Nimbus Model C motorcycle, Four banger with two main bearings.
four banger single 81, Thomas head
"If it doesn't make it go faster, you don't need it." That's how Joe Leroux describes the thinking behind the buildup of his 1930 Ford Model A.
Old-Time Four-Banger: 1930 Ford Model A is Hot Rodding in its Purest Form
hopped up model A four