Description
2B4 Marine Engine Damper Drive Plate from R&D Marine
Fitted between the boat engine and the gearbox input shaft, a damper drive plate is designed to transmit the engine power to the gearbox, whilst reducing transmitted gear noise and providing a cushioned drive when selecting gear. All R and D Damper Drive plates include a ‘failsafe’ design.
Drive plate 2B4 can usually be used to replace the following Borgwarner Velvet Drive damper plates:
10-04-650-002 / 1004-650-002
10-04-650-402 / 1004-650-002
AS1-K1C / AS1K1C
AS12-K1C / AS12K1C
AS4-K1C / AS4K1C
Also called the Driven Plate, Damper Plate or Clutch Plate, the 2B4 Damper Drive Plate is from the R and D Loop element range. Common applications for the 2B4 drive plate include BMC, Ford and Perkins engines which have a flywheel with the 6.125″ diameter fixings aperture.
R&D drive plate technical details:
– Spline: 26 teeth 20/40 DP (35.4mm diameter) for Borgwarner 70, 71, 72 & 73 gearboxes, PRM Inline gearboxes, Paragon P series, Technodrive TN90, 170, 260, 345, 485, 545 & 880 gearboxes, TMP 1200 & 1500, Twin Disc 501 & 502 gearboxes, some – Volvo Saildrive ZF IRM & Hurth HBW 250 and HSW gearboxes.
– Diameter of drive plate back plate which bolts to the engine flywheel: 155.45mm (6.125″)
– Back plate fixing holes: The small back plate has 5 x 6.35mm holes (0.25″) on 142mm PCD (5.593). This was a very common fixing arrangement for BMC, Leyland, Thornycroft and Perkins engines
– Drive plate maximum thickness: 32mm (1.25″)
Fitted with a type B loop element for 135Nm 100 ft lb torque, which can be mounted either round on the flywheel and rotated in either direction. This drive plate element will provide linear stiffness up to 3 degrees of deflection and is failsafe.
If you are unsure or need any assistance choosing your drive plate please contact our customer support department who will help you find the right parts for your application.
