Throttle bods

[Loz]

The axiom 'less is more' doesn't always seem to apply to engines especially when it comes to throttle bodies so, why is four throttle bodies better than one & why do they seem to be standard kit on motor bikes but not on cars?

 

[turbonutter69]

The axiom 'less is more' doesn't always seem to apply to engines especially when it comes to throttle bodies so, why is four throttle bodies better than one & why do they seem to be standard kit on motor bikes but not on cars?

Itb's or "individual throttle bodies" Feed fuel direct into each cylinder there for more fuel can be fed into the engine there for more bhp......

 

[stamford]

Simple, sharing goes on, some carbs are a compromise, TBs are direct and in line, no compromise if done right. Bikes have them to deliver the power smoothly and direct due to the handling characteristics. Carbs can be starved too easily on a bike as they spend so much time on their side. Carbs are bulky on a bike and not always easy to get them installed at the optimum angle.

 

[Sid447]

The axiom 'less is more' doesn't always seem to apply to engines especially when it comes to throttle bodies so, why is four throttle bodies better than one & why do they seem to be standard kit on motor bikes but not on cars?

Individual TB's allow better throttle response,

primarily. It's also easier to make better specific power.
Some cars use them but these requirements mentioned, plus the added cost and complexity are not considered worth it for most production cars.

Carbs can be starved too easily on a bike as they spend so much time on their side.

Carbs work just fine on any bike, they don't suffer starvation from being laid-over as weight acts vertically downward. They still function as advertised at any angle of lean. Fuel Injection on a bike has the advantage in better torque spread due to more even and better controlled fuel delivery. There is generally no peak power difference.