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
 

...

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

Re: turbo question
 

Journal bearing should not need restrictors if oil pressure is in the normal range and if the turbo is properly built. I know that for a fact because I talked to the head guy at PTE themselves and he said. Now a BB turbo will and I got a restrictor for my pte BB turbo from PTE. The guy at Precision said that their journal bearing turbos like alot of oil since they are not water cooled. 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.

I copied this from another thread it was posted by 95talonracer

so given the fact that i'm in on the low side of what would be considered the normal range I don't really for see oil pressure being the problem

Re: turbo question
 

ok i sent you a pm, told you to call me. still havent heard anything so im guessing you dont want me to fix it?

Re: turbo question
 

it's alright I'll get it taken care of else where

Re: turbo question
 

just call me anyway!

Re: turbo question
 

Just want to add to this that the key part of the restrictor thing is where oil is being fed from. If its from the head, its less of an issue. If its from the oil filter housing, its more of an issue. Different cars, different oils, different pressures.

I love stock or stock frame turbos, none of this nonsense :)

Re: turbo question
 

This is because the restrictor is built right into the feed at the turbo.

Garrett center sections are meant to be universal, so its up to you to control flow to the turbo.

Re: turbo question
 

I have to get going to wor. if you'll be at the dyno day we can chat tomorrow.

I completely agree with what you said on that one but my other turbos have been fine. and I just got off the phone with pte and explained my whole setup and the guy said I shouldn't need a restrictor and actually recommened against using one for an scm61

Re: turbo question
 

In/out play or up/down?

Re: turbo question
 

ok, i will see you saturday. i kind of wanted to have it rebuilt and fixed for you by dyno day!

Re: turbo question
 

both

it's ok. I appreciate you offering it but I just don't have the time to pull the thing again tonight.

Re: turbo question
 

Well I dont think ill buy a Pte turbo ever, that guy doenst know what hes talkin about.

If you were to calculate flow and compare it to how much flow a 14b receives that is already restricted (which is a journal bearing too btw), you would find you are flowing about 10.33 times more oil with a 4AN line feeding your turbo than a 14b would receive. Do you really think that center section can handle that much oil?

Re: turbo question
 

you're right the company that manufactured the turbo doesn't know what they are talking about when it comes to their product

Re: turbo question
 

They didn't manufacture the center section. Its a Garrett center section like I said.

Look im only trying to help.

Re: turbo question
 

I know your trying to help and I appreciate that but either way I think they know their product good enough

Re: turbo question
 

alrighty no need to argue over something dumb like this. thanks for the help everyone!!!! I think i've got it figured out

Re: turbo question
 

I think PTE has much more knowlege then most of us on this board. They service guy is really nice and why the hell would he tell a customer that has one of their products to do something that is going to fuck up their turbo and make them (pte) look bad? I think not. I guarantee that if he were to buy that exact turbo new from PTE that there would be no issue with any oil leak or smoke anywhere! Im pretty sure PTE is a pretty good turbo given the number of people running them with good numbers to show for with no problem. You get what you pay for with turbos I guess. I have found this out the hard way as well. 4seasons69 I would just ask for your miney back or send it strait to PTE nad they will be very fair with you and dont even go to Diesel components. You might as well send it to the ones that make the dam thing if that makes since at all.

Ha ya that makes since.
PM me if you have any questions regarding your issue since I went through the exact same thing with my scm61 and delt with the service guy at PTE. Make sure that if you send in your turbo to them that it isnt a mutt turbo with a bunch of random parts thrown together and has ALL PTE parts on it or they may not treat you as nice.

Re: turbo question
 

well I figured I'd just throw this in here for the fun of it. I talked to pte, fp, bullseye power, and turbonetics and all of them said I should not need a restrictor in my journal bearing turbo and would recommend against using one. (i'm still waiting to hear back from blouch and I could find any good contact info to contact garret)

on another note julian tried to tell me that my bep v-trim didn't burn oil because there was a built in restrictor. when I called bep the guy said there is definitely no built in restrictor.

Re: turbo question
 

Which is what we've all been saying all along. Well, except for Julian... Ask Mark how his freshly rebuilt turbo is doing.

Re: turbo question
 

when you say mark are you talking about tkr?? julian rebuilt his turbo??

Re: turbo question
 

Yes, TKR Mark. Mark didn't make it to the dyno day because his car didn't even make it around the block without the turbo going bad. He must have forgot to put in a restrictor. http://mnscc.net/forum/images/smilies/icon_rolleyes.gif