The "heart" of the Jag is a case for the expert! The Sauer & Sohn engine specialists increase the boreholes for the pistons and ensure the necessary cross-grinding. This ensures that the oil adheres well and the piston rings are optimally lubricated in the future. Whatever they do and why the mass of the crankshaft is sometimes not the same, you will find out in the third part of our series reportage. We wish you a lot of fun!