Cylinder head

Jaguar: XJ12 from engine no. 7P45001 to 7P47586 (September 1981 to March 1983) • XJS 5.3 V12 from engine no. 8S18001 to 8S24174 (February 1981 to March 1983)

LH - exchange. Full recondition fitting of all new valves, springs and guides, new cam bearings. Shimming up of camshafts and fitting hardened exhaust seat inserts for lead free applications

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.

You have decided to purchase a reconditioned item from us.
Please note: This item is only available on a COU (Customer’s Own Unit) basis. Therefore, we will require your own unit to be sent to us free of charge for reconditioning.