Page 543

2016roadiron

543 PERFORMANCE VALVE SPRING SETS JIMS® Springs are made from the highest grade materials, heat treated to the highest industry standards, then torture tested on the street and the track to ensure not only consistent quality, but unmatched performance as well. JIMS® Spring Kits incorporate an interference double spring design with damper. The damper keeps the inner and outer spring coils from locking together, while controlling power robbing harmonics in the spring. Description Application Seat load Open load Coil bind Rate Lbs/In 53-0615 1.460 Double Spring w/damper 84-04 EVO/Twin Cam®** 125@1.800 275@1.300 1.150" 300 53-0616 1.540 Double Spring w/damper 84-04 EVO/Twin Cam®** 195@1.900 515@1.250 1.175" 492 53-0617 1.550 Double Spring w/damper 84-04 EVO/Twin Cam®** 230@1.875 700@1.200 1.100" 696 53-0608 1.510 Double Spring w/damper 84-04 EVO/Twin Cam®** 184@1.850 422@1.280 1.080" 425 S&S® HIGH-PERFORMANCE VALVE SPRING KITS S&S® valve spring kits are designed to simplify high-lift cam installation and increase spring force to reduce the risk of valve float. The design of S&S® valve springs eliminate most of the complicated procedures and specialized tools required to prepare cylinder heads for high lift cams. While confirming critical clearances remains the responsibility of the engine builder, the majority of street cams will require no additional modification of the cylinder head when S&S® valve spring kits are used. In some instances, S&S® valve spring kits serve as excellent replacements in stock rebuild applications. All kits include detailed instructions. S&S® high-performance valve Spring kits for Twin Cam 88®, evolution® Big twin engines, Sportster® and Buell® models .640” lift triple valve Spring Kit Fits S&S® Super Stock® cylinder heads, and fit in stock 99-02 Harley- Davidson® Twin Cam 88® engines, 84-99 Evolution big twin engines and 86- 01 Sportster® and Buell® models. S&S® high performance valve springs may also be used in any other heads that require stock O.D. outer spring. Includes 4 top collars, 4 bottom collars, 4 each outer, middle, and inner springs, 8 shims (4 each .015”, 4 each .030”), and 8 keepers. Use with shoulderlessstyle valve guides. Special keepers included fit valves with stock 5⁄16” stems and S&S® collars only. Spring seat pressure is typically 170 lbs. at stock 1.800” installed height. Open pressure is 390 lbs. at .560” lift, 415 lbs. at .630” lift. Patented steel top collars are drilled for lightness and to increase cooling oil flow over valve springs. Kits are available with low mass titanium top collars for very high performance applications. For 84-04 Big Twin Engines and 86-03 Sportster Models 50-2074 Kit w/steel top collars 50-2075 Kit w/titanium top collars. S&S® high-performance valve Spring Kits for 48-84 Big twin engines .550” lift double valve Spring Kit For 48-84 big twin with up to .550” lift. Includes 4 inner springs, 4 outer springs, and 4 aluminum top collars. Use with stock-style bottom collar, valve guides, valves with stock 3⁄8” stem, and stock keepers. Compatible with thin-stem valves if thicker keepers that maintain correct valve stem-top collar engagement are used. Late single bottom collars are available for use in S&S® cylinder heads for shovels and stock late 81-85 heads. NOTE: Panhead engines usually require clearancing between rocker cover and top collar. For 1948-1984 Panhead and Shovelhead Engines 50-902053 48-84 Big Twin for up to .550” lift 50-902038 Bottom Collar (each) – Late 81-85 .590” lift triple valve Spring Kit For 48-84 big twin with up to .590” lift. Includes 4 top collars, 4 bottom collars, 4 each outer, middle, and inner springs, shims, and 8 keepers. Use with stock valve guides, stock valves with 3⁄8” stem, and stock keepers. Compatible with thin-stem valves if thicker keepers that maintain correct valve stem-top collar engagement are used. 48-84 Panhead and Shovelhead Engines 48-Early 81– For up to .590” lift 50-902060 Kit w/steel top collars Late 81-84 and All S&S® Cylinder Heads For up to .590” lift 50-902063 Kit w/steel top collars 50-902064 Kit w/titanium top collars


2016roadiron
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