Harley-Davidson Twin-Cam 88
Harley Davidson has an all new engine based on the forty-five degree V-twin
engine layout. It has many improvements for performance and durability, including
a more performance oriented bore to stroke ratio for high RPM horsepower,
and strength improvements in the bottom end and case.
| 1999 Harley Davidson-Twin Cam 88 Specs |
 |
Engine Type/Layout - 4 Stroke, 45 degree V2 Air Cooled
Displacement - 1,450cc
Bore - 3.75" Stroke - 4.00"
Compression Ratio - 8.8 - 9.0 to 1 (85cc head)
Nominal Peak Torque - 86 ft-lb torque at 3,500 rpm
Ignition System(Carb) - Sequential, non-waste spark, MAP-N control
or (EFI) - Sequential, non-waste spark, Alpha-N control
Cam System - Twin cams, chain driven with spring loaded tensioners
Oil system-pump - Twin georoter, dual scavenge, dry sump
Cylinder Head - Aluminum, with 85cc bathtub combustion chamber
Cylinders - Aluminum, high-pressure die cast with cast in SPINEY-LOK®
cast iron liner, O-ring base seal
Pistons - 3-ring, hypereutectic Aluminum cooled by oil jets
Crankcase - Aluminum, vertical split, high-pressure die cast
Bottom End Construction - Straight press fit pin, inline knife and fork
rods, needle roller rod bearing and right side main, Timken® left side main
The beauty of this new engine is the amount of durability built in, with
much stronger crankshaft, case, and bearings, along with the more performance
oriented bore to stroke ratio. Combined, these changes show this new design
to be well thought out with input from those that might want to take the
performance to maximum levels. And maybe best of all it still retains the
classic look and sound that Harleys are known for.
I can picture one of these new engines in a future Buell model with a stiff
lightweight frame, and higher output levels. This sounds like a vehicle I would
like to own, in the (hopefully) near future.
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