{"product_id":"s-s-84-91-crankcase-assembly-std-bore-natural-for-harley-davidson","title":"S\u0026amp;S, 84-91 Crankcase Assembly, Standard Bore. Natural For Harley Davidson","description":"\u003cp\u003e S\u0026amp;S Superstock™ crankcases, constructed from 356-T6 aluminum, are much stronger than OEM crankcases.\u003cbr\u003e OEM crankcases can crack in high-performance or even stock applications, as many of us have found out the hard way. \u003cbr\u003eThese S\u0026amp;S Superstock™ crankcases can be used for both stock and competition replacement applications.\u003cbr\u003e The important thing for the engine manufacturer is the substantial savings in labor that comes with using S\u0026amp;S crankcases.\u003cbr\u003e These crankcases come \"set up\" with Timken sprocket shaft main bearing races and cam needle bearings installed and pinion shaft main bearing race pressed and ground.\u003cbr\u003e Additional parts supplied include Timken sprocket shaft bearings, cylinder studs, nickel-plated crankcase bolts, crankcase fittings, oil pressure sensor, timing and magnetic crankcase drain plugs, and a specially designed S\u0026amp;S alternator stator plug retaining screw.\u003cbr\u003e Flywheel scrapers are machined to match original 8-1\/2\" diameter flywheels. \u003cbr\u003eS\u0026amp;S cases maximize crankcase oil scavenging efficiency by using a \"ported\" design vent passage.\u003cbr\u003e S\u0026amp;S cases have clearance up to and including 5\", so no additional clearance is required for stepped cylinders.\u003cbr\u003e S\u0026amp;S boxes are delivered complete with assembly instructions.\u003cbr\u003e Note: For 84-E85 Evo Big Twin models, you must use an L85-91 style head bolt kit.\u003cbr\u003e These can be ordered separately as MCS 505266 (Gardner-Westcott) or 989599 (Colony) in standard lengths only.\u003cbr\u003e Note: The HD Aluminum Oil Pump (26190-73) or the S\u0026amp;S Oil Pump, MCS 519923, can be used on 70-91 applications.\u003cbr\u003e Note: In each and every application, the technician must be able to judge the components to determine their suitability in combination with the other engine components, prior to installation.\u003cbr\u003e It is important to have an experienced mechanic install and make any necessary adjustments.\u003c\/p\u003e\n\n \u003cp\u003eCompatible with: \u0026gt; 84-91 Evo BT\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":39971895345237,"sku":"MC512341","price":2317.02,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1606\/2595\/products\/512344k_1.jpg?v=1647274413","url":"https:\/\/california-motorcycles.com\/en\/products\/s-s-84-91-crankcase-assembly-std-bore-natural-for-harley-davidson","provider":"California Motorcycles","version":"1.0","type":"link"}