Oil Catch Can / Pre-Install Questions

[wiseman]

Hello,
I am getting ready to install a catch can on the PCV side and a RJC PCV. Should the RJC PCV be installed inline between the stock PCV and catch can or inline between the catch can and throttle body?

 

[klmnla]

Mine is just above the PCV before it goes into the catch can.

 

[gtfrede]

You want the check valve in the pcv to operate to keep pressurized air out of the can as well because most arent completely sealed which the system has to stay sealed to atmosphere so you arent pulling unmetered air into the engine or creating a boost leak in the can.

 

[wiseman]

What about the catch can? Shouldnt the check valve protect the catch can from being pressurized also? So the check valve would be between the catch can and throttle body?

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[gtfrede]

You are correct

 

[wiseman]

Ok, so I will install the rjc pcv between the catch can and throttle body.

Now, the check valve didn't come with instructions, which way should it be installed? With the barb towards the catch or towards the throttle body? There is an arrow Indictor in the pic, see below

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[Jay J]

Don't see the picture...

 

[gtfrede]

BLOW IN EACH END AND WHICH EVER SIDE RESTRICTS FLOW GOES TOWARD THE THROTTLE BODY

sorry for caps

 

[wiseman]

Ops sorry, forgot to upload the pic . Here you go:

 

[gtfrede]

Should be barbed end toward throttle body

 

[wiseman]

Should be barbed end toward throttle body

ok, thanks

Another observation, when I blow into the RJC PCV, no air passes thru on neither end. Is this ok?

 

[T- Type Tim]

Takes a little bit of pressure to open it up

have the same one and yes it's ok

 

[wiseman]

Thanks T-Type Tim. I emailed Jason at RJC. He said the valve opens up at about 1/2 lb of vacuum. I will put some compressed air n it to verify when I get home.

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[earlbrown]

Make sure it doesn't take a lot of cracking pressure to get it to flow. If it presents a restriction to the PCV line it can screw with your BLMs

 

[wiseman]

I will definitely check the blm's when I get her up and running soon. Thanks

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[wiseman]

I just wanted to share some pics......I am not sure how everyone else puts this valve inline, but it seems awkward just sliding a tube over the check valve body. I went to the parts store and picked up a barbed fitting to add to the other end, so that I can keep a continuous hose diameter and for added ease of installation.

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[wiseman]

I will add Teflon tape the threaded end of the new fitting later today

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[klmnla]

I ended up using some hose clamps. Has not blown off yet.

 

[TurboBuRick]

That valve is suppose to replace the pcv all together. Not inline.

 

[gtfrede]

Yes I dont think you planned on using two pcv valves but only use the rjc valve and a open barb in the intake