How to Remove All Banjo Filters

[covertrussian]

This is the #1 reason Subaru turbos die often, second reason is Uppipe cat that breaks up over time. For some reason Subaru thought it was a great idea to put a fine mesh filter into the turbo and AVCS oil feed lines.

 

AVCS Filters

AVCS filters are the easiest to get to and check. Some Subaru's will have the mesh filters right before the AVCS, these have a tendency of getting stuck in the AVCS mechanism.

http://legacygt.com/forums/attachment.php?attachmentid=253914&stc=1&d=1502332136

http://legacygt.com/forums/attachment.php?attachmentid=253917&stc=1&d=1502332136

 

05 LGT bolt didn't seem to have the filter, but my 04 FXT definitely had them and they poped out of the banjo bolts. Dig around in the AVCS oil hole to make sure the filter is not in there, on my FXT, both filters fell out of the banjo bolt and was inside (hard to spot since they are black like the oil).

http://legacygt.com/forums/attachment.php?attachmentid=253915&stc=1&d=1502332136

http://legacygt.com/forums/attachment.php?attachmentid=253916&stc=1&d=1502332136

 

 

Turbo Feed/AVCS Feed

This one is the most important one, if this one is clogged it restricts oil flow to the turbo which causes to starve and fail. Most shops will replace the turbo afterwards without fixing the root cause, clogged turbo feed banjo bolt. Because of this most replacement turbos will fail within the next 10k miles.

 

Remove the bracket that bolts to the up pipe and to the block.

http://legacygt.com/forums/attachment.php?attachmentid=253918&stc=1&d=1502332136

http://legacygt.com/forums/attachment.php?attachmentid=253919&stc=1&d=1502332136

 

Then you can see the oil feed banjo, use a 17mm ratcheting wrench to make your life easier.

http://legacygt.com/forums/attachment.php?attachmentid=253921&stc=1&d=1502332136

http://legacygt.com/forums/attachment.php?attachmentid=259017&stc=1&d=1511964587

 

Filter is still in... pull it out and install the bolt without it. The hard lines have a built in restrictor for the turbo.

http://legacygt.com/forums/attachment.php?attachmentid=253922&stc=1&d=1502332136

http://legacygt.com/forums/attachment.php?attachmentid=253923&stc=1&d=1502332136

 

This filter is definitely clogged, this caused my car's turbo to go out, sadly the previous owner didn't pull it out, thus the replacement turbo might be in a bad shape too.

http://legacygt.com/forums/attachment.php?attachmentid=253924&stc=1&d=1502332213

 

Driver Side Head AVCS Feed

This one requires the most work to remove, it's best to do it while you are replacing the timing belt and the cam seals.

 

Here is a pic of how close the Banjo bolt is to the timing cover, there is simply not enough room to remove it on car without damaging the timing cover. If you grind the hump off, you will have more room to get the banjo out.

http://legacygt.com/forums/attachment.php?attachmentid=253925&stc=1&d=1502332213

 

This plastic cover is in the way and can only be removed with the cam gears removed. You will need to loosen the dip stick tube to get the plastic cover out.

http://legacygt.com/forums/attachment.php?attachmentid=253926&stc=1&d=1502332213

 

Finally easy access to the bolt

http://legacygt.com/forums/attachment.php?attachmentid=253927&stc=1&d=1502332213

 

As expected the filter was in place still

http://legacygt.com/forums/attachment.php?attachmentid=253928&stc=1&d=1502332213

 

And very dirty, if this was on the turbo feed/avcs line the turbo would be dead due to oil starvation.

http://legacygt.com/forums/attachment.php?attachmentid=253929&stc=1&d=1502332213

 

I removed the whole hard line, notice that the bolt that goes into the AVCS side itself doesn't have a hump. That hump makes it impossible to remove this banjo bolt with the timing cover on.

http://legacygt.com/forums/attachment.php?attachmentid=253930&stc=1&d=1502332213

 

I'm going to put the humpless bolt on the head, I also shaved one side of the banjo bolt so that I could squeeze it past the timing cover if I ever have to deal with it again. Do yourself a favor and use new seals on the head it self, you can try to reuse the old seals on the AVCS end, they are easy to replace if they leak.

http://legacygt.com/forums/attachment.php?attachmentid=253931&stc=1&d=1502332213

 

All done and happy!

http://legacygt.com/forums/attachment.php?attachmentid=253932&stc=1&d=1502332213

http://legacygt.com/forums/attachment.php?attachmentid=253933&stc=1&d=1502332213

Edited November 29, 2017 by covertrussian

[HAMMER DOWN]

Nice, the thread & posts below could of save you some time.

