O.S. Engine 21VZ-B V-Spec AL Off-Road Performance Engine  [OS-13897]

O.S. Engine 21VZ-B V-Spec AL
Price:
AUD$703.62
Brand:
O.S. Engine
Model:
OS-13897
Condition:
Brand New
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High-Output Nitro Performance: O.S. Engine 21VZ-B V-Spec AL

The O.S. Engine 21VZ-B V-Spec AL is engineered to provide robust power and repeatable results for off-road competitors. Its construction and tuning focus on stability through extended sessions.

Durable Aluminium Construction for Hard Use

Aluminium parts on the 21VZ-B V-Spec AL help dissipate heat quickly and resist deformation under load. That durability is valuable for drivers who run multiple heats or aggressive tracks.

Race-Calibrated Carburetion and Balance

Featuring a slide valve carburetor and a matched exhaust, the engine is set up for crisp throttle transitions and torque where it matters. The precision-balanced crank reduces vibration for smoother handling at high revs.

Specifications

  • Carburetor: Slide Valve Type
  • Construction: High-Quality Aluminum
  • Compatibility: Ideal for 1/8 Scale Buggies
  • Special Feature: Precision-Balanced Crankshaft

For drivers focused on consistent lap times and reliable operation, the O.S. Engine 21VZ-B V-Spec AL is a practical choice that balances power and durability.

Which tuned pipe pairs best with this engine for torque?

Look for a pipe matched to the engine's rpm band and your gearing; a medium-length tuned pipe often balances midrange torque with top end for 1/8 buggies.

Can I use high-nitro fuel for more power?

Higher nitro increases power but also heat; if you increase nitro content, monitor head temps closely and adjust jetting to maintain safe running conditions.

How do I reduce vibration from the engine?

Ensure the crankshaft is correctly installed and balanced, check engine mounting hardware, and verify clutch engagement to keep drivetrain vibration to a minimum.

Is there a preferred break-in routine for this model?

Follow a staged break-in with short runs and progressive load increases, keeping an eye on plug colour and head temperature to reach a stable tune.

What clutch settings work well with this engine?

Set the clutch to engage smoothly without bogging; adjust shoe clearance and spring rates to match your vehicle weight and typical track surfaces.

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