PCV

I never really put much thought into what a PCV actually does.  I just replaced the stupid valves ever so often to make sure they did whatever they're supposed to do LOL.

Turns out these little valve have a pretty important roll.  Over time fuel can seep past the cylinders into the motor oil and create a "gas" build up in the middle of the block, as well as while mixing with the engine oil create something known as 'sludge' which NO ONE WANTS because this add's a lot more wear and tear on motors also.

The PCV connects to a vacuum source and essentially evacuates this gas from the engine block as it circulates through vent holes in the engine block back up the the cylinder head and valve cover area.  This gas is brought into the intake manifold and sent back into the cylinders to be hopefully burnt and shot out the exhaust.

So...I made sure to reconnect the PCV when I swapped out the OEM carb for the Weber 38.  LCE provides a plate with a 3/8" vacuum hose nipple that attaches onto the intake manifold so that you can route these gasses from the PCV back into the intake as it should be.

Some folks completely remove the PCV.  This is probably a mistake for those who are just daily driver or weekend warrior drivers.  The guys who can get away with doing this would be those who are changing their oil ever race run or after each event because this probably isn't enough time to have sludge build up, and they're probably going to tare the motor down between runs or events anyway.  Other than that...be sure you have an operational PCV!  It'll save you a lot of headaches in the future!