Oil in Air Filter

[Ca_Silvia]

I have been fighting this since before i installed my 2871. On track days ecspecially, i get oil in my air filter, enough to start leaking out. That plus i have considerable oil in the intercooler pipes.

Ive googled this issue apparently it suggests blow-by, but i have been running a home depot catch can for 2 months now and not a single drop has acumilated.

Is it something else besides blow by or is it a terrible catch can design?

I used the FR sport SS line which have the oil restrictor built in so i doubt its that.

Any ideas?

[kikcaffine]

Turbo oil seals.

[Ca_Silvia]

Brand new turbo, not even 1000km on it

[CakeEater]

Maybe the reason you have no oil in the catch can is because it is indeed a terrible design and you have alot of oil just flowing back into the intake....

Remove the catch can and see what happens.

[Ca_Silvia]

Maybe the reason you have no oil in the catch can is because it is indeed a terrible design and you have alot of oil just flowing back into the intake....

Remove the catch can and see what happens.

I was having the same issue prior to me installing the catch can.

[boost_boy]

I have been fighting this since before i installed my 2871. On track days ecspecially, i get oil in my air filter, enough to start leaking out. That plus i have considerable oil in the intercooler pipes.

Ive googled this issue apparently it suggests blow-by, but i have been running a home depot catch can for 2 months now and not a single drop has acumilated.

Is it something else besides blow by or is it a terrible catch can design?

I used the FR sport SS line which have the oil restrictor built in so i doubt its that.

Any ideas?

You are having an issue with your turbocharger. Either you're over-oiling it or your return line is kinked, but the issue is in the snail.

Dee

[Buddyworm]

How's the catchcan plumbed? You got hose going to the intake pipe after the can or what?

[Ca_Silvia]

I have 2 catch cans, 1 for intake and exhaust, the exhaust one is running from the valve cover to CC then to the intake pipe after the AFM.

Im going to remove the 90* i have in my current oil return and see how she likes that. Ill let everyone know if it solves the problem.

You are having an issue with your turbocharger. Either you're over-oiling it or your return line is kinked, but the issue is in the snail.

Dee

If it turns out that i am supplying it to much oil and i am already running a restrictor, what are my options?
Modified by Ca_Silvia at 7:14 AM 9/24/2009

[boost_boy]

I have 2 catch cans, 1 for intake and exhaust, the exhaust one is running from the valve cover to CC then to the intake pipe after the AFM.

Im going to remove the 90* i have in my current oil return and see how she likes that. Ill let everyone know if it solves the problem.

If it turns out that i am supplying it to much oil and i am already running a restrictor, what are my options?

Modified by Ca_Silvia at 7:14 AM 9/24/2009

What size restrictor are you using? If your turbo didn't come with a built-in restrictor, then it's best to follow the manufacturers recommendation of what restrictor best suits your turbocharger.

Dee

[Ca_Silvia]

FR Sport line use a .062 restrictor, Garrett specifies a .04 but disclaims that the restrictor size is dependant on oil pressure leading in to the turbo.

I'll start with the oil return line and then if that doesn't solve it ill try a larger diameter restrictor

[CakeEater]

You'll need a smaller restrictor NOT larger.

If you have .062" and Garret says to use .040", you already have a larger one.

Any larger and you will have more oil than before. Try to find a .040"

[Ca_Silvia]

Ya your right sorry, mis-typed that

[CakeEater]

Haha....I saw your post on driftwest and noticed you made it before this, so you know what your doing...

[Ca_Silvia]

The revised oil return helped out significantly, catch cans actually worked and trapped quite a bit of oil. However i am still having oil pass in to the air stream. ATP was the only one who carries -4 oil restrictors so i will still be installing one.

Thanks for the tips guys!

[CakeEater]

That was most definetely a huge let down......

You were doing really good until the oil got the better of your couplers.

It was good to meet you aswell....