Engineering:Siamesed cylinders

From HandWiki
Short description: Type of engine 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]

Examples

Examples of engines with siamesed cylinders:

  • Chevrolet Stovebolt engine
  • Chevrolet small-block engine (first- and second-generation)#4.125 in bore family (1970–1980)
  • Oldsmobile 403 small-block V8 (1977-1979)
  • Ford Godzilla engine
  • Ford Racing versions of the Ford (Windsor) small block engine
  • Honda B engine
  • Mazda E engine
  • Honda K engine
  • Toyota A engine (including both performance engines like the 4age and small economy engines like the 3A and 4A)

References