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Cylinder head

exchange. B-type head with new valves, springs and guides, new cam bearings. Shimming up of camshafts and fitting hardened exhaust seat inserts for lead free applications

Jaguar XK150 3.4 with lectrical tachometer from May 1959: OTS from 820043 (RHD) and 832088 (LHD), DHC from 827373 (RHD) and 838272 (LHD), FHC from 824905 (RHD) and 836233 (LHD)

Every cylinder head is inspected for cracks. Valve guides are measured for wear and either resized or renewed to conform to original tolerances. Valve seats are machined so as to retain the correct seat angles, widths, valve heights and valve seating concentric with the centre line of the valve guide bore. Valves are replaced. All valve springs are tested for squareness, free height and compressed load length. Cylinder heads are checked for distortion and thickness. When machining the cylinder head face, particular attention is paid to maintaining the correct surface finish specified by the gasket manufacturer. On all our engines we grant with professional installation 24-month guarantee in accordance with our general terms of trade.