question

What would make a tial bov spit oil out?

well if you have a leaky turbo that is spewing oil into the intake stream that might be it

agreed, leaking turbo. Seen the same thing happen on a friends.

are you sure it’s coming from the bov? is it mounted before or after the intercooler? i would think the oil wouldn’t make it out of the intercooler…but i could be wrong.

your turbo is cooked.

Oil will make it through the IC. Ask neon GLH

agreed with newman, its done.

fpgreen is dead :frowning:

that was fast

Maybe i should try a catch can. The car still runs and make boost like normal.

Awww man that sucks. Hope you get it figured out.

A boost leak will make the turbo spin faster than it should at a given amount of boost level. It is trying to compensate for the leak. Your gauge may be reading 25psi but in actuallity the turbo is moving enough air to make say 35 psi (depending on the leak, I’m just throwing out numbers here) on your gauge but you will never see that due to the leak somewhere between the compressor outlet and the throttle inlet.

When this happens you tend to do damage to the internal parts of the turbo (bearings, thrust bearing) this causes end play and damages the bearings from excessive heat. When this happens oil consumption begins. You are spitting oil out of the compressor side. This is generally only caused by a boost leak, compressor surge from a BOV not working at low throttle or boost situations (which I am more than willing to bet you have an 11psi spring in…that thing won’t open at low throttle or boost conditions causing compressor surge…kiss it goodbye) or damage from bearing wear due to lack of lubrication from the overheating of the oil…which causes in and out shaft play allowing oil to be forced past the seals and into your charge piping.

Another thing to consider too is if you have your breather vents back into your air intake that any blow by will be forced into the inlet of the compressor. When that happens you can start to build up oil over time. There is nothing that will correct this problem other than repairing any engine damage if the blow by is excessive.

What do the bearing seals on a Green look like? Are they labyrinth or contact type?

Which spring would you use? Would you elaborate a little more on your spring statement?

Tial’s have multiple springs you can run. I am running a shimmed 9lb spring in mine.

Elaborating on what don said:
I also plan on comparing compressor hosing pressure to manifold pressure with an aux boost gauge. There is a lot of plumbing on subarus, so expect a decent difference, though.

Or do a boost leak test (you can use a modified leakdown tester). Basically you just pressurize the compressor inlet and listen/look for leaks.

It is very hard to see boost leaks without the aid of water/soap mix or the aid of a smoke machine