turbo blues, any ideas

Post by **Tweaktac** » Wed Jul 07, 2004 5:59 pm

Hey everyone, well i recently purchased a t28 from a s14 in japan that had 22000k on it and was in "excellent" condition... I purchased it using the 'buy it now' for $450 shipped from the jappartspecialists ...i know you have seen them on ebay... anyway, I installed the turbo probably 2 months ago, and today i Just opened my hood and noticed there was oil around the opening on my Apexi bov... so i was curious and pulled off the pipe that was hooked up to the hotpipe elbow off my compressor... guess what... oil..a lot of oil... damn it! I am pretty sure the oil seal on the turbo is going...what should i do? if anyone has any ideas or thoughts or just feel like posting, feel free..i am open to anything....thanx!

Post by **GotBoost4Yall** » Wed Jul 07, 2004 5:59 pm

get an estimate on a rebuild, if you still have the t25 put it back on for now.

Post by **NeedCAforS13** » Wed Jul 07, 2004 5:59 pm

can't rebuild a ball bearing center cartridge (well, you can, but it will be $400+ and a new cartridge is about the same price;))

Sean

Post by **GotBoost4Yall** » Wed Jul 07, 2004 5:59 pm

the joys of turbos.......,ehhhhhhhhh

Post by **boost_boy** » Wed Jul 07, 2004 5:59 pm

Quote »can't rebuild a ball bearing center cartridge (well, you can, but it will be $400+ and a new cartridge is about the same price)[/quote] If not more! I figure if you got that kinda money, but not another penny more, you may as well invest in a more efficient turbo anyway and possibly one of those SS autochrome manifolds or even have someone weld a T3 flange onto your manifold. Just because it's from Japan doesn't mean it's top quality. I would never purchase a turbo from Japan when they sell them a dime a dozen here in the U.S.; especially knowing that those folks are drift monsters.

Dee

Post by **pulsar gtr** » Wed Jul 07, 2004 5:59 pm

Well, the oil could be caused by getting blow by, which will cause the oil to go from the valve cover to the hose after the airlfow meter which will shoot it through the bov, which will make you think that your turbo is blown.A quick test, reroute the hose from the valve cover to a bottle and drive it for a bit and see if there is more oil comming.I have a feeling that you are getting blow by.

Good luck,PULSAR GTR

Post by **boost_boy** » Wed Jul 07, 2004 5:59 pm

But if oil is coming from his BOV, it wouldn't be necessarily from blow-by because blow-by happens after the compression stroke and does not transfer its effects to the exhaust ports or intake ports. I have experienced blow-by and the only thing it does is spit-up oil all over the engine bay, but did not ever cause oil to fly out of my bov. This is usually an issue with the turbocharger's seal giving way and allowing oil to flow back through the cool side of the turbo and into the intercooler which in-turn finds it's way out of the bov(s).

Dee

Post by **float_6969** » Wed Jul 07, 2004 5:59 pm

I don't totally agree with this. The oil enters the intake piping via the PCV system. My rings WERE bad and I was getting blowby. I'm rebuilding the motor right now and I know I was having problems and I WAS gettting oil in my intake piping. It was greatly reduced when I got an oil catch can, but it didn't totally fix it. I think the way to check would be to see if there is oil on the suction side of the turbo. If there is then it's blow by and you've got bad rings. If it's not on the suction side and ONLY on the pressure side, the I'd go with Dee and say it's a blown seal....

Post by **pulsar gtr** » Wed Jul 07, 2004 5:59 pm

Well, it happened to me, I was getting oil spitted out of the bov, turbo was full of oil from the intake side and exhaust side, (I thought my brand new t28 turbo blew), then I rerouted the valve cover line to a bottle (this line usually goes from the valve cover to after the afm), I never had oil spitting out of my BOV ever after, and the bottle got some oil in it, when ever I push the car.So yes, you will get oil spitting out of your bov if you get blow by.

