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Oil Leaking Past Seals In New Turbo? R32 Gtr -5's

trustr32

By trustr32,
in Engines & Forced Induction

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trustr32 Rising Star

trustr32

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Alright lads It's almost the last straw I Have finally got my GTR running after a long rebuild and have it booked in to get a run in tune on friday. It's a forged engine with everything new and new Garrett -5 turbo's. I got it warmed up and the cooling system bled today but there was alot of oil smoke coming out of the exhaust. Before I pulled the engine out there was a shitload of oil going through the motor so the exhaust was full of oil and I didn't clean it out so I decided to pull it off tonight and do just that. When I pulled the Y-pipe off I noticed that the inside of the front dump pipe was coated witrh fresh gold oil but the rear one was as dry as burnt toast. What have I missed or could there be something wrong with the seals in the front turbo. The engine has run for 10 minutes in total absolutely tops and the rev's havent been past 2000rpm. I have a trust oil pump so could it be that there is excessive oil pressure to the turbo's? I didn't put any restrictors in the feed lines as I was assured that the turbo's had them already fitted and my Oil pressure gauge has died so I can't tell anyone what the oil pressure is reading but there's definately oil pressure as all the oil feed's and drains and my oil cooler were warm after running it so it is circulating. Any idea's would be a great help I have contacted the guy I bought them off but I'm waiting for a reply to let him know just incase there is something wrong with the turbo but it's looking like I'm gonna have to cancel the tuning now which has really pissed me off. Anyway any help appreciated.

trustr32 Rising Star

trustr32

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Engine was tired breathing really heavy and dumping alot of oil into the intakes. Before I pulled the engine out I pulled the intake pipes off and the turbo's were both about half full of oil. Yeah I cleaned the cooler out completely all new custom cooler piping and intakes. I bought an aftermarket gauge the other day but it doesn't have a sensor with it so I'm still trying to sort that out at the moment. I've been searching on here for the last hour and everyone says that the 2860 range from garret have restrictors from factory but a few guys have said they ran a 0.8mm banjo bolt on theirs just wondering if this could be the problem? I would of thought that it mouldn't have become apparent this early though as I havent even had the revs past 2k. The trust pump has it's operating pressure stated as

800rpm=100kpa

2000rpm=300kpa

6000rpm=400kpa

That means it's not even seen more that 45psi oil pressure. It looks as though it had only just started to leak too as it had only dribbled about 3inches into the y-pipe.

trustr32 Rising Star

trustr32

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did you put in a restrictor in the block ?

Which restrictor is that? Not the one's in the head? I haven't put any restrictors anywhere the shop that did the build did all the usual oil mod's larger galleries, head restrictors, external drain etc. Is there supposed to be one where the feeds come out of the block for the turbo's?

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