns through the pushrod tubes and does not return through the cylinder base.\u003c\/li\u003e\n\u003cli\u003eBearing Compatibility: Accepts loose roller bearings on the sprocket and pinion shaft sides.\u003c\/li\u003e\n\u003cli\u003eMachining Requirement: Main case races require line lapping; line bore case races to 1.500 inches to accept standard rollers.\u003c\/li\u003e\n\u003cli\u003eOil Pump Clearance: Use two gaskets when mounting the oil pump body for proper clearance.\u003c\/li\u003e\n\u003cli\u003eRace Details: Pinion and sprocket shaft races are not included.\u003c\/li\u003e\n\u003cli\u003eSeparate Components Required: Cam, distributor gear, breather gear, pump and bushing must be ordered separately.\u003c\/li\u003e\n\u003cli\u003eFitment: Fits 1937–1946 Harley-Davidson EL models.\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Set.\u003c\/li\u003e\n\u003cli\u003eAccessory Items: 10-1350 - Replica 74 inch Knucklehead Long Block Natural, 10-0945 - Knucklehead 74 inch Engine Case Set Natural, 10-0980 - Knucklehead Engine Case Set\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson EL 1937\u003cbr\u003e\nHarley Davidson EL 1938\u003cbr\u003e\nHarley Davidson EL 1939\u003cbr\u003e\nHarley Davidson EL 1940\u003cbr\u003e\nHarley Davidson EL 1941\u003cbr\u003e\nHarley Davidson EL 1942\u003cbr\u003e\nHarley Davidson EL 1943\u003cbr\u003e\nHarley Davidson EL 1944\u003cbr\u003e\nHarley Davidson EL 1945\u003cbr\u003e\nHarley Davidson EL 1946\u003cbr\u003e\nHarley Davidson EL 1947\u003cbr\u003e\nHarley Davidson FL 1941\u003cbr\u003e\nHarley Davidson FL 1942\u003cbr\u003e\nHarley Davidson FL 1943\u003cbr\u003e\nHarley Davidson FL 1944\u003cbr\u003e\nHarley Davidson FL 1945\u003cbr\u003e\nHarley Davidson FL 1946\u003cbr\u003e\nHarley Davidson FL 1947\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eUOM: SET\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCountry Of Origin: TAIWAN\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\nAccessory Items:\n10-1350 - Replica 74 inch Knucklehead Long Block Natural\r\n10-0945 - Knucklehead 74 inch Engine Case Set Natural\r\n10-0980 - Knucklehead Engine Case Set\n\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"V-Twin","offers":[{"title":"Default Title","offer_id":68404889354425,"sku":"10-1209","price":2198.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0775\/0179\/2441\/files\/10-1209a.jpg?v=1794683541","url":"https:\/\/www.thespeedshopusa.com\/fr\/products\/v-twin-10-1209-knucklehead-engine-case-set","provider":"THE SPEED SHOP USA","version":"1.0","type":"link"}