Supra Competition Clutch Stage 2: How Much HP Can It Handle?
The Supra's potent engine begs for a robust drivetrain, and the Competition Clutch Stage 2 is a popular upgrade for serious enthusiasts. But the burning question many owners have is: just how much horsepower can this clutch reliably handle? The answer isn't a simple number, as several factors influence its performance and longevity. Let's delve into the specifics.
What is the Supra Competition Clutch Stage 2?
The Competition Clutch Stage 2 is designed as an upgrade for the Toyota Supra's factory clutch, offering significantly increased clamping force and durability compared to the stock unit. It's intended for modified Supras experiencing increased torque and horsepower outputs beyond the stock engine's capabilities. It's a significant step up from a Stage 1 clutch, promising a more robust experience, especially for aggressive driving styles and track use.
How Much Horsepower Can the Stage 2 Handle?
Competition Clutch itself doesn't publish a single horsepower rating for their Stage 2 clutch. This is because the clutch's lifespan depends heavily on factors beyond just horsepower figures. Instead of a simple horsepower number, think of it in terms of torque capacity. While horsepower is important, it's the torque that truly stresses a clutch. A higher torque number, especially at lower RPMs, places greater demands on the clutch disc.
Competition Clutch's Stage 2 is typically rated to handle significantly more torque than the stock Supra clutch. While the exact numbers aren't definitively published, many users and tuners report successful use with modifications pushing well beyond 500 wheel horsepower (whp). However, this varies based on several interacting factors.
What Factors Affect the Stage 2 Clutch's Lifespan?
Several factors impact the longevity and performance of the Competition Clutch Stage 2, including:
- Driving Style: Aggressive launches, frequent high-RPM shifts, and consistent slipping will significantly shorten the clutch's lifespan regardless of the horsepower output.
- Engine Modifications: Beyond horsepower, the type of modifications matters. Forced induction upgrades, like larger turbochargers or superchargers, generate significantly more torque than naturally aspirated modifications. This increased torque puts more stress on the clutch.
- Transmission Condition: A worn or damaged transmission can amplify the stress on the clutch, leading to premature failure.
- Tuning and Calibration: Improperly tuned engine management systems can lead to erratic torque delivery, putting excessive strain on the clutch.
How Long Will the Stage 2 Clutch Last?
The lifespan of the Stage 2 clutch is highly variable. With conservative driving and a well-maintained vehicle, some users report thousands of miles of reliable use even at higher horsepower levels. However, aggressive track use or consistently high-torque applications may lead to a significantly shorter lifespan. It's not uncommon to expect a replacement within 10,000-20,000 miles under strenuous conditions.
What are the Alternatives?
For those pushing significantly higher horsepower targets (e.g., 600 whp+), more robust clutch options, such as triple-disc clutches, may be necessary for reliable performance. These options often come at a higher cost and may require more significant modifications to the transmission.
Conclusion:
The Supra Competition Clutch Stage 2 is a popular and capable upgrade, but its lifespan depends on a complex interplay of factors beyond just horsepower. While it can comfortably handle substantial horsepower gains, the driving style, supporting modifications, and overall vehicle maintenance heavily influence its longevity. Focus on responsible tuning and driving habits to maximize its performance and extend its life.
