PCV Valve Replacement with STI Valve - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

crazyfrenchbiker · 03-28-2016, 02:40 PM

Quote:

Originally Posted by mrk1

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.

We did the same thing with both our race cars.

armstrom · 03-28-2016, 03:11 PM

Most factory turbo cars get around this by having the PCV vent before the compressor inlet so the valve never sees boost, only atmospheric pressure or vacuum. Many people still install catch cans to avoid sucking oil into the turbo and ultimately coating the intercooler with oil. It's possible to install a catch can that does not vent to atmosphere though. That's what I did on my MR2.
-Matt

mrk1 · 03-28-2016, 03:54 PM

The problem is not the material of the valve, plastic, metal, solid gold. The problem is the circuit was never intended to see positive pressure. Its not rocket science but it needs to be rearranged for boost.

Drilled out stock piece, no plastic

Plunger is metal, sticks to a magnet just fine

mrk1 · 03-29-2016, 11:20 AM

If people are paying for a "metal upgrade" what can I sell this High Flow Fully Ported valve for?

Rinzler_ft86 · 06-25-2016, 07:53 PM

Where is this pcv located?

Sent from my SM-N920P using Tapatalk

DHitHim · 09-07-2016, 05:21 PM

Quote:

Originally Posted by The Racers Line

You don't replace the stock one because it is plastic, you replace it because it was never meant to see boost, so it opens up(under even 1psi from my testing) and lets boost into the crank case (bad)

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.

Do I retain the stock one of I have a boomba valve. I'm running with a radium dual catch can set up

Quote:

Originally Posted by Rinzler_ft86

Where is this pcv located?

Sent from my SM-N920P using Tapatalk

The passenger side hose on the intake manifold cover, follow it down and on the block is the factory PCV.

The Racers Line · 09-07-2016, 05:22 PM

Quote:

Originally Posted by DHitHim

Do I retain the stock one of I have a boomba valve. I'm running with a radium dual catch can set up

Yup you are good with the boomba valve.

DHitHim · 09-08-2016, 03:58 PM

Quote:

Originally Posted by The Racers Line

Yup you are good with the boomba valve.

So leave the stock valve in place and run the Boomba inline with it?

Also thanks!

The Racers Line · 09-08-2016, 04:23 PM

Quote:

Originally Posted by DHitHim

So leave the stock valve in place and run the Boomba inline with it?

Also thanks!

Yes

switchlanez · 12-08-2017, 07:04 PM

Quote:

Originally Posted by zkv476

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.

Quote:

Originally Posted by Sportsguy83

Shouldn't be much difference. WRX/STI, both were made to see boost, so they both work for the application.

I bought the STI PCV valve for the EJ PN 11810AA040 and the spout was much smaller than the hose. PN 11910AA141 for the FA in the WRX has a proportionally fatter spout based on pics. Can anyone confirm the part numbers?

switchlanez · 02-05-2019, 09:36 PM

Got a few private messages about this. Confirming part number 11810AA141 fit when I installed it.

86zn6 · 07-28-2020, 03:10 AM

should this the right part#? 11810AA131

https://www.blingstrom.com/diy-proje...0the%20vehicle.

botbs · 04-06-2022, 10:52 PM

Quote:

Originally Posted by switchlanez

Got a few private messages about this. Confirming part number 11810AA141 fit when I installed it.

So we should get the FA - 11810AA141 and not the EJ 11810AA040, am I correct?

Thanks!

KillerBMotorsport · 04-07-2022, 07:30 AM

You guys should just consider just modifying the PCV system so it's the same as on a WRX/STi. VTA is going to create unwanted crankcase pressure vs vacuum. I definitely recommend managing the blow-by with a can or AOS to scrub clean before going back into the engine. Many more benefits to running a closed loop system.

Nice thing about the FA is the internal baffling is pretty good. The venting capacity could be better (and changing some parts can help that), but it spews WAY less than an EJ engine!

03-28-2016, 03:54 PM	#17
mrk1 Senior Member Join Date: Mar 2013 Drives: Sterling BRZ Ltd Location: New England Posts: 1,702 Thanks: 403 Thanked 1,389 Times in 671 Posts Mentioned: 20 Post(s) Tagged: 2 Thread(s)	The problem is not the material of the valve, plastic, metal, solid gold. The problem is the circuit was never intended to see positive pressure. Its not rocket science but it needs to be rearranged for boost. Drilled out stock piece, no plastic Plunger is metal, sticks to a magnet just fine __________________ The Build Thread GT28RS - eBoost2 - 3.91 Final Drive - Supra LSD Last edited by mrk1; 03-29-2016 at 10:05 AM.

03-29-2016, 11:20 AM	#18
mrk1 Senior Member Join Date: Mar 2013 Drives: Sterling BRZ Ltd Location: New England Posts: 1,702 Thanks: 403 Thanked 1,389 Times in 671 Posts Mentioned: 20 Post(s) Tagged: 2 Thread(s)	If people are paying for a "metal upgrade" what can I sell this High Flow Fully Ported valve for? __________________ The Build Thread GT28RS - eBoost2 - 3.91 Final Drive - Supra LSD

02-05-2019, 09:36 PM	#25
switchlanez Glorious BRZ Master Race Join Date: Apr 2011 Drives: Subaru Libird Location: Race Wars Posts: 3,645 Thanks: 1,050 Thanked 2,718 Times in 1,079 Posts Mentioned: 110 Post(s) Tagged: 0 Thread(s)	Got a few private messages about this. Confirming part number 11810AA141 fit when I installed it. __________________ << BUILD THREAD >>

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03-28-2016, 03:11 PM	#16
armstrom Senior Member Join Date: Mar 2016 Drives: none Location: nowhere Posts: 225 Thanks: 39 Thanked 124 Times in 67 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Most factory turbo cars get around this by having the PCV vent before the compressor inlet so the valve never sees boost, only atmospheric pressure or vacuum. Many people still install catch cans to avoid sucking oil into the turbo and ultimately coating the intercooler with oil. It's possible to install a catch can that does not vent to atmosphere though. That's what I did on my MR2. -Matt

06-25-2016, 07:53 PM	#19
Rinzler_ft86 Member Join Date: Jun 2015 Drives: 2013 brz limited edition Location: WA Posts: 98 Thanks: 51 Thanked 8 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	Where is this pcv located? Sent from my SM-N920P using Tapatalk

07-28-2020, 03:10 AM	#26
86zn6 Member Join Date: Mar 2013 Drives: White GTS then Black GTS Location: Australia Posts: 33 Thanks: 17 Thanked 5 Times in 5 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	should this the right part#? 11810AA131 https://www.blingstrom.com/diy-proje...0the%20vehicle.

04-07-2022, 07:30 AM	#28
KillerBMotorsport Join Date: Apr 2021 Drives: BRZ Location: Virginia Posts: 568 Thanks: 89 Thanked 710 Times in 324 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	You guys should just consider just modifying the PCV system so it's the same as on a WRX/STi. VTA is going to create unwanted crankcase pressure vs vacuum. I definitely recommend managing the blow-by with a can or AOS to scrub clean before going back into the engine. Many more benefits to running a closed loop system. Nice thing about the FA is the internal baffling is pretty good. The venting capacity could be better (and changing some parts can help that), but it spews WAY less than an EJ engine!

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