Carburetor jets control the amount of fuel which is mixed with air inside the throttle body of your carburetor. This carburetor jet size chart shows you how effective each jet is at specific throttle ...

First, up-jet and make sure the motor loses power just to be safe, then startreducing jet sizes. As a rule of thumb, go up one jet size, and if you lose power, down-jet by two jet sizes." ...

So if you’re gonna fiddle with the jets, go up one size first—once you know it’s running rich and losing power, then you can drop down two jet sizes. How To Size and Buy A Carb ...

Carburetor jets are nozzles that spray fuel into a chamber, where it mixes with air and is sent to the cylinders of your engine through the intake valves. Carburetor jets are sized by number.

On the bottom for the carburetor you typically have two jets. The pilot, ... Within the needle jet the needle moves up and down to vary the orifice size to meter the fuel.

Our final jet combination with the downleg carb made slightly less peak power at 506 at 6,600 and 436 lb-ft at 5,600 rpm. But when we really studied all the numbers, they revealed some interesting ...

Simply put, a Chevy equipped with a 4150-series carb is miles ahead of one with a 4160. In the 4160 carburetor, changing jet size mandates replacement of the thin metering plate, as there are no ...

Carburetor jets are nozzles that spray fuel into a chamber, ... If you still can't get the right fuel/air mixture, check your owner's manual for the stock jet size before shopping for new jets.