Cylinder Head Assy, complete, standard, aluminium

Standard loaded aluminium head complete and assembled. Fully machined and assembled, ready to fit. This spec cylinder head is standard size with lead-free compatible valves. 

Note: Hold down torque is 70-75ft/lbs.

These brand new cylinder heads are designed, as closely as possible, to resemble the original, late, TR4/4A units with the exception of a few upgrades, notably, the webs between the spark plugs have been improved and the flange thickness has been increased to give added strength especially if it is skimmed for a higher compression ratio.
The inlet valve shroud (the overhang directly below the inlet valve) has been removed, which is what you have to do when skimming a TR4A head, this may look a little unusual when fitting a head gasket against it but it works absolutely fine. 
All fully machined cylinder heads are supplied with lead-free compatible valves & valve seats as appropriate, all core plugs and push rod tubes are fitted. If higher compression ratios are required, up to 0.150” may be safely removed from the head face. Note: We recommend you use all new hardware, and use uprated components for uprated engines.