V-type engine for vehicle

A V-type engine for vehicle comprising:

• a front cylinder unit disposed in a forward slanting position, said front cylinder unit including a front cylinder, a front cylinder head for said front cylinder, and a front cam shaft arranged on said front cylinder head;
• a rear cylinder unit disposed in a backward slanting position, said rear cylinder unit including a rear cylinder, a rear cylinder head for said rear cylinder, and a rear cam shaft arranged on said rear cylinder head;
• a crank case with which a mission chamber is integrally formed at a back part of said crank case;
• a crank shaft rotatably supported in said crank case;
• a cam driving intermediate shaft arranged above said crank shaft;
• a power transmitting mechanism interconnecting said cam driving intermediate shaft and said crank shaft;
• cam driving chain mechanisms respectively interconnecting said cam driving intermediate shaft and each of said front and rear cam shafts;
• a change gear input shaft to which a power from said crank shaft is input;
• a change gear output shaft from which a power is output to an axle of said vehicle, said change gear output shaft being arranged in a back part in said mission chamber;
• and
• a tensioner for said cam driving chain mechanism for said rear cam shaft;
• wherein said change gear input shaft and said tensioner are positioned within a range between a line connecting a shaft axis of said change gear output shaft and a shaft axis of said crank shaft and said rear cylinder unit.