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Will this cause problems?

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ShowShine

Probationary Member
8
3
Apr 9, 2020
KNOXVILLE, Tennessee
Do you guys think that this oil outlet setup could cause my turbo to leak oil past the seals?
My turbo outlet/inlet are slightly angled, and where the outlet hooks into the oil pan it's angled down.
My car is slightly burning oil from somewhere and I've been trying to track down.
 

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Is the image flipped? It looks like the intake and cold side are on the passenger's side.

That oil return looks a little dicey. It's supposed to work by gravity, so the outlet should really be lower than the inlet; it looks almost perfectly level in the picture. I don't think the elbow should necessarily be a problem, but I would move whatever fitting you have on the pan a little lower. If you can clock the center section of the turbo you can probably eliminate the elbow altogether.
 
Agreed.

Oils just going to pool in the line as it is now. Need to clock the center section if possible and make it run down and angled over to the pan in a straight shot. Unfortunately that means redoing the fitting in the pan.
Otherwise, get a small electric scavenge pump and forcibly extract oil from the center cartridge, which equals more money and parts.

So yes, I could definitely cause buildup and pushing oil past your seals IMO.
 
Last edited:
Thanks for the info.
The intake is on the passenger side, that was the easiest way to mount do to the exhaust manifold.
 

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Yeah thats going to be a problem. If yiur struggling then buy an inline pump and then you can pump the oil from the turbo to the pan. This is how some builds have to go when they mount the turbos level to the block or far away and no direct line to the pan that can be gravity fed.

Its a semi cheap option compared to keep blowing seals out from lack of oil drain. While the oil inside will still get pushed out abit its not ideal to rely on that force alone
 
Yeah thats going to be a problem. If yiur struggling then buy an inline pump and then you can pump the oil from the turbo to the pan. This is how some builds have to go when they mount the turbos level to the block or far away and no direct line to the pan that can be gravity fed.

Its a semi cheap option compared to keep blowing seals out from lack of oil drain. While the oil inside will still get pushed out abit its not ideal to rely on that force alone
If it is slightly leaking oil because of a bad return does that mean the seals blown? The turbo probably doesn't even have 2k miles on it.
I was hoping with a proper return it wouldn't push out of the seals anymore.
 
If it is slightly leaking oil because of a bad return does that mean the seals blown? The turbo probably doesn't even have 2k miles on it.
I was hoping with a proper return it wouldn't push out of the seals anymore.
If it cannot drain properly then its likely backing up and oils leaking past the turbo seals. At least thats my assumtion. You can blow a turbo or its seals by having it the way you have it. Thats why drains are super important to get right.
 
My suggestion, after fxxking with my drain line for like 6 hours, with different combinations, and working with rigid AN lines, and very low tolerance, is to just use pushlok with some nice flexible rubber hose. Or just flanges and clamps with rubber oil line.

Idk if its possible but moving the fitting on the pan down would help. Maybe experiement with different angles. A 45 instead of 90 leaving the turbo may prevent the low spot in the line.

EDIT: looking at the pic again, it looks like the fitting on your pan is angled up. Makes it difficult! A little straighter angle off the pan would help, or moving it down
 
I would say it's an issue, not only will you have improper drainage, it will also cause some heat retention in the turbo. That will mean longer cooldown times higher exhaust temp etc.
 
Moving the fitting down in the pan won't help, as then it will be buried in the rest of the sump and oil present in the pan will cause a similar problem combined with windage.

The drain needs to enter the pan high and at a level or downward angle as much as possible. In this situation since the turbo is so low, a scavenge pump might be the better option to avoid total redesign and coat of alot of fittings etc.
 
The intake is on the passenger side, that was the easiest way to mount do to the exhaust manifold.
Ah, that explains it. I haven't seen that kind of manifold in a while.

IMO, the fitting on the pan needs to be a little lower and angled downward, or at least parallel to the ground, and the turbo center house needs to be clocked.
 
I don't like any of the angles either. If anything, I'd have some tube fittings made that angle things as smoothly as possible and use a piece of PTFE hose, but even then it's so shallow of a drain that I think it'd have trouble draining properly.
 
Could always cut the bung off and position it with a better angle. I have had to this in the past with oil pans that someone else had done a bad job of with fittings.
 
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