Quebster
Autocross Newbie
- Location
- Dallas, Tx
Hey all, if it's not one thing, it's another, amirite!?
Anyone running a vented PCV setup with success? How'd ya do it? Currently I have a Spulen V2 PCV plate, with a VWR catch can. Could I do something like tap the top of the can and attach a breather filter? Then of course, block off the catch can outlet and block off the PCV port to the turbo inlet.
Backstory:
Built the motor about 2 years ago, had a VWR PCV system, all was well until BOSS600 v1 wastegate shit the bed running 35lbs of boost. I had this setup most of the year. Sold that, picked up EFR7163, ported the head, shortly after that the VWR PCV stopped venting crankcase pressure properly. Just seems to have busted. Of course no response from VWR. Several other people I know have had the same issue.
So, I put OEM PCV back on and all is well again, at ~34lbs of boost with EFR, other than the known oil-surge issue at the track, where extremely hard braking/cornering causes oil to get picked up by the PCV and routed through combustion (big plumes of smoke).
After WG issues with EFR all year I swap to DBV2 V2 TBB turbski and we tune it on the streets like normal for a couple weeks, get a pump file going, then E85. All on OEM PCV, all is well, zero issues.
Then comes dyno tune day and track weekend. The night before I swap the Spulen V2 PCV plate onto the motor and route it to my VWR can since I already have it. I swapped plates because I'm going to the track and know the Spulen V2 plate fixes the oil surge issue.
Well, after two pulls on the dyno, lo and behold, my VWR catch can is full of 600+ cc of oil. We drain it, finish dyno tuning and make 524whp on a true heartbreaker mustang dyno, so pretty good. Go straight to the track after for a two-day track event, and find out that the can is getting full after just a couple of laps, meaning the rest of the laps the turbo is just drinking oil. Really bad.
By the way, dyno was at a mere 32lbs of boost thanks to the ported head, and at the track I had it turned down to 26-28lbs of boost. So boost wasn't excessive at all.
So I say "Hey USP your Spulen V2 which I've been recommending to everyone just force fed my turbo liters of oil and destroyed it." To which they say, "no way the PCV plate could do that, most likely you have excessive blowby."
Which brings us to now... I do tend to believe that there really is no way their plate itself could cause what happened, there is no diaphram that can bust, it is all aluminum. But if not the plate, then what? If I have excessive blowby, shouldn't I have other problems? I mean guys we're talking enough blowby to send 600+ CC of oil out of the PCV within a couple of stationary pulls. That would have to be an asinine amount of blowby, right? How tf am I making 524whp on a heartbreaker with that much blowby?
And if I have that much blowby, then shouldn't I have symptoms with the OEM PCV on as well? (I don't)
Is it possible that somehow there is somehow too much vacuum in the line from the can to the turbo inlet, to where it is literally sucking oil out of the head? Just trying to figure out wtf to do while Daniel repairs my turbo. Was thinking of trying a vented system.
Bleh. Sorry for the spiel. Compression and leakdown tests were all good last time I did them a couple of months ago for the record. Obviously will be doing them again once I get the car back together. Really any time I have suspected the issue to be something with the built motor it has been anything but.
Anyone running a vented PCV setup with success? How'd ya do it? Currently I have a Spulen V2 PCV plate, with a VWR catch can. Could I do something like tap the top of the can and attach a breather filter? Then of course, block off the catch can outlet and block off the PCV port to the turbo inlet.
Backstory:
Built the motor about 2 years ago, had a VWR PCV system, all was well until BOSS600 v1 wastegate shit the bed running 35lbs of boost. I had this setup most of the year. Sold that, picked up EFR7163, ported the head, shortly after that the VWR PCV stopped venting crankcase pressure properly. Just seems to have busted. Of course no response from VWR. Several other people I know have had the same issue.
So, I put OEM PCV back on and all is well again, at ~34lbs of boost with EFR, other than the known oil-surge issue at the track, where extremely hard braking/cornering causes oil to get picked up by the PCV and routed through combustion (big plumes of smoke).
After WG issues with EFR all year I swap to DBV2 V2 TBB turbski and we tune it on the streets like normal for a couple weeks, get a pump file going, then E85. All on OEM PCV, all is well, zero issues.
Then comes dyno tune day and track weekend. The night before I swap the Spulen V2 PCV plate onto the motor and route it to my VWR can since I already have it. I swapped plates because I'm going to the track and know the Spulen V2 plate fixes the oil surge issue.
Well, after two pulls on the dyno, lo and behold, my VWR catch can is full of 600+ cc of oil. We drain it, finish dyno tuning and make 524whp on a true heartbreaker mustang dyno, so pretty good. Go straight to the track after for a two-day track event, and find out that the can is getting full after just a couple of laps, meaning the rest of the laps the turbo is just drinking oil. Really bad.
By the way, dyno was at a mere 32lbs of boost thanks to the ported head, and at the track I had it turned down to 26-28lbs of boost. So boost wasn't excessive at all.
So I say "Hey USP your Spulen V2 which I've been recommending to everyone just force fed my turbo liters of oil and destroyed it." To which they say, "no way the PCV plate could do that, most likely you have excessive blowby."
Which brings us to now... I do tend to believe that there really is no way their plate itself could cause what happened, there is no diaphram that can bust, it is all aluminum. But if not the plate, then what? If I have excessive blowby, shouldn't I have other problems? I mean guys we're talking enough blowby to send 600+ CC of oil out of the PCV within a couple of stationary pulls. That would have to be an asinine amount of blowby, right? How tf am I making 524whp on a heartbreaker with that much blowby?
And if I have that much blowby, then shouldn't I have symptoms with the OEM PCV on as well? (I don't)
Is it possible that somehow there is somehow too much vacuum in the line from the can to the turbo inlet, to where it is literally sucking oil out of the head? Just trying to figure out wtf to do while Daniel repairs my turbo. Was thinking of trying a vented system.
Bleh. Sorry for the spiel. Compression and leakdown tests were all good last time I did them a couple of months ago for the record. Obviously will be doing them again once I get the car back together. Really any time I have suspected the issue to be something with the built motor it has been anything but.
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