The engine is equipped with Electronic Sequential Port Fuel Injection (ESPFI) and is mated to a 6-speed Cruise Drive® transmission. Twin Cam 103™ engine with 103-cid (1690cc), rubber-mounted within the frame, is rated at 100 ft. Harley-Davidson offers more Big Twin performance for 2012 as its Twin Cam 103™ powertrain is standard equipment on Softail® and Touring motorcycle models and most Dyna® motorcycle models. MORE HARLEY-DAVIDSON MODELS WITH TWIN CAM 103™ POWER IN 2012 They make great desktop wallpaper.Ģ012 Harley-Davidson Twin Cam 103 V-Twin EngineĢ012 Harley-Davidson FXDF Dyna Fat Bob with Twin Cam 103Ģ012 Harley-Davidson Twin Cam 103 V-Twin Engine Review Very comfortable WorldSBK San Juan for BMW Newsīack to 2012 Harley-Davidson Motorcycle Model Review PageĬlick photos to enlarge.2021 WorldSSP Champion in Argentina Winner Crowned News.Prestigious International Six Days of Enduro overall results News.2022 Ducati: Land of Joy 2022 Motorcycle Models.Top-10 BSB Bennetts British Superbike Championship finishes News.Spa-Francorchamps circuit Belgium added to 2022 Endurance World Championship calendar News.Record Third Quarter for Motorcycle Sales News.Three-way Argentina tango at WorldSBK Penultimate Race News.National Hare & Hound Lovelock – EnduroCross Reno – Buckwheat 100 GNCC Newburg News.Return to Italy for MotoGP Emilia-Romagna Grand Prix News.MotoGP Ducati’s home track Emilia Romagna News.Excitement Mounts for MXGP Trentino Tripleheader News.
YXZ1000R European Cup SuperFinale Portalegre News.Red Bull KTM Factory Racing team racer Inking two-year deal News.Riders manufacturers and teams standings 2021 FIM Superbike World Championship News.In general, higher compression ratios need longer duration cams Bolt in type cams are intended for stock compression ratios. This is the main benefit of a good performance camshaft and properly tuned engine.įor an engine with a cam properly matched to the displacement and compression ratio, the net result will be more power at middle and higher engine speeds. But with a longer duration cam and a higher compression ratio, power at middle and high speeds will be increased which is what you wanted all along. A cam with a longer intake duration will reduce static compression pressure at low speed which in turn will tend to reduce low RPM torque. Changing cams is the easy way to more torque in the 2000-4000 RPM range. While bigger cams may have a higher peak horsepower, more conservative cams may feel stronger to a street rider because the max torque occurs at lower RPM. Street bikes will often perform better with a mild cam than more radical cams. It is important to note that too much cam sometimes results in poor low RPM power. Here is a short summary of modifications listed in the order of increasing cost and installation complexity. Almost every type of engine modification imaginable has been performed on H/D engines. To get the best cam for your bike all these factors have to be taken into account. Have the intake and exhaust ports been changed to result in better flow efficiency? Does the engine have higher than stock compression ratio to take advantage of a longer duration cam? Is the bike lighter like a Dyna or heavy bagger? Engine/Bike combination: This question relates to displacement (cubic inches), compression ratio, bike weight and what kind of cylinder head modifications have been done. In other words is your riding style conservative or aggressive?ģ. Type of riding: Do you spend a lot of your time riding two up on highway trips or is it more important to have the most power you can get. Primary application: Is the bike going to be used for all around street riding or is the goal to have an engine which is running at the maximum torque and horse power for track or drag racing?Ģ. The three questions to answer before choosing a new cam for your Harley Davidson® motorcycle are:ġ. Keep in mind that performance camshafts are usually chosen for the basic purpose of producing more power from your engine. While there are no hard and fast rules for picking a cam for a specific application, some basic guidelines are worth considering.
The question "What cam should I buy for my bike?" is the one we often hear.