Page 23 - Austin Healey 100S

parts are interchangeable with original 100S ALUMINIUM CYLINDER HEADS 1 Made with the use of the original works pattern 0 equipment cast in LM25 heat treated and fully 0 computer machined . S Available with precision ground, replaceable, lead- E free valve seats of the latest material and N complemented by our top quality valves, guides, G springs and top caps fully interchangeable with the I originals. N Available in two specifications. E STANDARD - unassembled with valves, guides, springs and top caps etc. FULLY GAS FLOWED -fully assembled, ready to fit. ROLLER ROCKER KIT OIL PUMP DRIVE SHAFT Comprising of roller rocker arms made from Reproduction of the original which incorporates the aircraft specification aluminium, offset steel posts, slot drive for the original 100S distributor drive spacers and 100S shaft. These are fully tower. VALVES assembled, ready to fit. They are considerably Made from one-piece forgings in 214N stainless lighter and a higher ratio than standard and steel with stellite tips and tuftrided. Suitable for therefore not only reduce valve guide wear both leaded and unleaded fuel. These are made to but also give increased valve lift the lightest design with original head diameters. (1.65:1 theoretical ratio). COLISBRO-BRONZE VALVE GUIDES These are essential in all engines with gas flowed ports whether aluminium or iron and engines converted to lead-free fuel. 23 +44 (0) 1543 472244