S & S MK136 Black Edition Engine
S Cycle is introducing what it describes as " the next generation of ' Proven Performance ' for 2017 and newer H-D Touring models " - the 49-state MK136 engine . This is the newest version of the complete crate engines S & S has been known for since it introduced its first ever , game-changing , scratchbuilt 98 "/ 1,600 cc ' Sidewinder ' in 1993 . Building on the popularity of the 1,200 cc ( 73 ") ' Shovelhead ' style engine it had
" stock 2017-2023 oil-cooled M-8 frame "
launched in 1990 , the ' Sidewinder ' exploited the market opportunity that Harley themselves created a couple of years later when it withdrew from the crate motor segment . The rest , as they say , is history . This ' ready-to-install ' Black Edition 136 incher ( 2,220 cc ) slips into the stock 2017-2023 oilcooled M-8 frame . S & S took its MK-Series crankcases , married them to the 136 ” cylinders and flywheels , and then fitted high-flow cylinder heads with .. The seats , guides , valves , seals and + 1 mm oversized intake and exhaust valves are all premium grade . The valves are . 030 ” longer than stock for improved valvetrain geometry (. 605 ”
" valves are . 030 " longer than stock "
max . lift valve springs ) and the high-strength alloy used in casting the cylinder heads gives the improved strength at high temperatures that is needed . There is an enlarged cooling passage around the exhaust seats , and the MK136 uses S & S exclusive breather boxes , forged pistons , an S & S performance oil pump and cam support plate , with premium tappets and tappet cuffs . Sprocket shaft spacer is included , with Champion spark plugs . The MK 136 retains the stock engine height . The crankcase has patented dual-spray piston cooling jets , a precision-machined oil scraper ,
enlarged oil sump and a contoured floor to allow oil to easily drain back to the sump . There are 49-state and race only versions available .
S & S CYCLE INC . Viola , Wisconsin , USA Tel : 608 627 1497 sscust @ sscycle . com www . sscycle . com
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