V1 Josh's City Goblin - 10 XFE Donor

[jirwin]

I don't think I really ever mentioned smoke. It only really smoked from oil being shoved thru the engine because of this turbo inlet problem.

Regardless, I tend to agree. ZZP is saying to switch it back to how I had it now though, which makes sense kinda sorta based on what you were saying earlier. If I do my check valve idea, the crankcase won't have a source of fresh air which leaves it in massive vacuum. Apparently this is also bad like having too much pressure. So I think we're going to switch it back to blocking the intake manifold PCV and just running valve cover -> catch can -> turbo inlet and see if that pools any oil. Idk. My brain feels like mush thinking about this anymore.

 

[jirwin]

Now they're saying to (effectively) just block my intake manifold PCV and vent to atmosphere. I'm positive I asked about doing that originally, but whatever. I just want it fixed. That's the route I'm probably going to go as of this moment.

 

[Scott #321]

Just a thought so please don't take offence. Are you positive the PCV valve you are using is rated for use on a turbo engine?

 

[jirwin]

Its the stock LSJ one, so technically its not since it was used on the supercharged model? Not sure that that makes a difference though

 

[jirwin]

Still oil. Yay. I'm so over this ****

Ran it for 2 minutes, no oil
Ran it for 5 minutes a little bit of oil
Ran it for 5 more minutes, more oil yet

https://streamable.com/berufp
https://streamable.com/u6z3ui (after second 5 minute run)

 

[Rauq]

Its the stock LSJ one, so technically its not since it was used on the supercharged model? Not sure that that makes a difference though

Should be the same, open with manifold vacuum and closed with boost.

Still oil. Yay. I'm so over this ****

Ran it for 2 minutes, no oil
Ran it for 5 minutes a little bit of oil
Ran it for 5 more minutes, more oil yet

https://streamable.com/berufp
https://streamable.com/u6z3ui (after second 5 minute run)

In my very limited catch can experience, condensed PCV vapors don't really look like the oil you drain from your engine pan, and that looks a lot more like oil you drain from your engine pan than condensed PCV vapors... In my estimate, you're either missing a baffle in your valve cover and are sucking oil slinging from the valvetrain straight out the breather, or that's not coming from the crankcase.

 

[jirwin]

The turbo isn't hooked up to the catch can/valve cover anymore. So it's coming straight from the turbo

 

[Rauq]

Ah I was still stuck on connecting to the turbo inlet vs the intake tube, plus additional crossed wires from an immature understanding of LNF PCV...

The turbo isn't hooked up to the catch can/valve cover anymore. So it's coming straight from the turbo

sounds like it's not coming from the PCV! Maybe not good news, but at least it's conclusive...

 

[jirwin]

That's my conclusion too. It can't possibly be PCV if the turbo has nothing connected to its vacuum port, right? That seems logical.

So that basically leaves
- Too high oil pressure (70psi cold idle, got my gauge working again), usually not a thing for journal bearing turbos, but hey who knows. Talking to ZZP about putting a restrictor on it right now.
- Too much vacuum from my "custom" long intake tube to place the air filter where the superchsrged guys do?
- Bad turbo?

 

[jirwin]

Welp, no dice. ZZP said try a 1/16" restrictor. I did that and in trying to rule out a drain, I added 2 extra qiarts and drained the turbo straight into a 5qt oil jug. Once it hit 2 quarts (about a minute) I shut it off, filled it back with that oil, and did it again. The 4th time I heard the characteristic "air thru oil" noise when I shut it off. Sure enough, oil again. Womp. Womp.

Video Unavailable

This video is unavailable.

streamable.com

So that tells me it's not the drain, and the reestrictor either isn't enough, or the turbos just bad. I think? Idk.

 

[Rttoys]

Ugh. no offense to zzp, but you can’t be the first one to add a turbo to a 2.2. I’m not sure why they don’t have answers. I’m still thinking too high of oil pressure. It’s just blowing by everything. But I have no experience with this.

 

[jirwin]

I agree, but at least they are being helpful. They actually called me today to discuss. I have another identical restrictor coming in the mail tomorrow. It's 0.035" whereas the one I put on I drilled out to 0.0625" (1/16). Chat GPT says 0.5 to 1qt a minute is adequate, but it likes to hallucinate so who knows. I'm kinda tired of throwing money at it, but one of those turbo-smart adjustable oil restrictors might be in order.

I also have a T with a pressure gauge I can throw on there so I can see what the actual pressure entering the turbo is. It was supposed to come in the mail today, but it didn't.

 

[Rttoys]

Glad they are helping. Just odd they haven’t seen this before.

 

[jirwin]

Dumb thought... Does the balance shaft delete somehow increase oil pressure at that oil gallery?

If the oil is flowing towards the drivers side from the passengers side, it should lubricate those balance shafts along the way. That might mean that since mine are plugged its getting higher pressure at the oil gallery I tapped into than normally expected. I think it's at the same spot as the balance shafts. Would explain why ZZP doesn't know either. It's fairly uncommon to do

 

[jirwin]

With the help of ZZP, I think I had my eureka moment... aka I'm retarded... well at least a little bit.

So... I think I just have my vacuum lines screwed up. I tried to cut them to length so they couldn't possibly get messed up, but I screwed that up apparently. So here are the 3 ports on the turbo we care about:

I currently have 1 going to 2, and 3 going to the intake manifold vacuum source. WRONG. I even sharpied it on my instructions from ZZP "Intake manifold vacuum to BPV (TAN)". So I definitely had it like that at one point, but somewhere along the way I started doing it like I have it now. It should be setup where 1 goes to 3 and 2 goes to the intake manifold. Seeing as 3 isin the turbo volute thing, I am just sitting there pulling massive vacuum on it when I sit there idling. I think that's what's pulling my oil in. Taking another half day to test, but I'm pretty confident that's it.

 

[Rauq]

Fingers crossed, I'll hold my commentary until you post results!

 

[Rttoys]

Interesting. Hope thats it.

 

[jirwin]

More oil than before. Throwing in the towel

Video Unavailable

This video is unavailable.

streamable.com

 

[Desert Sasqwatch]

I give up. The only thing left that i can think of is the oil is coming from the center section thru a seal.

 

[Gtstorey]

I wonder if a seal was damaged from the sucking oil into the wrong parts of the turbo?