{"product_id":"s-s-84-91-crankcase-assembly-std-bore-natural","title":"S\u0026S, 84-91 crankcase assembly, STD bore. Natural","description":"\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eS\u0026amp;S Superstock™ crankcases, made from 356-T6 aluminum, are much stronger than the OEM case. OEM cases can\/may break in high performance or even stock applications, like more than a few of us found out the hard way. These S\u0026amp;S Superstock™ cases can be used for both stock replacement and racing applications. Important to the engine builder are the substantial savings in labor when using S\u0026amp;S cases. These cases come 'set up' with sprocket shaft Timken main bearing races and cam needle bearings installed and pinion shaft main bearing race pressed in and line-honed. Additional parts that are supplied include Timken sprocket shaft bearings, cylinder studs, nickel plated case bolts, crankcase fittings, oil pressure sensor, timing \u0026amp; magnetic crankcase drain plugs and a special S\u0026amp;S design alternator stator plug clamp screw. The flywheel scrapers are machined to match the original 8-1\/2\" diameter flywheels. S\u0026amp;S cases maximize crankcase oil scavenging efficiency by using a 'ported' design breather passageway. S\u0026amp;S cases are clearanced up to and including 5\", no additional clearancing for strokers will be necessary. S\u0026amp;S cases come complete with assembly instructions. \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eNote: For 84-E85 Evo Big Twin models you must use a L85-91 style cylinder head bolt kit. These can be ordered separately as MCS 505266 (Gardner-Westcott) or 989599 (Colony) in standard lengths only. \u003cbr\u003e\u003cbr\u003eNote: The aluminum H-D oil pump, (26190-73) or the S\u0026amp;S oil pump, MCS 519923, can be used in 70-91 applications. \u003cbr\u003e\u003cbr\u003eNote: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components, prior to installation. It is of importance that a knowledgeable mechanic will install \u0026amp; make adjustments as required.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctr\u003e\n\u003cth\u003eUnit\u003c\/th\u003e\n\u003ctd\u003eSET\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/table\u003e\u003ch2\u003eFitment\u003c\/h2\u003e\u003cp\u003e84-91 Evo Big Twin (NU)\u003c\/p\u003e\u003ch2\u003ePart numbers\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSupplier SKU\u003c\/th\u003e\n\u003ctd\u003e512341\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part\u003c\/th\u003e\n\u003ctd\u003e31-0000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":58622670963032,"sku":"512341","price":1881.61,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8235\/0680\/files\/512344k_3dfcc573-1cef-484c-9528-ca926d5fccb3.jpg?v=1790966626","url":"https:\/\/deathproofcycles.com\/products\/s-s-84-91-crankcase-assembly-std-bore-natural","provider":"Deathproof Cycles","version":"1.0","type":"link"}