whats the difference between a throttle body and a carb.?

Question

whats the difference between a throttle body and a carb.?

Answer 1

Throttle body is usually referring to fuel injection. Although carbs have a throttle, it is not a separate piece.

Answer 2

There are some differences but in all they are very similar. Both serve as a means to get a precise mixture of fuel and air into your engine. Carburetors typically function on much lower fuel pressure and rely heavily on some pretty dated technology. Throttle bodies have one or two injectors located directly above the throat and inject a nice mist of fuel into the engine. If you take off the air cleaner you can likely see this in action as well as hear the air being sucked in by the engines vacuum. Some carburetors can be manually adjusted using different jets to account for various performance upgrades as well driving styles. Throttle bodies use some computer input (not nearly that of MPI) but are very precise in their own regard and offer little or no manual adjustment capability.



I actually like TBI as it is much simpler than today's MPI setups. Less to go wrong and they still have a pretty decent level of reliability. Not near the efficiency of MPI but still good in my OPINION.....

Answer 3

A carb works by the vacumm of moving air through a restricted area(venturi) sucking fuel through regulated jet to mix fruel into the intake. A throttle body is a computer regulated sprayer pump doing the same job.

Carb is not electronic and will work even with no battery. (old lawnmowers etc).

Throttle Body is computer controlled electrical. You can not push start an EFI vehicle

Answer 4

They both get air fuel to the engine, but the throttle body is a form of fuel injection.