Notice: We request that you don't just set up a new account at this time if you are a previous user. If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.
Hi there, just fitted the turbo 2 weeks ago and have noticed oil coming out of the compresor side... garrett says:
a) as sump does not have baffles, sump oil might be splashing back into the turbo oil outlet, not allowing the turbo to drain its oil quick enough... so it would spit oil out through the compresor seal.
b) seals might be gone
What do you guys reckon is more likely to happen?
PS.Its a "BRAND NEW" garrett turbo & intercooler fitted to 1hz diesel engine (running only about 9psi).
Looking at the pic, unless it's been on some fairly extreme angles, it won't be spashing back up from the sump through the drain pipe. Is it a ball bearing Garret? If it is, they only need a very small amount of oil in the core, and you should be running a restrictor in the feed line (1mm or 1.5mm diameter from memory). I have heard of cases where people have run ball bearing turbo's without the oil feed restrictor and the oil pressure causes it to push past the seals, or in extreme cases, blow the seals out.
This is exactly what happened to me. For me it is a lot wors and I'm looking to tap the return line somewhere else as it is a lot worse for me. It has coated the entire intake piping including my brand new I/C. It has also caused my pyro to spike when it shouldn't. As I said, I'm now looking to run the return line somewhere else into the block.
ferret wrote:Looking at the pic, unless it's been on some fairly extreme angles, it won't be spashing back up from the sump through the drain pipe. Is it a ball bearing Garret?
Hey Ferret, its just a standard bearing turbo and it hasnt been offroad since the turbo mod , so no weird angles... yet
This restrictor you mention, can it still be used with standard bearings? And what is it?
I will have to give garrett another visit, they might just end up replacing the turbo or something... I hope
Sorry ferret. Didn't read all of your post before replying. Mine is a ballbearing turbo. Guys I'll make a couple of calls tomorrow. There is a guy up here that is very well known from the old turbo touring car days (ie sierra's and gtr's) I'll give him a call tomorrow and see if I can get some info and get back to you
toughnut wrote:This is exactly what happened to me. For me it is a lot wors and I'm looking to tap the return line somewhere else as it is a lot worse for me. It has coated the entire intake piping including my brand new I/C. It has also caused my pyro to spike when it shouldn't. As I said, I'm now looking to run the return line somewhere else into the block.
mikesmith wrote:where do u get this oil restrictor from??
i thought if u look in the feed line on the turbo itself its has a restrictor in the fitting??
Mike, I have put the turbo together with factory parts and there is no restrictor in the line, its just a genuine toyota pipe thats goes to the turbo housing.
Do u have blow by in the sump?.....take off the oil cap while running and look for white smoke....
Is the rubber return hose as big as (internally)the turbo oil outlet pipe...any restriction at all will cause oil to back up....
Do u think the level of the pipe into the sump is below oil level or ontop of??? (measure length of dipstick....it could be that the crank is throwing oil into the return pipe.....my oil return on the petrol was on the second sump,. or the alloy part...fairly high up...about crank shaft height.
Andrew
I'd be checking the simple and cheapest things 1st. One known problem on aftermarket turbo'd 1Hz engines is a certain amount of "blow by" which can push oil out the rocker cover breather and into the turbo inlet as that's where it's plumbed back to. Have a look around where this breather tube is plumbed and see if any excess oil is evident. On some of the 1Hz's you need to close up the breather in the rocker cover a little (DO NOT CLOSE ENTIRELY) to reduce the amount of oil entering the breather tube.
Another good idea with 1Hz's is vent the breather to an air/oil separator tank then vent the clean air back to the inlet side of the turbo after the oil in the breather tube has been separated. This excess oil can then either be emptied out or plumbed back to the sump either by a Tee on your turbo return or another fitting on the sump.
There was a good article in the latest issue of Zoom magazine about turbo oil drains and bigger is definitely better and 5/8" (16mm) should be considered an absolute minimum.
