Do you need a PCV system for your Turbo TRUCK?  That depends on the person and the purpose of your truck.   

  This page will show you what is needed to set up a proper PCV system for a boosted truck. From a simple non-catch can option to a catch can option.  

   First PCV stands for Post Crank Ventilation.  This system is design to remove combustion gases and moisture  (dirty air ) from your crankcase. By using your intake manifold to pull a slight vacuum on one of the valve cover, and then fresh air is pulled in from the other side of the engine usually the other valve cover through a hose connected to a PRE-throttle body blade loction.   While NOT at Wide Open Throttle the PCV is allowing fresh air to be drawn through the engine.  AT Wide Open Throttle that dirty air needs to reverse flow to  escape the crankcase through the fresh air side (pre-throttle). The main goal is to keep FRESH air moving through your crank case allowing the dirty air to be pulled through to your intake system and burned during the combustion cycle.  A common set up for this is;  PCV located in the rear driver side valve cover, and fresh air coming in front passenger valve cover.  


 HERE ARE A FEW EXAMPLES ON HOW A TURBO/BOOSTED PCV SYSTEM CAN BE SET UP. 

The descriptions below use an LS engine in a TRUCK, and may work on other V8 applications.

PCV & NON-CATCH CAN SET UP

1) From your front passenger valve cover remove the line that goes to either your throttle body or intake air tube.  If it is connected to the throttle body, you must now plug that port at the throttle body location.  

2) Install a  breather filter into that line you just removed from the throttle body or intake tube.  This is your fresh air inlet for your PCV system.

3) Remove your PCV line from the top/middle of the intake.  Use a small piece of 3/8" oil compatible hose and install that mew hose onto your intake.    Install a one way check valve with the air flow going towards your intake.  Reinstall your stock PCV hose onto the other end of the one way check valve.

You have now set up the a simple PCV system.  This lay out works for turbo boosted engines that are not set up for racing, or have excessive blow by. 


PCV WITH CATCH CAN SETUP

1) From your front passenger valve cover remove the line that goes to either your throttle body or intake air tube.   If it is connected to the throttle body, you must now plug that port at the throttle body location.  
2) Install a breather filter into that line you just removed from your throttle body or intake tube.  This is your fresh air inlet for your PCV system.

3) Remove your PCV line from the top/middle of the intake.  Use a small piece of 3/8" oil compatible hose and install that onto your intake.        4) Install a one way check valve with the air flow going towards your intake. Now route a hose from the other side of the check valve to your Catch Can.

5) From your Catch Can route another hose back to your stock PCV connection at the valve cover. 

  Now while your pcv system is working, your catch can will be catching dirty oily air, prior to getting to your intake tract.  You will from time to time need to drain the catch can. How often?  This will depend on many factors, quality engine, rings gaped a large amount, loose pistons etc.

 


PCV with DUAL CATCH CAN SET UP
1) From your front passenger valve cover remove the line that goes to either your throttle body or intake air tube.   If it is connected to the throttle body, you must now plug that port at the throttle body location.  
2) From the passenger side valve cover route to your fresh air catch can.  This catch can will have an air filter on top of it. This is your fresh air for your PCV system. This catch can will capture the dirty oily air while in boost..
3) Remove your PCV line from the top/middle of the intake.  Use a small piece of 3/8" oil compatible hose and install that onto your intake.       4) Install your one way check valve with the air flow going towards your intake. Now route a hose from the other side of the check valve to your sealed Catch Can.

5) From your sealed Catch Can route another hose back to your PCV connection at the valve cover.   Now while your PCV system is working, your sealed catch can will be catching dirty oily air, prior to getting to your intake tract.  You will from time to time need to drain the catch cans. How often?  This will depend on many factors, quality engine, rings gaped a large amount, loose pistons etc.   The benefit of this type of system is all dirty air is being captured prior to going into the intake track, or to the atmosphere.



NO PCVWITH AND WITH OUT CATCH CAN

Remove all pcv lines from your engine.  Cap top of the intake where your PCV line was, and CAP your throttle body where your front passenger valve cover hose plugged into.  

Install breathers on both valve cover and your done.  

OR

From both valve covers route hoses to a breather type catch can(s) and your done. 

With this option you may smell an oil smell from time to time inside the cab of the truck.  If you do have an oily smell inside; try  mounting your breathers or can(s)  down low in the engine compartment.







Pictures of the Trick Catch Can options.  Sealed or Breather

453 Bowman Wichita Falls TX 76308 

Turbo system PCV Set up  

940-781-5204