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Forced Induction Turbo, Supercharger, Methanol, Nitrous |
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03-23-2016, 11:10 PM | #1 |
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PCV Valve Replacement with STI Valve
I just installed the SPD kit on my car and I picked up a STI PCV Valve since a lot of people were recommending replacing it since the stock one is plastic. However where I would assume the PCV Valve is installed is right behind the intake manifold where the passenger side hose is going to from the intake manifold, right? Mine is metal (maybe the inside piece is plastic?)
So my question is am I looking at the right thing to replace? If so did you just use a socket with an angler to replace it, because it is kind of a pain where it sits right now? I'm sorry if this isn't in the right section. I figured it would be with forced induction. I've tried to google it but all I come up with is replacing the small plastic elbow, but that was hollow and replace with a straight metal tube during installation. |
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03-23-2016, 11:13 PM | #2 |
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Delete it and install a catchcan.
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03-23-2016, 11:14 PM | #3 |
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03-24-2016, 08:31 PM | #4 |
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I know how you feel but catch can and oilcooler is a must. The engine will take a beating even if it's a 7psi basemap tune with DD car.
I had oil leaks from anywhere the damn pressure could get out during WOT. Pcv delete, catchcan fixed it real fast.
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03-24-2016, 08:36 PM | #5 |
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The JRSC instruction manual has instructions for installing it. That would be a good place to start. It has specific placement. I would go into why placement is important but I don't feel like looking through the KWSC thread for where it's mentioned. Hope that helps.
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03-24-2016, 11:01 PM | #6 | |
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Quote:
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03-24-2016, 11:03 PM | #7 |
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Ya, I'll probably order the dual radiums next week and just install the valve in the middle of the line temporarily until they come in
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03-25-2016, 12:04 AM | #8 | |
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Quote:
A 19mm deep socket and a medium extension will get the old one out (it will be tight, but comes out) Screw the new STI one in by hand and then tighten down with the socket/ratchet. |
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03-25-2016, 03:15 AM | #9 |
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Yea idk who said the stock PCV is plastic; it is very much metal. I put in the one from the FA20F WRX.
Any reason they say to use the STI one? Is it better? Didn't even realize those were compatible.
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03-25-2016, 08:53 AM | #10 |
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Shouldn't be much difference. WRX/STI, both were made to see boost, so they both work for the application.
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03-25-2016, 02:48 PM | #11 |
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its definitely metal. i drilled out the check valve in mine so it was wide open for my atmospheric vent catch can.
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03-25-2016, 06:31 PM | #12 | |
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Yep. Blow by creates presure in the case. If the valve is shut over boost then the crankcase can't let the presure out. The front case vent isn't enough. Put a cap plug on your intake plenum and vent to atmosphere. a filter popped on the barb is better than back presure. And BOOM! When I boosted my Busa, I left my crackcase vent wide open. Not worth it not to.
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03-26-2016, 12:36 AM | #13 |
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Ya, I'm not sure were I heard that it was plastic. Thanks for the replies guys.
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03-26-2016, 09:15 PM | #14 |
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I run a VTA can and just replaced the valve with a hose fitting of the correct threads, boom done.
I did it just for simplicity, one less thing to fail.
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