Siamesed cylinders

Blown head gasket at the hottest location between two siamesed cylinders

Gasket with a cooling channel between the two bores

Siamesed cylinders are engine cylinders arranged in such a way that they have no channels between them to allow water or other coolant to circulate.^[1]^[2]

Cylinders are generally arranged in this manner when the engine block is of limited size or when stability of the cylinder bores is of concern, such as in racing engines.^[3] The advantage is that the engine block will be reduced in size, or the bore can be increased in size). The disadvantage is a higher temperature between two cylinders, requiring a stronger engine block to avoid distortion of the metal, and better gasket sealing between the two bores.^[1]

References[]

^ ^a ^b Wright, Gus (2021). Fundamentals of Medium/Heavy Duty Diesel Engines. Jones & Bartlett Learning. ISBN 978-1-284-15091-9.
^ Principles of automotive vehicles. Department of the Army. 1985.
^ Baechtel, J. (2012). Competition Engine Building: Advanced Engine Design and Assembly Techniques. CarTech, Incorporated. p. 31. ISBN 9781934709627. Retrieved 2014-10-05.

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[:0-1] Wright, Gus (2021). Fundamentals of Medium/Heavy Duty Diesel Engines. Jones & Bartlett Learning. ISBN 978-1-284-15091-9.

[2] Principles of automotive vehicles. Department of the Army. 1985.

[google-3] Baechtel, J. (2012). Competition Engine Building: Advanced Engine Design and Assembly Techniques. CarTech, Incorporated. p. 31. ISBN 9781934709627. Retrieved 2014-10-05.

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