Harley Davidson Evolution Vs Twin Cam

2001 Harley Twin Cam B Softail Carbed complete 36k miles BlackChrome 1500.

Harley davidson evolution vs twin cam. However some Evo owners opted to install what is called a Carlini or Screamin Eagle Race Brace on the right side that effectively interconnected the crank case and transmission to suplement the strength or lack thereof of the stressed primary on the opposite side. The Evolution engine is an air-cooled 45-degree V-twin engine manufactured from 1984 by Harley-Davidson for the companys motorcycles. Harley Evo vs Twin Cam Engine Systems Similarity.

Add that to an 8-valve engine with a 55mm throttle body flowing 50 more air than the Twin Cam and they were able to crank a lot more power out of the new engine. Its also a much larger displacement. Lemmy at Revzilla broke down all the improvements on this here.

Harley Davidson 5-Speed Transmission EVO BlackChrome 1999 9k miles Softail 999. The old Twin Cam. Essentially the Evo engine has a much more efficient combustion chamber and head design and can produce more horsepower and torque than the TC 88 for a given cylinder volume.

That makes it the last true H-D engine as far as Im conserned. There are some clear differences between the engines. And then there is that heat issue.

Only the Twin-Cam has the crank-case to trans interface. The new design runs so cool Harleys engineers were able to crank compression as high as 1051. Besides that they all have modified models for each line ideal for the legends of the line.

Design and development problems. As a result their design focuses on giving superb power accuracy and performance. For Twin Cam 88 engine information look for the TC88 label next to the horsepower number.