Beschreibung:

BRM Twin Cam Phase 4 interest. Comprising notes on the meeting with Lotus Components Limited, 16th September 1966, Type 84 phase III engine information for the Rubery Owen modified Ford Lotus Cortina engines, camshaft and connecting rod handwritten calculations, original prints of connecting rod assembly drawing no. B2453, connecting rod assembly drawing no. B2450, inlet cam profile-Ph IV engine assembly drawing no. B2738, connecting rod cap forging assembly drawing no. B2448, connecting rod forging assembly drawing no. C1160, together with a graph of the phase 4 P99 inlet cam profile.