This fully assembled Harley-Davidson Engine named the SE 120R (120 stands for cubic inch and letter R for Race)) is designed only for off-road and racing use.
18 On the left is an SE 266E cam and on the right is an OE cam. The SE 266E cams have a modern lobe design that allows for higher valve lift for a given duration.
Racer57 brings a realistic view to this, and he’s right, either a 120r, or an S&S motor will need some expensive additional components to make it work correctly.
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What do you guys think of a SE 120R complete engine for a reliable touring build ridden conservatively. I’ve just been thinking a complete engine swap may be the way …
Oct 01, 2010 · Today’s dyno of the new Screamin’ Eagle® pro SE 120R High Performance Crate Motor on our 2011 Fat Boy Lo! This track-ready 120 cubic inch Screamin’ Eagle …