The Brutus BMW V12 is just amazing to hear start. So is the sight of the open valve train.

https://www.youtube.com/watch?v=9i6sPBxN1fM


Same goes with this Russian Radial


https://www.youtube.com/watch?v=RW-G7pF6gUQ&vl=en


Am I the only one fascinated by their sound?


Any reason in particular they sound this way?

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1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.