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Twin Cam B-Motor Balancer Mods

By William Denish, Photography by William Denish
  • Twin Cam Clamps
    10. Next, the two hydraulic chain tensioners are compressed using red factory assembly clamps. The two top chain guides with an internal leaf spring, balancer drive chain, and shaft sprockets are then installed.
    Twin Cam Clamps
    10. Next, the two hydraulic chain tensioners are compressed using red factory assembly cl
  • Twin Cam Black Plates
    11. To ensure the balance shafts are timed correctly, the three black-colored plates on the roller chain are aligned with the triangular timing marks on the three sprockets. The two balance shaft sprockets are marked "front" and "rear" and are not interchangeable.
    Twin Cam Black Plates
    11. To ensure the balance shafts are timed correctly, the three black-colored plates on
  • Twin Cam Roller Chain
    12. Shown is the roller chain's black-colored timing plate aligned with the timing mark on the crank's chain sprocket.
    Twin Cam Roller Chain
    12. Shown is the roller chain's black-colored timing plate aligned with the timing mark o
  • Twin Cam B Motor Assembled
    13. The two red factory assembly clamps holding down the hydraulic tensioners are removed, revealing the B-motor's completed balancer assembly. Note that the drive chain wraps under the crank sprocket.
    Twin Cam B Motor Assembled
    13. The two red factory assembly clamps holding down the hydraulic tensioners are removed
  • Twin Cam Flyewheel Cavity
    14. Shown is the flywheel cavity of a right-side B-motor case. The large roller bearing in the middle (red arrow) supports the crank's pinion shaft, the two smaller bearings (blue arrows) above it support the left side of the camshafts. Above the cam bearings are two piston oilers (green arrows) fastened to the case cylinder spigot bores. ThreeBond Liquid Gasket 1194 is used for sealing the cases.
    Twin Cam Flyewheel Cavity
    14. Shown is the flywheel cavity of a right-side B-motor case. The large roller bearing i
SOURCES
Short Block Charlie's
By William Denish
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