 

I came up with away to remove DS AVCS filter bolt, without removing any of TB system. Because people was having a hard time removing the alien head bolts holding the cam gears.

 

In this thread;

http://legacygt.com/forums/showthread.php/2-5gt-turbo-oil-supply-banjo-bolt-filter-removal-61689.html

 

Also as location of all LGT filter bolt, here.

 

http://legacygt.com/forums/showpost.php?p=3382336&postcount=731

 

How I did mine;

http://legacygt.com/forums/showpost.php?p=1326330&postcount=158

 

Mike

[covertrussian]

Also I think there are two types of timing belt covers. First picture below is from a friend's 05 LGT (I think later model production).

http://images.rvsmods.com/var/albums/Cars/LGT/Engine/General/Banjo-Filters/CIMG0760.jpg?m=1395409076

 

This pic is from my 05 LGT that was built in 08/2004. Even with me swapping to a nipple-less bolt I have a lot less space.

http://images.rvsmods.com/var/albums/Cars/LGT/Engine/General/Banjo-Filters/CIMG0777.jpg?m=1395547448

[kbohip]

^^^Mine was made in June '04 and here's a pic of the same area.

[meier motor sports]

spring maint coming, might have to do this. its been 9 years and 140+k.

[SPeC.B_MaZTer]

Does the 2008 model year LGT and Spec.B have these filters in these places as well?

[covertrussian]

Does the 2008 model year LGT and Spec.B have these filters in these places as well?

 

07+ have the turbo oil feed banjo under the intake manifold and turbo inlet, much harder to get to.

[SPeC.B_MaZTer]

I have read that the 08+ do NOT have the filter, is this a fact? is their a link to a thread on these model years?

[Max Capacity]

They do have the filters the passenger side one is up top.

 

IMO the top location tends not to keep particals in the filter, IMO as the oil pressure falls to zero when you turn the engine off the crap falls out of the filter...?

 

Does that make sence ?

 

I should check my 09 to see if theres a bump on the fitting behind the TB cover.

[shiby]

This is probably a stupid question, but I have not done this on my car personally yet so I don't know if filter is still there, but the general consensus is to remove the filter and just have bolt because dirty oil > no oil, correct?

Is there a downside to having the filter removed? Less oil pressure, etc? Anything I should be worried about for not having it in

[covertrussian]

Yes dirty oil is always better then no oil. Change your oil and filter often and you should NEVER have that dirty of oil.

 

Oil pressure would actually increase to the turbo, due to less restriction, especially with thicker oils.

[SPeC.B_MaZTer]

I am finally getting around to removing these filters. Last week I decided to install the Samco hoses I ordered a while back and I noticed the stock turbo inlet was dry-rotted and cracked so I ordered a new Perrin inlet.

Well I started my venture today and realized I'd be better off removing the intake manifold, which lead me to remember about these filters.

I got most of the prep work done and hardware removed until I hit my first obstacle.

 

How do I remove the intake manifold with the fuel lines and pressure regulator (driver side) still attached since they route across the manifold's base? I am either not seeing where they are bolted and attached somewhere(flashlight in mouth) OR I will seriously have to remove each Phillips screw-head clamp and rubber fuel hose. I highly doubted this and it was getting darker; I also had to leave for my mothers birthday dinner.

Tomorrow I will again attempt to remove the intake manifold, the filters, and install the turbo inlet.

 

 

*I pulled the intercooler and downpipe for access and now my stock VF46 is begging me to sell him and buy a BNR 18G and new infamous oil line.... any input is much appreciated and seriously would now be a good time to install a turbo? can the 18G run okay/tune on stock Spec.B injectors? I have the rest of the supporting mods.

