The Powerhouse Behind Champions: O.S. Engine Speed Tuned 21VZ-B V-Spec II World Edition
In the world of RC racing, where milliseconds can make all the difference, the O.S. Engine Speed Tuned 21VZ-B V-Spec II World Edition stands out as a game-changer. This engine is not just about raw power; it’s about precision engineering that delivers consistent performance under pressure. Designed with the competitive racer in mind, this engine has been fine-tuned to provide the edge needed to break records and win championships.
Engineering Excellence for the Competitive Edge
The O.S. Engine Speed Tuned 21VZ-B V-Spec II World Edition is engineered with numerous enhancements that set it apart from its predecessors. Its finely tuned components, including a hardened, chrome-plated 4-port liner and a specially coated crankshaft, ensure durability and smooth operation. The inclusion of a rear ceramic bearing reduces friction, enhancing the engine's longevity and reliability. Furthermore, the crankshaft's silicone filling optimizes air and fuel flow, boosting overall efficiency.
Proven Track Record
This engine's credentials are undeniable. It played a pivotal role in Atsushi Hara’s victory at the 2008 World Championships in Charlotte, North Carolina. With a remarkable runtime advantage, Hara managed fewer pit stops than his competitors, a testament to the engine's superior fuel efficiency and power management. Such characteristics make this engine a preferred choice for racers who aim for podium finishes.
Precision Tuning for Peak Performance
The Speed Tuned 21VZ-B V-Spec II comes with a 21JS slide-valve carburetor, offering flexibility with three different restrictor sizes (6 mm, 6.5 mm, and 7 mm) for precise tuning. This allows racers to customize their setup based on track conditions and personal driving style. The engine also features tungsten weights for enhanced balance at high RPMs, ensuring stability and control during intense races.
Specifications
- Displacement: .21 cu in (3.46 cc)
- Bore: 0.654 in (16.6 mm)
- Stroke: 0.63 in (16.0 mm)
- Practical RPM: 3,000-40,000
- Output: 2.5 hp @ 34,000 rpm
- Weight: 12.3 oz (349 g)
- Includes: 6 mm, 6.5 mm & 7 mm carb restrictors
The O.S. Engine Speed Tuned 21VZ-B V-Spec II World Edition is ideal for advanced racers seeking a competitive edge. Its combination of power, efficiency, and precision makes it a formidable contender on any track.
