Hey all,
Recently while working on re routing my BOV, i noticed that there is a decent amount of oil in the intake plumbing and the intercooler. I was wondering if this could be related to the PCV valve pulling oil under increased (higher than stock) boost levels? The 3S-GTE (Toyota) does this whenever you turn up the boost, but my 3S blew oil because of excessive blowby past the #4 cylinder's rings (which had a compression of 65 psi when it should have been ~170 psi). Anyone ever heard of the Subaru's PCV valves letting oil get into the intake tract. A common solution for this is to install a PCV catch can in the line to trap all the oil before it gets into the intake. Please someone help me here, i want to diagnose the problem before it becomes serious, if it is even a problem at all.
Oil in intercooler, PCV Valve?
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Oil in intercooler, PCV Valve?
Ben
91 Celica All-Trac @ 0 psi (turbo being installed)
92 Celica Turbo FWD (swap) @ 12 psi HOLY CRAP!!! I miss AWD
91 Celica All-Trac @ 0 psi (turbo being installed)
92 Celica Turbo FWD (swap) @ 12 psi HOLY CRAP!!! I miss AWD
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most boxer motors including subarus are known to do that especially under high boost/load.... having said that i'd make sure not to overfill when doing oil changes and install a catch can as you said to keep up intercooler efficiency
on a side, I haven't encountered this problem yet, does any one else have this issue?
on a side, I haven't encountered this problem yet, does any one else have this issue?
Nuwan
1992 Open Class Legacy Turbo
2004 Forester XT
2000 Impreza 2.5RSC (Supercharged)
1990 Rover Mini 1000
1992 Open Class Legacy Turbo
2004 Forester XT
2000 Impreza 2.5RSC (Supercharged)
1990 Rover Mini 1000
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How do you make an oil catch can/where can you buy one?
When I pulled the pre-turbo resonator, there was a good bit of oil inside it.
When I pulled the pre-turbo resonator, there was a good bit of oil inside it.
2009 Outback 2.5XT. 5MT. Satin White Pearl.
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
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Well, there are a few ways. From the Celica/MR-2 crowd, you can use some type of can that goes inline with the PCV line that catches the oil. This is done by putting the inlet and outlet of the can on the top of this container. You can either route the PCV back to where it would normally go, or simply attach a breather to the top instead of the outlet hose then block off the outlet bung where it reconnects to the intake plumbing. The second way is more effective, but some say that it can cause driveability problems. From the DSM crowd, they have been known to use $2 disposable fuel filters inline with the PCV tubing to filter out the oil before it gets back into the intake. When the filter catches enough, simply replace it. I am going to use the fuel filter for the Celica since it doesn't seem to blow as much when the boost is turned up, but for the Subaru i am going to make one out of something the size of a Coke can. Greddy makes a universal aluminum one for about $90 IIRC, but to me thats really not worth it.
Ben
91 Celica All-Trac @ 0 psi (turbo being installed)
92 Celica Turbo FWD (swap) @ 12 psi HOLY CRAP!!! I miss AWD
91 Celica All-Trac @ 0 psi (turbo being installed)
92 Celica Turbo FWD (swap) @ 12 psi HOLY CRAP!!! I miss AWD
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So just a line from the PCV valve, to an empty container with a sealed lid and then either attach a breather, or plumb it back to the intake?
Interesting. Let me know what you do on the Subaru, I'm very interested.
Interesting. Let me know what you do on the Subaru, I'm very interested.
2009 Outback 2.5XT. 5MT. Satin White Pearl.
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
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I will defeinately post about it although with finals a week and a half away i have bigger fish to fry right now. Expect it mid May unless i miraculously get my Celica's engine back from the shop by the time i get out of school.
Ben
91 Celica All-Trac @ 0 psi (turbo being installed)
92 Celica Turbo FWD (swap) @ 12 psi HOLY CRAP!!! I miss AWD
91 Celica All-Trac @ 0 psi (turbo being installed)
92 Celica Turbo FWD (swap) @ 12 psi HOLY CRAP!!! I miss AWD