Notes

Yes, it is possible to convert a Continental TSIO-520-ECB engine to a TSIO-520-NB, but it is not a simple task and requires a significant amount of work. The conversion involves replacing several components and making various modifications to the engine.

Here are the steps one would need to take to convert a TSIO-520-ECB engine to a TSIO-520-NB:

Obtain the necessary conversion kit: The first step is to obtain a conversion kit that contains all the components required to convert the engine. These kits are available from authorized Continental Motors distributors.
Remove the old components: The next step is to remove the old components from the engine. This includes removing the old cylinders, pistons, crankshaft, camshaft, and other parts.
Install the new components: Once the old components are removed, the new components included in the conversion kit can be installed. This includes installing the new cylinders, pistons, crankshaft, camshaft, and other parts.
Make necessary modifications: There are several modifications that need to be made to the engine to accommodate the new components. For example, the engine case may need to be modified to accommodate the new crankshaft, and the accessory case may need to be modified to accommodate the new camshaft.
Perform necessary inspections: After the engine is reassembled, it is important to perform a series of inspections to ensure that everything is properly installed and functioning correctly. These inspections may include compression tests, leak tests, and other tests.
Obtain necessary approvals: Once the engine is converted and inspected, it is important to obtain the necessary approvals from the appropriate regulatory agencies. This may include obtaining an FAA Form 337, which documents the modifications made to the engine.
Overall, the conversion process is complex and should only be attempted by experienced mechanics who are familiar with the TSIO-520 engine and have the necessary tools and equipment. It is also important to follow the instructions provided in the conversion kit carefully and to ensure that all necessary inspections and approvals are obtained before returning the engine to service.