Basic Stage Two Engine Design
The Stage Two Basic engine represents a more extensive
approach to improve engine performance with bolt-on components and a bolt-in camshaft.
Most people can perform these modifications themselves. Modifications over stock engine
are underlined in the list below. The estimated cost for these modifications ranges from
$700 to $1000. The performance return for these changes can be large for the dollars
spent. Increases up to 30 HP and 20 Ft.Lbs of torque can be seen on some bikes.
The major changes for a Stage Two Basic engine over the Stage One Advanced is the addition
of an Andrews camshaft.
Year: 1999 FXD
Model: Twin Cam
Owner: Robert Jensen
Crankshaft and Flywheel: H-D
Intake Valves: Stock Diameter
Exhaust Valves: Stock Diameter
Valve Springs: H-D
Compression Ratio: 10.25:1
Cam: Andrew TW-50
Carb Jetting Information: 190 main jet, 48 Slow jet
Air Cleaner: Screamin Eagle K&N
Ignition: Screamin Eagle 6000 RPM street module
Coil: Screamin Eagle Dual Fire
Pipes: H-D Vance and Hines 2-1
Dyno Tuning Facilities: H-D of Rocklin