Aluminum has become extremely popular for use in engines, due to its low weight. Observe the following precautions when handling aluminum parts.
Stripped threads in any component can be repaired using any of several commercial repair kits Heli–Coil® , Microdot® , Keenserts® , etc.).
When assembling the engine, any parts that will be in friction contact must be prelubed to provide lubrication at initial start up. Any product specifically formulated for this purpose can be used, but engine oil is not recommended as a prelube.
When semi-permanent (locked, but removable) installation of bolts or nuts is desired, threads should be cleaned or coated with Loctite® or other similar, commercial non-hardening sealant.