turbo question
 

ok so I just got my car running with an scm61 that was supposed to be rebuilt and my car burned a good chunk of oil before the turbo swap. now my car is burning a lot more oil than before. like a half a quart in 150 miles. then today I pulled the intake and there is oil (more of a residue) on the turbo inlet and there is a good amount of side to side play and some in and out.

so my question is am I safe to assume the turbo is shot? and needs a legitimate rebuild? thanks for any input

Re: turbo question
 

Well smoking is usually these things: pcv valve, valve stem seals, turbo, too high of oil pressure and possibly a few more things. That is if you don't have any external leaks. So I would start with checking those things. Start with easiest/cheapest first.

Re: turbo question
 

heads practically brand new, if anything my car has low oil pressure, might be a little from the pcv.

the vast majority of my oil burning before I put this turbo in was from my rings. when you look in the cylinders through the spark plug holes all the tops of my pistons are wet.

but it's a ton worse since I put in this turbo

Re: turbo question
 

Have you done a compression test? Do you still have balance shafts? Did you have Julian rebuild this turbo? If so, bring it to him and have him check it over, He's great about that kind of stuff.

I would start with checking your PCV and then do a compression test.

Re: turbo question
 

last time I did a compression test it was 130 across the board but compression has nothing to do with your oil control ring. I might try a new pcv valve just to see if that makes a difference.

julian did rebuild it but with his track record I really don't feel like dicking around with that I'll prolly just take it to diesel components in burnsville and have them do it so I don't have to worry about it taking a shit in 120 miles again

Re: turbo question
 

I would definitely check it over, or bring it back and have it rebuilt again.

Re: turbo question
 

yeah prolly going to just bring it to diesel components when I can come up with the money to have them do it

Re: turbo question
 

Who rebuilt it the first time? I'd ask whomever you got it from to cover at least part of the bill @ the rebuild shop.

Re: turbo question
 

julian (jhaan dude) rebuilt it the first time but I haven't contacted him yet so we'll see

Re: turbo question
 

i sent you a pm. do you have a restrictor on it? if not its just gonna blow massive oil pressure against the exhaust seal ring and dump it out the exhaust.

give me a call and i can take it apart and give it a once over for ya for free. if you need a restrictor i have one here...

Re: turbo question
 

Why does it need a restrictor? Where are you getting oil pressure from and also is it ball bearing or journal? If it is getting oil pressure from the stock turbo oil feed location and is a journal bearing turbo then it should not need a restrictor if the turbo was correctly rebuilt.

Re: turbo question
 

4seasons69 just send it in to Precision and have it done right and correct the first time. They are great guys and are willing to explain things and work with you there.

Re: turbo question
 

I'm getting the oil from the oil filter housing but it's a journal bearing turbo so it shouldn't need a restrictor. my last turbo was a journal bearing turbo and I ran the oil feed the same way and it didn't burn a lick of oil.

Thanks for the offer but I'm either going to send it to precision or bring it to diesel components in burnsville

Re: turbo question
 

It also depends on if you have your balance shaft removed or not also. If you do, you are making way more oil pressure at the OFH than stock. It also depends on what you are using for a feed line, if it's something like a -4, then you're most likely getting too much oil pressure to the turbo and need a restrictor. I don't even know where the stock feed location is on these cars, mine came with a -3 (I think, it's the same size as a nitrous line) from the oil filter housing, it's the one from slowboy that's like a mile long. I say this because I am debating what to do with my car so the same thing doesn't happen to me.

Re: turbo question
 

Are you balance shafts eliminated? I see up towards 120psi of oil pressure when cold. I use an FP journal bearing restrictor/filter from the OFH for my Journal bearing Holset HX40. I have had no issues.

Re: turbo question
 

I just went through all of this.....

If its a T3 center section then run between a .09 to a .110 restrictor. Without it, with the feed at the oil filter housing, regardless if you have balance shafts or not, is flowing way too much to the turbo and you are flooding it.

I messaged a bunch of Garrett representatives and the guys that made the most sense said to run a .09 to a .110 restrictor. Bear in mind though that this is with me telling them my oil pressure source is between 20 psi and 80 psi. May change a bit in your situation.

Re: turbo question
 

I haven't removed my balance shafts yet so that shouldn't be the problem.

I've always been told that on journal bearing turbos you don't need a restrictor. 95talonracer said he talked to pte and they said that with their journal bearing turbos you don't need to run a restrictor. and on my old bullseye vtrim that didn't burn a lick of oil running the same oil feed

plus there is a bunch of shaft play. which shouldn't be there on a freshly rebuilt turbo with only 120 miles on it

oh and for the whole oil pressure issue the last time I checked it I only had like 14psi at idle so i'm on the low side

Re: turbo question
 

Well you probably do need a restrictor. How big of an oil drain do you have. Im running a 12 AN drain and i still think im cutting it close.

Re: turbo question
 

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Re: turbo question
 

[quote=blackrosenova400;308094]Well you probably do need a restrictor. How big of an oil drain do you have. Im running a 12 AN drain and i still think im cutting it close.[/quot

it's a 10an return line if I remember correctly. like I said my bullseye was fine on this oil feed and return setup. and I've only heard about having to run restrictors with bb turbos or if you've had your balance shafts removed.

given the amount of shaft play it already has I highly doubt a restrictor would do anything at this point