Turbo Oil Supply Screen Cleaning

[f-wolf]

I had one fitted on top of the turbo not in between the oil feed hose for 3 years never had a problem with them on but I then removed it as I was told by a tuner that they can get blocked and need cleaning from time to time and they are only good for newly rebuilt fresh engines.

ADVICE Turbo Oil feed hose with or without pre-filter - PassionFord

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A well known turbo specialist wouldn't recommend to remove the filter - however said if he were fitting a turbo, he definitely wouldn't be putting the filter in! Go figure.

Australian Ford Forums - TT turbo oil supply filter maintenance

[f-wolf]

http://www.npiaaustralia.com.au/nizpro/show_news.php

Posted on 24 Feb 2010 by Nizpro

Turbocharger Failure.

Over the last few years we have seen a rapid increase in turbo failures on BA-F, from standard road cars to modified ones using the standard turbo system as designed by Ford. Now many of you may know that the turbo oil feed line has a small screen filter in it located in the fitting that comes out of the block. This filter from Ford had no schedule service life, in other words it is not recommended to be replaced, although we always replace them when replacing the turbocharger.

Now over all the years I have been working on turbo high performance cars I have never seen a filter in the oil supply for the turbo. I would rather have dirty oil going to the turbo rather than having a blocked filter that you know nothing about it and have zero oil getting to the turbo.

So here is the good bit. On a Territory Turbo, this in line oil filter is fitted after the cylinder block but before both the turbo feed line take off point and the oil pressure switch. So when it becomes blocked the oil pressure switch does not get oil pressure, causing the oil light and warning alarm to stay on after start up for up to 10 to 15 seconds. This is the first warning that the filter is blocked and the turbo is starving for oil. Now if you have a Territory and this is happening get it looked at ASAP. Ford now have a larger filter now available, although it is at your cost if you want it replaced. You may have it replaced under warranty if you are experiencing the above problem , I am not sure.

Here’s the even better bit, on an XR6t when the filter block’s, engine oil pressure still gets to the pressure switch, even when you have no oil pressure getting to the turbo. The way they have located the filter vs oil pressure switch is different between XR6t and Territory but the lack of oil remains the same. Causing turbo failure.

As far as I can see I would recommend either changing this filter every 10,000 kms or better still removing it totally, again if you are changing you oil every 5000kms on servicing having the oil filter is not necessary and there must be hundreds of XR6T’s out there staving there turbo’s of good oil supply.

The Territory we just did had a filter that looked very clean when removed but still had the problem, remember to replace the turbo will cost you $2500 and up when its failure may well have been prevented.

Simon.

Proprietor

Nizpro Turbocharging.

Edited 15/04/10 01:19 AM by f-wolf

[XF Falcon]

I'm sure if the filter is THAT blocked, when you turn off the engine the turbo would be making nasty bearing grinding sounds.

I'm sure so long as you do regular oil changes (5000km or less) then you shouldn't have a problem. Just treat your car with a bit of mechanical sympathy and they should last a very long time

[Benji_vs]

Turfed mine, it made the turbo spin down quieter when turning off the car

[PHANTMXR6]

Bet that Nizpro quoted post doesn't last long on here.

[tab]

Why, it's properly referenced? You'd think that would be OK for them?

[PHANTMXR6]

Didn't think you guys liked much reference to/from/about Nizpro on this forum?

[sexual harrassment panda]

has anyone measured or know what is the I.d. of this oil inlet on the turbo as shown in the pic by f-wolf. The size suggested on the garrett website is barely over 1mm?? or does it have a check ball or similar down the hole?

The size that garret suggest is a minimum - any orifice would need to allow sufficient flow at low oil pressure to cool and lubricate the turbo bearings as well. Garrett usually says up to 60psi is ok for ball bearing turbo.

if your really keen get the specs from garret as to how much oil flow the turbo requires. Then go to a hydraulics shop and get a pressure compensated setup put in allowing the desired oil flow regardless of engine oil pressure. Would't be any bigger than the ETM braided line kit and woulde fit in the same area too.

[rockafellqeinstien]

I did my fg on the weekend (100,000km)It wasnt blocked but was very restricted doing the blow through test compared to the new one.

Even though I had ramps I took the air box out and went through the top - was heaps easier.

The only issues I had were that I wasnt sure how far to screw the filter back into the block, I just went unitl I got woried. I also cleaned up the threads on the sensor fitting and put a bit of new gasket/thread sealer on to be safe.

Its a biatch of a job but a set (24mm) of deep sockets and a 24mm spanner (get it to jam agains the inlets so everything doesnt spin) and it was pretty easy.

Thanks for all the advice

I also rotated my wheels and broke the lock nut adapter (cracked) so it wasnt all smooth sailing

Edited 19/04/10 02:01 AM by rockafellqeinstien

[Smoke them tyres]

No wonder the feed pipes block also with:

-low oil flow from the blocked/partially blocked filter

-heat from under bonnet temps (city driving)

-heat from exhaust manifold

-heat soak on shutdown

-no oil cooler

The critical element is the flow and temp at the area where the oil has to do the "work". Even with an oil cooler, insufficient flow (whether hot or less hot) is the killer.

The main filter should have done it's job. This filter adds nothing to reliability.

Do we see less failures with it fitted than not?

Edited 19/04/10 09:31 AM by Smoke them tyres