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Thunder Mountain Custom Cycles Blackhawk 240 Softail - Performance Upgrade

Monster Motor Hop-up

By: Jim Houck, Toph Bocchiaro, Photography by Curt Lout
  • TMCC Blackhawk 240 Softail Softail Cam
    08. ...the cam support plate and cams were reinstalled back into the cam chest and the cam cover replaced with a fresh gasket.
    TMCC Blackhawk 240 Softail Softail Cam
    08. ...the cam support plate and cams were reinstalled back into the cam chest and the ca
  • TMCC Blackhawk 240 Softail Piston Component
    09. The HTCC pistons have a unique dome shape with a recessed area in the center resembling a peanut. Because of the shape, these pistons only work with the HTCC cylinder heads to obtain multiple squish bands, turbulence, and static compression ratio. This leads to a more complete burn during combustion, increasing efficiency and power.
    TMCC Blackhawk 240 Softail Piston Component
    09. The HTCC pistons have a unique dome shape with a recessed area in the center resembli
  • TMCC Blackhawk 240 Softail Piston Shape
    10. Here's another look at the unique piston shape as Larry installed the piston-pin lock ring.
    TMCC Blackhawk 240 Softail Piston Shape
    10. Here's another look at the unique piston shape as Larry installed the piston-pin lock
  • TMCC Blackhawk 240 Softail Piston Heads
    12. After both cylinders were in place, the heads were fitted with compression releases that will aid in starting the big, high-compression motor.
    TMCC Blackhawk 240 Softail Piston Heads
    12. After both cylinders were in place, the heads were fitted with compression releases t
  • TMCC Blackhawk 240 Softail Cylinder Head
    13. The ported HTCC heads are predrilled for the compression releases. The manual releases were inserted next to the spark-plug hole and tightened...
    TMCC Blackhawk 240 Softail Cylinder Head
    13. The ported HTCC heads are predrilled for the compression releases. The manual release
By Jim Houck, Toph Bocchiaro
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