Timing Chain Duplex Double Row Triumph & Austin Healey - Rolon Brand 2H4286
Timing Chain Duplex Double Row Triumph & Austin Healey - Rolon Brand 2H4286
Timing Chain Duplex (Double Row) Triumph & Austin Healey - Rolon Brand 2H4286
Duplex Timing Chain. Rolon Brand 2H4286
Duplex (double row) Timing Chain. 2H4286 / 145870
A duplex (double-row) timing chain offers significantly greater strength, durability, and reliability for BMC A-Series engines compared to the standard simplex (single-row) setup.
Key Advantages
* Increased Strength and Durability: The twin-row design shares the mechanical load across two sets of links, making it far more resistant to heavy stress.
* Reduced Stretching and Wear: It resists elongation (stretching) much better than a single chain, keeping valve timing accurate for a much longer lifespan.
* Better Handling of High-Performance Valve Trains: It is ideal for engines running upgraded, high-lift camshafts or stiffer valve springs that put extra physical demand on the timing gear.
* Elimination of Trouble-Prone Tensioners: Standard single chains rely on small rubber tensioner rings that wear out quickly and rattle; a duplex chain maintains proper operation through a precise fit without needing those weak plastic or rubber tensioners.
* Maintains Valve Timing Accuracy: Prevents the ignition and valve timing from slipping out of specification under high RPM or racing conditions.
As typically found in the following vehicles:
Triumph GT6
Triumph TR5
Triumph TR6
Triumph 2000
Triumph 2.5.
Austin Healey BN7
Austin Healey BT7
Austin Healey BJ7
Austin Healey BJ8
TR Register
