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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 03-22-2012, 12:55 AM   #1
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Default Oil all over charge pipes

I have a not so slight issue ops:

Since the Turbo has gone on i have had after a long full boost drag i get on decel, a Oil Smoke cloud.
Thought it must be a PCV issue that i will sort out.
It is a TD04 on a ETD manifold.

Went for the longest hardest boosted drive i have done so far and threw the car in the garage afterwards.
Next morning went down and noticed a couple of oil pools under the nose of the car.
Closer inspection showed these dripped from the lowest points of the charge pipes.
Pulled the pipes and found out my intercooler make a great CATCH CAN :evil:


BOV had oil dripping out of it.


Throttle body/intake manifold messy too.



Now i am thinking that my Oil Return could be the issue.
It is a Speedflow -8 size stainless line which was drilled just under the air con bracket.
It looks like it may just have a ever so slight uphill section

The wetness is a mixture of degreaser and oil.
Tried to clean the area a little first.

The issue with getting it completely downhill is the connection touches the air con bracket.
Maybe i can get a extension fitting to angle it uphill and further out?

I wish i had of had it run like this guy,


Would this be my issue do you think??
Is -8an a correct size for a Greddy Td04?

Could my issue be the sump pressurising and pushing the oil back up the return line?
There is also oil on the outside of things near the return such as the coolant hose?
Could this be a sign of a Pressurised sump squirting past the threads on the return line?

Any help would be much appreciated.
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Old 03-22-2012, 01:15 AM   #2
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Also.. I forgot to add.
On the Oil feed side i am running a -4an line with a -3an fitting to the block.
I assume this would not be too much over kill for the TD04 Turbo?

I am also using a banjo fitting which i believe is the original.

Last edited by dweezle; 03-22-2012 at 02:10 AM.
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Old 03-22-2012, 08:45 AM   #3
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You may need a restrictor on the oil feed. I forget what size is recommended, but mine is actually very small.
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Old 03-22-2012, 09:32 AM   #4
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+1 for restrictor. somewhat related: I was at pepboys in the "Speed Shop" looking for a -4 fitting for my oil feed line. The parts guy insisted that -4 was way to small and said i need to go -6. However after looking up feed line kits and finding that most were a -4 he then avoided talking to me me.
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Old 03-22-2012, 11:12 AM   #5
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I never ran a restriction with my Greddy setup, which is a TD-04 turbo. I ran a -3an line to the greddy banjo bolt, and a -10an drain line. I don't think a -8 would be a problem, the line itself is not the major restriction, the fittings on the end are. The 3/8NPT-10AN fittings are more restrictive than any part of the line.

You drain line doesn't look horribly flat, it goes up hill enough. If you have a smoke cloud on decel, it's more likely bad piston rings, or rather the engine sucking oil past them.
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Old 03-22-2012, 11:45 AM   #6
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Josh, the banjo bolt serves as a restrictor, generally, that's why our greddy setups don't need them. I had a -4 and a banjo and never used anything beyond that, but if i was using a -4 feed with a straight AN fitting, i would likely have used a restrictor.

OP, I'd have a hard time believing the -4 to banjo is sending too much oil into the chra and pushing oil out into your intake tract. Also, I'd be surprised if your return line was an issue either, based on the little I can see from that picture.

How old is the turbo? Do you tend to run it hard and put it away without letting it cool down much? A turbo rebuild might not be a bad idea, as oil is definitely spewing through the seals.

The smoke could be from a ridiculous amount of oil blowing all the way through the intake tract, or it could be a ring/valve issue.

I'd start with a comp/leakdown to hopefully rule out any issues with the engine itself, then inspect the turbo for shaft play and possibly rebuild/refresh it.
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Old 03-22-2012, 11:46 AM   #7
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Quote:
Originally Posted by romanservices View Post
+1 for restrictor. somewhat related: I was at pepboys in the "Speed Shop" looking for a -4 fitting for my oil feed line. The parts guy insisted that -4 was way to small and said i need to go -6. However after looking up feed line kits and finding that most were a -4 he then avoided talking to me me.
nice. :-)
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Old 03-22-2012, 05:29 PM   #8
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Thanks all!! Much appreciated.

It is a brand new td04 so i am assuming the turbo is ok.

Will do a compression test and see what that says.
It has 177000 kms on the engine but was making a healthy 72 rwkw with no oil consumption before the turbo was added.

I am thinking rings too. Will a compression test prove this??

Thanks again
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Old 03-22-2012, 06:34 PM   #9
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compression will tell you if a compression issue. leakdown will help try to figure out why
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Old 03-23-2012, 11:50 PM   #10
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Check that your PVC is correct, sometimes if its stopped up it can cause drainage problems with the turbo
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Old 03-27-2012, 09:09 PM   #11
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OK, i still have not had a chance to do the compression test. DAMN WORK.
But i did notice something dumb!!

The Breather line from the hotside is blocked off with a bloody BOLT!!
This is from the turbo install.
Now correct me if i am wrong, but lets just say the PCV valve leaks, which i think it might under boost, then the crankcase would be getting pressurised and have no where to escape from??

I am going to try and get everything back on the car and just use a Fuel filter as a catch can on the hotside with it VTA.

Could this be the issue??
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Old 03-27-2012, 10:46 PM   #12
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Yeah that runs to a open filter on mine, I'd highly suggest running it to a can while checking if that's the problem, to avoid the mess. Just make sure it's still open.
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Old 03-28-2012, 12:09 PM   #13
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Quote:
Originally Posted by dweezle View Post

Went for the longest hardest boosted drive i have done so far and threw the car in the garage afterwards.

Stop venting your damn valve cover to your intake. get a VTA catch can. Or just point that stupid valve cover hose at the ground.

Also, you're gay.
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Old 03-28-2012, 08:55 PM   #14
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Quote:
Originally Posted by Faeflora View Post
Stop venting your damn valve cover to your intake. get a VTA catch can. Or just point that stupid valve cover hose at the ground.

Also, you're gay.

What the??
Never once said i was venting the valve cover to my intake?
Or do you mean the PCV line to the manifold?

Anyways, i just plumbed the hotside vent to a Fuel filter with both inlet/outlets at the top.
Like a small catch can.
Went for a small run then and no oil.. so fingers crossed.
Thanks all for your help.
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