Buick straight-6 engine

Buick Straight-6
Overview
Manufacturer	Buick
Production	1914-1930
Layout
Configuration	Naturally aspirated Straight-6
Displacement	191–331 cu in (3.1–5.4 L)
Valvetrain	OHV
Combustion
Fuel system	Carburetor
Fuel type	Gasoline
Cooling system	Water-cooled
Chronology
Successor	Buick Straight-8 engine

The Buick Straight 6 was an engine manufactured by Buick from 1914–1930 and was exclusively used in the Buick Six platform. They were OHV, like their previous engines, as Buick had been almost exclusively using overhead valve engines since the Model B in 1904. The engine also had the starter and generator in a single unit. The engine did not have a removable cylinder head, meaning the cylinders and valves came off as a unit, (although with the valves in cages, the cages were removable individually), and pistons had to come out of the bottom of the unit as it was removed. They had a displacement ranging from 191 to 331 cu in (3.1 to 5.4 L) depending on year and model. In 1922 the series was divided into the lower priced Standard Six and the high-end Buick Master Six series. The Buick Straight-8 engine replaced the straight 6 across the board in all models, in 1931.

References

• Slauson, H. W.; Howard Greene (1926). "Leading American Motor Cars”. Everyman’s Guide to Motor Efficiency. New York: Leslie-Judge Company.
• Kimes Beverly, Henry Clark, Standard Catalog of American Cars 1805–1942, Iola, Krause Publications Inc, 1996, ISBN 978-08-73414-28-9