<Tr> <Td> </Td> <Td> This article's lead section may be too long for the length of the article . Please help by moving some material from it into the body of the article . Please read the layout guide and lead section guidelines to ensure the section will still be inclusive of all essential details . Please discuss this issue on the article's talk page . (February 2014) </Td> </Tr> <P> An engine swap is the process of removing a car's original engine and replacing it with another . </P> <P> This is done either because of failure, or to install a different engine, usually one that is more modern, this may make it more powerful and or efficient . Older engines may also have a shortage of spare parts and so a modern replacement may be more easily and cheaply maintained . Swapping to a diesel engine for improved fuel economy is a long established practice, with modern high efficiency and torque diesel engines this does not necessarily mean a reduction in performance associated with older diesel engine swaps . For the particular application of off - road vehicles the high torque at low speed of turbo diesels combined with good fuel economy makes these conversions particularly effective . Older non-electronic fuel injection diesels were well known for their reliability especially in wet conditions . </P> <P> An engine swap can either be to another engine intended to work in the car by the manufacturer, or one totally different . The former is much simpler than the latter . Fitting an engine into a car that was never intended to accept it may require much work and money; modifying the car to fit the engine, modifying the engine to fit the car, and building custom engine mounts and transmission bellhousing adaptors to interface them along with a custom built driveshaft . Some small businesses build conversion kits for engine swaps, such as the Fiat Twin cam into a Morris Minor or similar . </P>

Can you put different engines in a car