Honda 12100-P30-010 Cylinder Head Assembly

Several new and rebuilt cylinder heads are easily accessible for most engines from the dealer parts division, and auto-part shops. Because some disassembly and inspection tools might be required, as well as replacement parts may not be readily accessible, the home mechanic might find it more convenient and cost-effective to buy replacements for heads and so on, instead of taking apart and inspecting, not to mention reconditioning, the originals. To perform cylinder head disassembly, it is necessary to remove intake and exhaust valves and other related parts; as for the rocker arm assemblies and the camshaft, they should be removed, too. One has to ensure that the part is well labeled or has to ensure that the part is kept separately for rebinding at its rightful place. When you plan on removing the valves, it is worthy to label and store the valves and their bits in a more systematic manner. Sometimes it may be required to compress the springs on the first valve using a spring compressor, to remove the keepers by using a magnet or small needle-nose pliers and then by slowly releasing the compressor to finally remove the retainer, spring and the spring seat if any. Turn the valve out of the head and unscrew the oil seal from the guide; if it sticks, screw the valve back in and file the bearing surface and the keeper groove around the stem. This action must be done to the rest of the valves, keeping all the parts of each valve in a unified lot to facilitate rejoining later. As for the VTEC engines, be sure to sure to disconnect the Oil Control Orifice and O-ring s from the cylinder head. Pull all the valves and other associated parts from the head and neutrally clean it before all cleaning and inspection processes if a complete engine rebuild is being performed on the block before beginning the valve shims and lapping processes.