What is the best method for cleaning a cylinder block for final assembly?

Cleaning a cylinder block before final assembly is crucial to ensure proper engine function and longevity. The best method involves using hot, soapy water along with a bristle brush. This combination effectively removes grease, dirt, and other contaminants that may interfere with the engine’s performance. Hot, soapy water breaks down oils and grimes, while the bristle brush provides the necessary abrasion to scrub away stubborn deposits without damaging the cylinder block's surfaces.

Using automotive solvent can be effective as well, but it may not be as thorough in removing all dirt and residue compared to soapy water, particularly in areas with accumulated grime. Carburetor cleaner and kerosene are also not optimal as they might leave behind residues or are not as effective for overall cleaning compared to the soap and hot water method. Thus, utilizing hot, soapy water and a bristle brush offers a balanced approach that is both comprehensive and safe for the cylinder block’s material.