h23vtec_dc2

iTrader: (1)

okay so I just did a fully rebuilt oem mini me w/ a z6 head and d15b1 block. I decided to go with the z6 oil pump, oil pick up, and the oil pan. At first I noticed that the z6 oil pan is more shallow than the d15 but figured id be okay since im using the z6 pick up. motor is broken in and slapped on the turbo kit and we're getting blowback oil coming through the exhaust side of the turbo. was thinkin it was the seal at first, took the turbo apart checked it out and also brought it to a shop to double check and it looked perfect. noticed that we didn't have a breather on the oil catch and everyone else was saying that is the problem. put a breather on and it really helped. after a min or two driving, you can see a little bit of oil coming out of the downpipe and turbo right there.

oil dump is -10 an and has a nice smooth flow, as I also double checked to see if it was clogged or what not (you never know). question is, can blowback oil coming out of the hot side turbine coming from the oil dump line due to the pan? trying to see if I need to switch it to d15 pick up and pan? or is my problem elsewhere?

turbomaniac

do you see white oil burned smoke from your exhaust?


what is turbo oil damp diameter?

is the turbo oil damp higher then the level of oil at oil pan, or is it too low?

h23vtec_dc2

iTrader: (1)

thing is, we were about to drive the car to a shop to get custom downpipe and intercooler made. but apparently we didn't even make it past 3 blocks. it was smoking huge clouds of blue smoke. did you mean oil dump diameter? its a -10an line. thing is, it was a used kit and I saw it run in the guys car. so whatever setup he had, it looked fine. and when I took the oil dump line off, I stuck a huge flat inside just to see if it can touch oil, but it didn't. the dump bung was put as high as I can get it. maybe low oil can cause this too?

turbomaniac

no, low oil cant cause a problem to the oil dump

if oil dump is ok an as high as possible, mabe problem cams from your turbo..


a vision check cant show if there is a proplem to your turbo you have to send it to an expert that repairs turbos and has a balancing machine.

NotARaCist

iTrader: (1)

What turbo are you using? Do you have a restrictor in the feed line? Post a picture of how the return line is routed.

h23vtec_dc2

iTrader: (1)

its just a cheap sport jdm t3t4 turbo. but like I said, I saw it run and drive before he pulled it.

here are pictures of the dump line. the top fitting part has to run that way to clear the manifold then it comes back around and to the pan. has a nice flow curve to it.



so the oil pan differences between d15 and d16z6 wont make a difference? and what do you mean by problem cams?

yes I have an oil restrictor.

TomCat39

I believe that was a typo and meant "problem comes from the turbo"

b20c

Why did you swap the oil pan and pick up to z6? Cuz it was already tapped for the return line? Tap the 1.5 pan and put it back on, and the 1.5 pickup. That pickup and stuff wasn't designed for 1.5 and could be causing your issue. Start there. And did you pull the oil jet out of the bottom end? The one on the intake side near the middle headbolt? You need to or it will smoke like hell, I've done many minime motors back in the day and left the oil jet in once just to see what would happen and it smoked like hell. Replace your pvc and oil pan. U did catch can right? that should help a lot. Do all that, then if that doesn't fix it, star looking at the turbo as the culprit.

NotARaCist

iTrader: (1)

You have a cheap, knockoff turbo. One of your oil seals is bad. It's that simple.

turbomaniac

i understand nothing from the pics...

NotARaCist

iTrader: (1)

The pictures are there to show the routing of the return line, which looks fine. The entry angle into the pan isn't ideal, but it's acceptable.

grumblemarc

iTrader: (4)

Um what? That's scary if you have a boosted car and you don't know what you're looking at.

Get a restrictor on that oil feed line.

turbomaniac

mabe is just me but it is impossible to understand were the oil dump's end is placed and if it is totaly vertical

NotARaCist

iTrader: (1)

I really hope no one's lives rely on your spatial awareness, because you have none.

turbomaniac

my spatial awareness is flawless lol

NotARaCist

iTrader: (1)

And yet you can't tell the directionality of a single hose after two pictures of it. You're kinda like that kid who graduates highschool thinking he's awesome at math, goes into an engineering program, and then reality smacks him in the face. OP's turbo is trash. It's not a drain line problem, it's a $50 turbo problem.

turbomaniac

we cant exclude the restrictor also...

IMO he has to check if the restrictor has proper dia and than do the CHRA kit

h23vtec_dc2

iTrader: (1)

Don't go on here much. But let me answer everyone's question best thati can. This isn't the first boosted car I've turbod but it is the first mini me.

Yes the oil plug on the block was taken out for vtec solenoid.

There's an oil restricter on the oil feed line

It's not the turbo seals, but we well be rebuilding it with a Garrett kit. Btw, where dou guys recommend for garrett rebuild kits? They have garretts on eBay but are those real? The gaskets look cheap.

And yes, the pictures were to see if the oil drain line looked like it flowed.

Problem solved was, there was no breather for the catch can. So it had blow back. Which caused it to come back to the turbo. Car runs, no smoke. Thank you so much for the ones that actually cared

turbomaniac

yeah, we werent very helpfull.

but than again no breather at the catch can is a non common mistake.

happy that you fixed it...

grumblemarc

iTrader: (4)

So you aren't unfamiliar with turbo setups, but you are with catch cans?

turbomaniac

no i just believed that there wasnt a catch can without a breather

grumblemarc

iTrader: (4)

No no no. I was talking to the OP.

turbomaniac

h23vtec_dc2

iTrader: (1)

it was ebay catch crap. they don't have breathers for some odd reason.

grumblemarc

iTrader: (4)

And you bought one? Hmm. Lesson learned.