The TH12-6 camshaft, developed by Kent Cams for Triumph Tune, is a high-torque camshaft designed for Triumph engines. It boasts a power band of 1500-6500 RPM and a duration of 270. This article delves into the specifications of the TH12-6 and compares it to the stock camshaft found in a 1972 Triumph TR6.
TH12-6 Camshaft Specifications
Kent Cams, a renowned triumph car tuning specialist in Kent, designed the TH12-6 with specific timing and lift figures. The timing is set at 31/59 67/23, while the lift at 104 ATDC/BTDC measures 0.41 for the inlet valve and 0.46 for the exhaust valve. This camshaft is specifically engineered to provide increased torque across a broad RPM range, making it suitable for both street driving and highway cruising.
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Comparing TH12-6 to the 1972 TR6 Stock Camshaft
The 1972 Triumph TR6 originally came equipped with a camshaft featuring a timing of 18-58-58-18, a duration of 256, and a lift of 240 at the cam. Its power band is considerably narrower, ranging from 2000-5000 RPM. The TH12-6, with its extended duration and increased lift, promises improved performance throughout the entire rev range of the Triumph engine. While the increase in lift might not drastically improve performance due to the inherent limitations of the Triumph’s “bathtub” combustion chamber design, the broader power band of the TH12-6 should provide a noticeable difference in driving experience.
Real-World Application and Tuning Considerations
Installing the TH12-6 camshaft in a Triumph TR6 will likely require adjustments to the carburetors and timing to optimize performance. Finding the “sweet spot” will ensure the engine runs smoothly and efficiently with the new camshaft. While a noticeable performance improvement is expected, especially in low-end torque and high-RPM power, the overall driving experience will be enhanced with a wider usable power band.
Conclusion: TH12-6 – A Worthy Upgrade for Triumph Performance?
The TH12-6 camshaft, developed by a triumph car tuning specialist in Kent, offers a compelling upgrade for Triumph owners seeking enhanced performance across a wider RPM range. While not a radical departure from the stock camshaft, the TH12-6’s specifications suggest a noticeable improvement in both everyday driving and highway performance. With proper tuning and adjustments, this camshaft promises to unlock the true potential of the Triumph engine.