PULSAR GTR

Post by **boost_boy** » Wed Jul 07, 2004 5:59 pm

Quote »I don't totally agree with this. The oil enters the intake piping via the PCV system. My rings WERE bad and I was getting blowby. I'm rebuilding the motor right now and I know I was having problems and I WAS gettting oil in my intake piping. It was greatly reduced when I got an oil catch can, but it didn't totally fix it. I think the way to check would be to see if there is oil on the suction side of the turbo. If there is then it's blow by and you've got bad rings. If it's not on the suction side and ONLY on the pressure side, the I'd go with Dee and say it's a blown seal....[/quote] This would only apply if you route your ventilation tube from your exhaust cam cover back into the intake system as it was intented from factory. Then and only then will you get this effect. Most members including myself have left the breather tube open, hence you hear some people saying they get oil all over their engine bay.

Oil will not exit through the intake manifold unkess you just got major problems and even then, it will still have to clear the throttle plate which is why I can't see oil going backwards through your intake system, out the throttle plate back down through your piping and out through your BOV. It would normally come from the cool side of the turbo. The best thing to do is inspect the cool air output of the turbo and look for oil. I'm 99% sure you will see it. Most CAs that come from Japan with stock intake tubing will have oil in them.

Quote »Well, it happened to me, I was getting oil spitted out of the bov, turbo was full of oil from the intake side and exhaust side, (I thought my brand new t28 turbo blew), then I rerouted the valve cover line to a bottle (this line usually goes from the valve cover to after the afm), I never had oil spitting out of my BOV ever after, and the bottle got some oil in it, when ever I push the car.[/quote] This is exactly what I'm saying! It can only dump oil into your intake via the breather tube on the exhaust cam cover. If your getting oil through your intake manifold and out your throttle plate "Dude" your engine is soooooooo done.

He never told us how his breather tube is routed, so as of right now, we're all speculating, but neither of us is wrong. I know what blow-by is and these engines are notorious for it, but it doesn't mean that they're completely broken. Just keep going until it starts smoking or it starts spitting-up too much oil.

Dee

Post by **pulsar gtr** » Wed Jul 07, 2004 5:59 pm

boost_boy wrote:these engines are notorious for it, but it doesn't mean that they're completely broken. Just keep going until it starts smoking or it starts spitting-up too much oil.

Dee

True to that, lol

Also true to that he hasn't told us how his breather is hooked up, I assumed that he got the factory routing on it, if he doesn't then yes, I have to agree, the turbo is blown. kiss it good bye.

Boost boy, any word on the forgies dude. thanks,

PULSAR GTR

Post by **boost_boy** » Wed Jul 07, 2004 5:59 pm

Quote »Boost boy, any word on the forgies dude.[/quote] Bro, forgive me for I completely forgot I was supposed to source those for you. Check with me tomorrow to see if I had taken car of it (Man I suck):D .

Dee

Post by **pulsar gtr** » Wed Jul 07, 2004 5:59 pm

Thanks bud

RafiPULSAR GTR

Post by **Tweaktac** » Wed Jul 07, 2004 5:59 pm

hey everyone, Ok, i have read through all of the great information and speculated ideas... I do have the breather from the valve cover hooked up back into the intake... I am going to go check that out and see if i am getting oil back into the intake...a buddy of mine told me to hook up a filter (like a fuel filter) between the valve cover breather and the intake... I will let you know when i take it apart... thanx everyone

Post by **Tweaktac** » Wed Jul 07, 2004 5:59 pm

hey there...alright i went to my buddies shop and pulled off some of the ic piping... the inlet piping and the tube between the valve cover and intake both had a little oil in it... and i checked the cold pipe right next to my throttle body and there was NO oil whatsoever... a couple of my other friends suggested that since I am running higher boost (15psi) on a t28 then the crankcase pressure is much higher and pushing more oil through my pvc valve and back through the intake and ic piping...I also checked the play on the turbo and there was NONE, the thing is rock solid and spins perfectly...I think I may just try an oil catch can and see how that goes... any suggestions on a good oil catch can? thanx for taking the time to reply and through out the ideas!

Post by **float_6969** » Wed Jul 07, 2004 5:59 pm

Glad we could help. It still sounds to me like your rings are STARTING to go bad, but I don't think they're bad enough to worry about right now. Mine got to the point that I could fill a 1Q catch can in about a week or two of normal driving. Every time I came onto boost, it would blow the dipstick out. They were seriously toasted. But I'm fixing it now. As for the catchcan. Find the cheapest one that you like the looks of. Catch cans are a really simple device so it's not like you can get screwed if you get a cheap one. Mine was givin to me when I bought my intercooler piping and it works great.

turbo blues, any ideas

turbo blues, any ideas

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