CNC Ported Cylinder Head – Reconditioned – Road Use

Description CNC Ported and reconditioned cylinder head – Road use This cylinder head has had the inlet ports CNC ported to 28mm diameter Exhaust ports have not been CNC ported Valve guides have been replaced and reamed The valve seats have been recut for our performance normally aspirated 37mm inlet and 32mm exhaust valves All faces have been skimmed and the threads for the cam carrier studs have been heli-coiled Core plugs have been removed, head vapour blasted internally and externally then core plugs replaced and pressure tested New stainless steel water outlet has been fitted for the heater pipe The head has been hardness tested and is above 85 Brinell hardness Competition engine heads are ported to 29mm and the exhaust ports are also lightly ported This is an outright price not exchange and these are on the shelf ready to ship . . You May Also Like: Excel Rear Lower Wishbones – Used Why Not Follow Our Facebook Pages: Lotusbits Ltd Lotusbits Rally Team History: The Lotus excel (Type 89) is a sports car designed and built by British automobile manufacturer Lotus Cars from 1982 to 1992. It is based on the design of the earlier Lotus Eclat, which itself was based on the earlier Lotus Type 75 Elite. Toyota And Lotus: Toyota engaged Lotus to assist with the engineering work on the Supra. During this period, Toyota became a major shareholder in Lotus, later giving up their holding when General Motors bought Lotus. Part of the deal between Lotus and Toyota included the use of many Toyota mechanical components in Lotus’ cars. The original Excel (aka the Eclat Excel) used the W58 manual transmission, driveshafts, rear differential, 14×7 inch alloy wheels, and door handles from the A60 Supra. The engine was the familiar all-aluminium, DOHC 2.2 L Lotus 912 slant-four engine also used in the Lotus Esprit S3. Development: Launched in October 1982, the Excel received two major upgrades during its 10-year production run. With the introduction of the Excel SE in October 1985, the bumpers, wing and interior were changed, including a new dashboard. In October 1986 the Excel SA with an automatic gearbox was introduced. Further facelifts in 1989 saw Citroën CX-derived mirrors, as also featured on the Esprit, and 15 inch OZ alloy wheels to a similar pattern as the Esprit’s. The body was made from vacuum injected resin and was made in upper and lower halves which were joined together, evident from a piece of black trim around the car. The body was mounted onto a galvanised steel backbone chassis. This manufacturing process gave the car a good level of structural rigidity. The suspension system consisted of a single transverse lower arm coupled with an anti-roll bar and a wishbone above the lower arm at the front while at the rear the wishbone was mounted below the transverse links. Coil springs and dampers were used throughout.