Most used cylinder heads can be retrieved new or rebuilt for most types of engines from the dealerships and other auto parts stores, thus, home mechanics could source new heads as these are cheaper and efficient to replace the old ones that would need time for disassembling, inspection and reconditioning. Texas Thrash describes disassembly as the process of evacuating the intake and exhaust valves to other related components; this assumption is based on the presumption of previous removal of the lifters, rocker arms, and camshafts. However, it is advised that before removing the valves, they should be labeled and stored together with their component so as to be fitted into the same valve guides. In order to capture the first valve the valve spring have to be compressed and therefore for this purpose spring compressor are used and then removing the keepers and relieving the compressor will help in removing the retainer, spring, and the spring seat should liberate from the lifter bores cautiously enough not to harm the lifter bores. Once when the puller had been removed on the valve, it was necessary to release the guide of the oil seal and also valve binding may necessitate deburring of the keeper groove area. This should be carried out for the other valves and all the parts that are removed from the valves should be well arranged for re-use. Subsequent to removing all parts and stowing them, the head should be washed and evaluated; additionally, in cases where an engine rebuild is undergoing if a full-scale overhaul is to be executed, all the disassembling should have commenced as soon as the head cleaning and inspection program begins.