| 摘要 |
PURPOSE:To improve the durability by providing a bore block fitting section at the inside of the outer wall at the lower section of water jacket. CONSTITUTION:A cylinder head block 5 hanged with outer wall 4 for forming the upper section of water jacket is provided at the outside of a bore block fitting hole 3 to be fitted with the upper end of bore block 2. An outer wall 6 contacting with the lower end of said wall 4 to form the lower section of water jacket is provided while a bore block fitting hole 7 to be fitted with the lower end of the bore block 2 is made at the inside of the outer wall 6. Consequently, the durability after assembling is improved. |
