Aluminum has become extremely popular for use in engines, due to its weight savings. Observe the following precautions when handling aluminum parts:
- Never hot tank aluminum parts. The caustic hot tank solution will eat the aluminum.
- Remove all aluminum parts (identification tag, etc.) from engine parts prior to tanking.
- Always coat threads lightly with engine oil or anti-seize compounds before installation, to prevent seizure.
- Never over tighten bolts in the block or spark plugs especially in aluminum heads.
- When assembling the engine, any parts that will be exposed to frictional contact must be pre-lubed 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 pre-lube in most cases.
- When semi-permanent (locked, but removable) installation of bolts or nuts is desired, threads should be cleaned and coated with LoctiteŽ or another similar, commercial non-hardening sealant.