Regards Andrew.
We are Tig welders, gravity doesn't worry us.
[img]http://www.studmonkeyracing.com/forums/smilies/weld.gif[/img]
I put an aftermarket turbo on my old 1HZ and don't recall having excess oil in the intake, but I would recommend the catch can idea. On a really steep incline once (and at high rpm) all the oil ran to the back of the rocker cover where the breather runs out of and was sucked into the inlet of the turbo. Engine starting running on the oil. Even when I swtiched the key off, rpm still kept sky rocketing. The old girl was valve bouncing big time(so was my sphincter valve) until I pulled into 4th and stalled it. Then slid out of control back down to the bottom of the hill. Same thing actually happened to a mate with an NA 1HZ. But the point of my story is you might kill two birds with one stone with this idea...
dow50r wrote:Do u have blow by in the sump?.....take off the oil cap while running and look for white smoke....
Is the rubber return hose as big as (internally)the turbo oil outlet pipe...any restriction at all will cause oil to back up....
Do u think the level of the pipe into the sump is below oil level or ontop of??? (measure length of dipstick....it could be that the crank is throwing oil into the return pipe.....my oil return on the petrol was on the second sump,. or the alloy part...fairly high up...about crank shaft height.
Andrew
-Blowing no oil and smoke from the rocker cover breather. all good
-The rubber drain hose is toyota genuine. all good
-I drilled the sump just 10mm below the sump's top edge, and the dipstick sits about 100mm below the pipe... meaning that the drain is around 100mm above the oil level. any good I hope it is.
awill4x4 wrote:I'd be checking the simple and cheapest things 1st. One known problem on aftermarket turbo'd 1Hz engines is a certain amount of "blow by" which can push oil out the rocker cover breather and into the turbo inlet as that's where it's plumbed back to.
Im not running any rocker cover breather hoses yet, as toyota has ordered them from japan... so, it is easy to see that oil and smoke doesnt come out of the rocker cover breather.
where does ur breaker go to atmosphere or manifold? as boost into breather cause smoke
had to ask obviouse first
is your breather blocked /restricted
is your aircleaner suitable for turbo and is it clean
what oil u using
how long is a short stick???
http://www.4wdaction.com.au/shed/index.php?id=1097&im=1
[quote="squik"]He He... every time I turn off my protection my box gets slammed with spam....
[/quote]
I reckon the hose is too short at the turbo end. It doesn't cover the ridge that looks like it should help seal with the hose clamp, but I can't see any hose past the edge of the clamp anyway.
I put a reply in the 4wd monthy forum thread with a pic of what I mean.
I have been having the exact same problem with my td42 aftermarket turbo glide kit (I bought 2nd hand). It is as good as new, but I still get a little oil leaking out and around the compressor side.
Being a hi-mount turbo the return line is plumbed into the side of the block along with the alternator return line (in a t-piece arrangement). I have always had my doubts as to whether this is free flowing enough or not...
[quote="MSCHIF"]SPUA its like shaving a barbie dolls head, amusing but pointless.[/quote]
From the bit of looking around I did on this subject. A blocked filter or restriction on the air inlet side can also cause compressor side oil leaks, as the negative pressure (or vacuum) created by the impeller can draw the oil past the seals.
I had a bit of a weep on my discharge hose and cleaned the filter and it has improved, so has the fuel economy. Might be worth a check. I'm a bit suspect that the standard Patrol air filter is not big enough for a turbo setup, as your trying to flow at least 50% more air on reasonable boost. This would also lead to low inlet pressures at the turbo. I'll throw a differential pressure gauge on it one day and have a look.
Another possibility is the drain blocking up, which can be a problem with using the vac pump oil drain on patrols. A sump drain should be pretty good though.
Do a bit of a google search on turbo compressor oil leaks and you'll find a fair amount of info.
, so no weird angles... yet 
