CJ2A: Drivetrain Systems - The JeepsterMan

CJ2A: Drivetrain Systems

Tech Specs CJ-2A: Powertrain & Drivetrain Insights

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Take a closer look at what makes the Willys Jeep CJ-2A a true mechanical marvel. In this segment of our series, we'll dissect the core elements that power the CJ-2A's performance, from its durable clutch system to the reliable drivetrain components. These engineering features have been the driving force behind the Jeep's enduring legacy. Join us as we demystify the intricacies of the CJ-2A's powertrain and drivetrain, providing a glimpse into the sturdy design that has made these vehicles timeless classics. And, if you're in search of authentic Willys Jeep parts, JeepsterMan has you covered!

Clutch Specifications:

Transmission Specifications:

  • Transmission Name & Type: T-90, 3-speed manual transmission
  • Gearing: Forward gears - Low, 2nd, High; Reverse gear
  • Shift Pattern: H-pattern with a "3 on the tree" shifter
  • Synchronization: Synchronized in 2nd and 3rd gears
  • Gear Ratios:
    • 1st Gear: 2.80:1
    • 2nd Gear: 1.57:1
    • 3rd Gear: 1.00:1
    • Reverse Gear: 2.78:1
  • Output: Transmission output shaft connects to the transfer case for power distribution

Transfer Case Specifications:

  • Transfer Case Name: Dana Spicer Model 18
  • Transfer Case Type: Gear-driven, part-time 4WD
  • Gearing: High range (1:1), Low range (2.46:1)
  • Shift Mechanism: Twin stick configuration (one for range, one for front axle engagement)
  • Output: Outputs to front and rear drive shafts
  • Operation: Part-time 4WD engagement for off-road and low-traction conditions

Front Axle Specifications:

  • Front Axle Type: Spicer Model 25
  • Ring & Pinion Ratio: 5.38:1
  • Axle Shafts: One-piece, semi-floating
  • King Pin: Crucial component in the front axle assembly, facilitating steering movement and supporting the spindle, essential for proper control and maneuverability.
  • Operation: Manual locking hubs, part-time 4WD

Rear Axle Specifications:

Stay tuned for Part 6 of our CJ-2A Blog Series: exploring steering, suspension, brakes, & wheels - key elements that define your classic Jeep's performance! For all your vintage Jeep needs, visit JeepsterMan - Your trusted source for genuine Willys Jeep parts.

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