Components Of A TC88B Engine

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Components Of A TC88B Engine

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Components Of A TC88B Engine - 1/9/2006 8:17:40 AM

HDF Tech

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TwinCam 88B Engine

Perhaps more than any other marque, Harley-Davidson motorcycles have been defined by their V-Twin engines. The unmistakable look, feel and sound of a Harley-Davidson V-Twin has been the cornerstone upon which many great motorcycles were built. Last year’sTwin Cam 88 turned the conservative into a foundation and the new counterbalanced Twin Cam 88B completes the structure.

TwinCam88 Balancer Closeup

The Twin Cam 88B was designed in a parallel program alongside the critically acclaimed Twin Cam 88 introduced in 1999. Twin Cam 88B carries over many key components, and will be built on the same assembly line. In fact, above the cylinder-base gasket, the two 88s are nearly identical.

Balancer Chain Drive System

The 45-degree air-cooled Twin Cam 88B features the same 1450cc displacement with identical bore and stroke as the Twin Cam 88. It breathes through the now familiar Twin Cam 88 oval air cleaner and single 40mm CV carburetor and utilizes a single-fire ignition system for improved performance, just like the Twin Cam 88.

Balancer System Components

It’s below the base gasket where things get interesting: There the Twin Cam 88B features twin counter rotating balancers to fully cancel primary engine vibration. The balancers, tightly packaged within the engine, dramatically improve the rideability of the rigid-mount Softail models. The counter-balanced Twin Cam 88B allows for the true long distance in riding comfort Softail owners have asked for.

New Splined Cam Sprocket

Thumb the starter on a Twin Cam 88B nestled in its rigid-mount Softail frame, and you'll notice immediately the almost eerie lack of primary vibration. The renowned Harley-Davidson sound is there, transmitted nicely through a new free flowing exhaust system with enlarged mufflers (and relocated or reduced size lower exhaust interconnects on most Softail models) but the feel is quite different.

Balancers and Crankshaft

Of course, The Twin Cam 88B improves the 2000-model Softails versus the previous Evolution-powered models much in the same way the Twin Cam 88 did for the 1999 Touring and Dyna models. The Twin Cam 88B delivers the power and torque enthusiasts have come to expect in the new Harley-Davidson engines.

New right side main bearing/retainer plate and balancer oil path

Drop the Twin Cam 88B into gear and you'll notice another big difference: a 50% reduction in shifter effort courtesy of a new shifter mechanism and new transmission case.

The Twin Cam 88B is finished in black on black for the FXSTB, silver for the FXST and black and chrome on all other Softail models. The new, larger oil tank features a new design that reduces the welded area by 70% to enhance styling. Additional styling details include new chrome external oil lines, reminiscent of such classics as the 1941 FL Knucklehead.

Source: barriehd