what is a crate engine

A crate engine is a fully assembled automobile engine that is sold as a standalone product and delivered in a crate. It is typically shipped in a wood or heavy-duty plastic crate. Crate engines are built by specialist engine builders in clean and well-equipped workshops, rather than general-purpose repair garages. They are available at all levels and specifications, but typically fall into one of three categories: short block, long block, and turn-key. A short block crate engine includes the rotating assembly installed into the block, while a long block crate engine includes more than what is typically installed on a long block. A turn-key crate engine is a dress engine with additional parts that make it nearly ready to "turn the key" and start after installation. Crate engines are used for various applications, including general replacement, hot rod builds, and motorsports competition. They are often seen as an economical and more reliable solution compared to engine overhauls or custom builds. Crate engines can be purchased with or without cylinder heads. The highest level of crate engines is called a "turn-key" engine, which includes additional parts that make it nearly ready to start after installation. Crate engines usually include a warranty that expires when either a specified amount of time or mileage is reached (whichever comes first) .