[Spooph]

@rao, would it be possible to add the "how-to" part of the driver's side bolt to this sticky please?

http://legacygt.com/forums/showthread.php/2-5gt-turbo-oil-supply-banjo-bolt-filter-removal-62371.html?t=62371

 

Luckily SPeC.B_MaZTer bumped it to make it easy for me to find, but it would be much more convenient if it was in the sticky. Thanks, and just a suggestion from a newbie...

 

EDIT: In addition to any other pics we need, since I'll be doing this, I can get whatever pics might be needed to fill in the gaps.

[Max Capacity]

I am finally getting around to removing these filters. Last week I decided to install the Samco hoses I ordered a while back and I noticed the stock turbo inlet was dry-rotted and cracked so I ordered a new Perrin inlet.

Well I started my venture today and realized I'd be better off removing the intake manifold, which lead me to remember about these filters.

I got most of the prep work done and hardware removed until I hit my first obstacle.

 

How do I remove the intake manifold with the fuel lines and pressure regulator (driver side) still attached since they route across the manifold's base? I am either not seeing where they are bolted and attached somewhere(flashlight in mouth) OR I will seriously have to remove each Phillips screw-head clamp and rubber fuel hose. I highly doubted this and it was getting darker; I also had to leave for my mothers birthday dinner.

Tomorrow I will again attempt to remove the intake manifold, the filters, and install the turbo inlet.

 

 

*I pulled the intercooler and downpipe for access and now my stock VF46 is begging me to sell him and buy a BNR 18G and new infamous oil line.... any input is much appreciated and seriously would now be a good time to install a turbo? can the 18G run okay/tune on stock Spec.B injectors? I have the rest of the supporting mods.

 

 

I guess you got through this, but it's much easier to lift the intake by removing it at the TGV's to heads and the fuel lines from the shock tower. Just get new gaskets. Also tighten the gas line clamps under the manifold.

[Shogun506]

So this might be a stupid question but I'm assuming you need to drain your oil before you start or do this during an oil change, is that right? Would a dealer have any objections to doing it?

[covertrussian]

No need to drain the oil, if the car is cold it drains down to the oil pan.

 

Never hurts to change the oil though, so remove the filters, drive a few miles, change oil .

[Enlight]

Fairly upset that I saw this thread just after changing my timing belt.

[rebourne]

I can't get the turbo side banjo bolt off! Arg! My 17mm was too long, so I bought a shorty. That fits, but now I can't get any leverage on it. PB Blastered it too. Any more hints?

[rebourne]

Got it, went behind that wrapped pipe with an articulating ratchet.

[covertrussian]

Ratcheting wrenches go a long way with this job, makes life much easier

[rebourne]

Yeah, I used an articulating, ratcheting 17mm. This one from Lowe's http://www.lowes.com/ProductDisplay?productId=3387660

[Sparkey]

So how are you guys getting the crush washer on the inside of the turbo bolt?

 

That is my hang up. Are you guys just going with one crush washer? It didnt look like one even came off of the inside.

[covertrussian]

Very carefully, it's a pain not to drop it. Now that I have SS flexible lines it's actually much easier to replace the copper washer.

[Sparkey]

Very carefully, it's a pain not to drop it. Now that I have SS flexible lines it's actually much easier to replace the copper washer.

 

Very careful is an understatement...

 

I had mentioned something about getting new lines in a thread and was told not worth it... im assuming they never did this If I werent Elbow deep in it already and needed the car ready to go in 3 days - I may have went that way.

 

But in the "What did you do today" thread someone suggested fishing line - I had safety wire. Brilliant! Took maybe 5 min after 4 hours of trying everything else. This is what I used...

 

http://i65.tinypic.com/14vmx4x.jpg

 

I made sure I had a perfect view of it, and had the bolt with one washer already on it and in the oil line. Then I dropped it down, pushed the bolt into it, started threading it and then pulled on the wire and it pulled out while the bolt and washer fell right into place.

[covertrussian]

New lines are not worth it unless yours is leaking or your going bigger turbo, I went with bigger turbo so cut mine to pieces.

 

I just remembered how I did it before, I would sandwich the copper washer between head and oil line, align it, then keep pressure on the oil line and insert the banjo.