Simms Vernier AMILCAR coupling. Please see both photos. Diameter at the tooth side 14,7 mm. (length 8mm). Diameter at the other side:15,7 mm. Asking price/your offer.
1935 Riley 15/6 Engine. Block has minor damage to the gear pump drive but this is easy repair. Comes with x2 crankshafts, x2 cylinder heads plus parts and castings to complete engine, including new hi-capacity oil pump and rebuilt water pump. Option of 63.5mm (1808cc) or 62mm (1726cc) pistons. Additional parts - original works Riley racing clut..