Boss 302s Pcv Routing

I noticed something interesting about the PCV routing on the 2013 and 2014 Boss 302S motors.

PCVs on driver's and passenger's side are both routed to a catch can. The input from the passenger's side PCV to the intake manifold is blocked off at the intake manifold. You can see in the picture attached.

Anyone know a specific reason for this? I am kind of interested in know why Ford did this on these motors.
Did they do this on the normal Boss and GT motors for 2013 and 2014? My 2011 GT certainly didn't come with a catch can.

I did some reading on this. Looks like my analysis above is correct. As a matter of fact, both intake manifold inputs from the PCVs are blocked off. You can find this whole kit through JDM or Watson Racing. Depends on your application if you need the normal can (just inputs) or the can with an output.

Besides effectively removing vapor and other junk from the combustion process, this also removes that burnt oil smell from the cabin that you have probably noticed at high RPMs. Lots of people seem to swear by this setup- apparently keeps the oil pretty clean.

I have a JLT catch can on the passenger-side PCV of my car. And I thought the same thing as Coosaw- putting two outputs together without another output didn't seem logical.

There are two types of catch cans offered by Peterson :

1. External breather type
http://shop.watsonracing.com/CATCH-CAN-BREATHER-KIT-5-0-MUSTANG-2005-16-p/wr-pcvcankit.htm

2. Non-external breather type
http://www.teamjdm.com/2011-2014-mustang-5-0l-catch-can-breather-kit-by-watson-racing/
Description says it was standard on the Boss 302S and Cobra Jet drag cars

Forced-induction cars are more likely to use this third line/output external-breather type due to increased pressure put into the catch can. With it being for offroad use, the only laws those cars have to abide by would be those of the association they are racing under.I imagine some would find potential for spraying oil on the road to be risky, but for racing, it would be pretty minimal, especially if your breather is filtered.

I read up on this and nobody seems to have had any issues with the non-external breather type. If they have, I haven't read it. Only concern seemed to be pressurizing the catch can , but that doesn't seem to be an issue. Might ask some of the 302S guys and ask their thoughts. The oil smell comes from having the PCV linked to your air intake. Removing PCV from the equation should remove the smell and it seems to work for people.

It all comes down to the thing that killed the muscle cars of yesterday- emissions. If engineers had it their way, they would vent the PCV right into the air. But it's not ethical. So instead, they route it to the intake manifold in hopes that the vapor is burned off in the combustion process. Sacrifice your motor for your lungs.

CoosawJack said:

Where does the "vent" terminate?? On a vacuum source??

Click to expand...

It looks to be venting out the top of the lid? Not sure. I am curious myself, so I might buy the kit just to know.

What are the real, proven benefits for street vehicles as you are citing?