Harley evo camshaft series#

Go for a Twin Cam if you’re not too mechanically inclined and wouldn’t want to work on your bike with a wrench. But there is no denying that a Twin Cam has less of a mechanical hassle than Evo. Harley has done a good job designing them both to be reliable and fail-proof. Mechanical Reliabilityīoth bikes are reliable. So if you are someone who finds smoother vibrations to be boring then Twin Cams aren’t for you.īut if you are planning for long rides on your bike then be aware of the Evo vibration, which may start to grow upon you as you travel for longer periods of time. Many people find this exciting and worthwhile. Therefore they give a more rugged and muscular feel through their strong vibrations. Twin Cam’s have a direct rubber mount attachment to the transmission casing.īut the Evo transmission is displaced from the motor. If you have ridden both an Evo and Twin Cam, then you already know that the two engines vibrate very differently.

Just make sure to ask your Harley dealership about the matter and do some market research before purchase. But Evo users are most likely to face it due to the engine belonging to an older lineup.ĭon’t let this make you shy away from your engine of choice.

Twin Cam users may also face spare part availability issues, as this problem differs from region to region. Often the local dealership isn’t able to provide spares for the Evo. Any person going for an Evo must always consider the availability issue. Availability of SparesĪnother common concern among Evo users is the availability of spares. Lastly, the combustion chamber is D-shaped. The tank is around the battery, under the saddle.

Harley evo camshaft series#

The combustion chamber is bathtub shaped and has higher compression.Īnd in the Evo engines, the pump is external and the route runs through the filters and a series of gears. The oil tank is below the transmission assembly. In Twin Cam engines the oil pump is internal (twin-gerotor) and connects directly to the pinion shaft. Oiling System and Combustion Chamberīy the late 90s, Harley had brought significant changes aiming stability because they realized that the oil has to go through an extreme mechanical load, quicker response, and high operating temperatures. They didn’t even have to compromise the reliability of the engine for this improvement. Through the two cam system, Harley was able to introduce bigger and powerful motors. Lesser pushrod angle permits more cam lift. On the contrary, the Twin Cams have a lesser pushrod angle due to having two. So Evo engines have higher pushrod angles because of having one cam. We know that the lesser the cam, the higher the pushrod angle. That is transferring motion from the lobe of the camshaft to the valve. It doesn’t matter how an engine is designed, pushrods will always have that one specific purpose. The Evo has only one cam with four lobes and their cam drive is in gears. Twin Cam has two cams, one in each cylinder. The first notable difference lies in the name. Currently, they come in 883 cc, 1100 cc, 1200 cc, and 1337 cc versions. Harley discovered the highly rebuildable Evolution engine otherwise known as the Evo engine back in 1984.

Let’s see what more makes this comparison a neck to neck battle: Displacement The core differences between these engines will definitely depend on different metrics such as displacements, mileage, performance, etc. Differences Between Harley Evo vs Twin Cams Let’s dive in to know more about the in-depth differences based on several noteworthy factors. That is why we have decided to explain which one is best for you and why. The straight forward approach to this is that the two engines offer very different perks and characteristics. Harley Evo vs Twin Cam has been an everlasting battle since it began during the late 90s.