WW2-era Republic P-47 Thunderbolt turbocharger. The aircraft was basically built around its engine and its turbocharger.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...r_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...percharger.jpg
More:
https://lynceans.org/all-posts/the-c...ts-powerplant/
Previously:
https://www.homemadetools.net/forum/...389#post161907
https://www.homemadetools.net/forum/...399#post122142
https://www.homemadetools.net/forum/...206#post149917
https://www.homemadetools.net/forum/...151#post149687
https://www.homemadetools.net/forum/...250#post138563