{"product_id":"v-twin-overhead-valve-auto-advance-distributor-for-harley-davidson-big-twin-models-part-74478d","title":"V-Twin V-Fire Overhead Valve Auto Advance Distributor 74478D For Harley Big Twin","description":"\u003cdiv\u003e\n\u003ch1\u003eV-Twin V-Fire Overhead Valve Auto Advance Distributor 74478D For Harley Big Twin\u003c\/h1\u003e\n\u003cp\u003eChrome-bodied V-Fire auto advance distributor, fully assembled with gear and all internal parts, features a two-bolt flange.\u003c\/p\u003e\n\u003cp\u003eSingle-point type with updated timing marks, designed for Harley Davidson Big Twin models from 1936 to 1945, delivering reliable ignition for vintage restorations and customs.\u003c\/p\u003e\n\u003cp\u003eThe auto-advance mechanism simplifies timing adjustments by removing the need for a left-hand spark advance control, enabling a cleaner handlebar setup.\u003c\/p\u003e\n\u003cp\u003eInstallation requires removing the front cylinder head; the unit supports upgrade and ground-up rebuild projects for authenticity and performance.\u003c\/p\u003e\n\u003cp\u003eMade in Taiwan with a zinc-plated finish for durability and corrosion resistance.\u003c\/p\u003e\n\u003cp\u003eCompatible with chrome and zinc distributor covers and various circuit breaker screw sets (sold separately); the points plate assembly is available separately and can be updated for easier timing adjustments, including routing the points lead wire to exit toward the rear of the distributor.\u003c\/p\u003e\n\u003cp\u003eTiming involves setting the cylinder to top dead center; distributor lobes govern points opening and closing for smooth operation. Front-side points simplify adjustments, and it works with ignition components like the Blue Streak Ignition Point Set.\u003c\/p\u003e\n\u003cp\u003eFitment includes Harley Davidson EL and FL models across 1936–1965 as listed in the product details.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePart number: 74478D\u003c\/li\u003e \u003cli\u003eChrome body and top\u003c\/li\u003e \u003cli\u003eTwo-bolt flange\u003c\/li\u003e \u003cli\u003eAuto-advance mechanism\u003c\/li\u003e \u003cli\u003eSingle-point type with updated timing marks\u003c\/li\u003e\n\u003c\/ul\u003eV-Fire auto advance distributor features a chrome body and top. Distributor is completely assembled with gear and all internal parts and features a two bolt flange. This is single point type with updated timing marks.\n\u003cp\u003eThe V-Twin Part #74478D V-Fire Overhead Valve Auto Advance Distributor is designed specifically for Harley Davidson Big Twin models from 1936 to 1945, offering reliable ignition performance for vintage motorcycle restorations and custom builds. This distributor features an auto-advance mechanism that simplifies ignition timing adjustments, eliminating the need for a left-hand spark advance control and allowing for a more streamlined handlebar setup. Installation requires removing the front cylinder head, and the distributor's design accommodates both upgrade and ground-up rebuild projects, making it an essential component for enthusiasts focused on authenticity and performance.\u003cbr\u003eConstructed in Taiwan, this distributor includes a zinc-plated finish that ensures durability and corrosion resistance. The distributor is compatible with various accessory items, including chrome and zinc-plated distributor covers, as well as different circuit breaker screw sets, which are recommended for secure installation. The points plate assembly, available separately, can be updated for improved performance and easier timing adjustments, especially by modifying the points lead wire to exit toward the rear of the distributor. Proper timing involves setting the cylinder to top dead center, with the distributor's lobes ensuring both points open and close correctly for smooth engine operation.\u003cbr\u003eDesigned with ease of maintenance in mind, the V-Twin distributor's points are positioned on the front side for straightforward adjustment, and the unit works seamlessly with recommended ignition components like the Blue Streak Ignition Point Set. This distributor is ideal for restoring vintage Harley Davidson models or upgrading existing ignition systems, providing dependable performance and ease of installation for experienced mechanics and hobbyists alike.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eAuto advance mechanism for simplified ignition timing\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDesigned for Harley Davidson Big Twin models from 1936 to 1945\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eRequires removal of front cylinder head for installation\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eCompatible with various accessory covers and screws (sold separately)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003ePoints positioned on the front side for easy adjustment\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eMade in Taiwan with durable zinc-plated finish\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson EL 1936\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 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\u003cbr\u003e\nHarley Davidson FL 1948\u003cbr\u003e\nHarley Davidson FL 1949\u003cbr\u003e\nHarley Davidson FL 1950\u003cbr\u003e\nHarley Davidson FL 1951\u003cbr\u003e\nHarley Davidson FL 1952\u003cbr\u003e\nHarley Davidson FL 1953\u003cbr\u003e\nHarley Davidson FL 1954\u003cbr\u003e\nHarley Davidson FL 1955\u003cbr\u003e\nHarley Davidson FL 1956\u003cbr\u003e\nHarley Davidson FL 1957\u003cbr\u003e\nHarley Davidson FL 1958\u003cbr\u003e\nHarley Davidson FL 1959\u003cbr\u003e\nHarley Davidson FL 1960\u003cbr\u003e\nHarley Davidson FL 1961\u003cbr\u003e\nHarley Davidson FL 1962\u003cbr\u003e\nHarley Davidson FL 1963\u003cbr\u003e\nHarley Davidson FL 1964\u003cbr\u003e\nHarley Davidson FL 1965\u003c\/div\u003e","brand":"V-Twin","offers":[{"title":"Default Title","offer_id":44654028390442,"sku":"32-1890","price":192.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/32-1890a.jpg?v=1785913126","url":"https:\/\/atticusgoods.com\/products\/v-twin-overhead-valve-auto-advance-distributor-for-harley-davidson-big-twin-models-part-74478d","provider":"Atticus Goods","version":"1.0","type":"link"}