{"product_id":"crankcase-assembly-3-5-8-bore-natural-for-36-47-knucklehead-with-3-5-8-big-bore-cylinders-nu","title":"Crankcase Assembly 3-5\/8\" Bore Natural For 36-47 Knucklehead With 3-5\/8 Big Bore Cylinders NU","description":"\u003cp\u003eS\u0026amp;S SuperstockT 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 SuperstockT 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.   Note: S\u0026amp;S crankcases for 36-54 Knuckle and Panhead models will not take OEM flywheels; pinion or sprocket shaft since late style (1955-up) Timken bearings are used in all S\u0026amp;S cases. 55-up shafts will not fit 36-54 OEM flywheels; S\u0026amp;S does not recommend machining 36-54 flywheels to take 55-up shafts. For all 36-55 B.T. applic\u003c\/p\u003e\u003cp\u003e36-47 Knucklehead with 3-5\/8 big bore cylinders (NU)\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":43848882815196,"sku":"512327","price":1797.29,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/6881\/0972\/products\/512344k_e94cf977-d1e2-4347-a31c-0707ecff25b7.jpg?v=1679050859","url":"https:\/\/motosuperstore.co.uk\/products\/crankcase-assembly-3-5-8-bore-natural-for-36-47-knucklehead-with-3-5-8-big-bore-cylinders-nu","provider":"Moto Superstore","version":"1.0","type":"link"}