Forget throttle tip-in, driveability, and vacuum at idle. Set the thing on Kill Mode via thimble-sized fuel jets, disregard the power valve, and let the carburetor dump as much fuel as possible down ...

We did end up jetting the carburetor's main jets up a few sizes also, but this is pretty normal for the pump gas available to us where we were testing. As we went to full throttle, the A/F reading ...

When it comes to engines and our fiendish desire to make them more powerful, it's often easy to fall into a few traps. This is because there are a lot of wives' tales, myths, and misnomers out there ...

Testing carburetors on an engine dyno can sometimes be misleading. We've all seen tests showing large-cfm carburetors making more power—even on a small engine that nobody in their right mind would run ...