I am curious....for those that are/were having the smoking issues with the oil drains...how many of them were installed with the motor in the car and how many were installed with the motor being pulled??

 

Mine smokes a little. The turbos were installed with the motor out. I don't notice it while driving, but when I am stopped and I have someone else rev the car, I notice it.

Chris

 

+ 1

 

Are you sure that's not just raw fuel?? I'm pretty sure the oil smoking problem on the APS kits is only on in gear decel.

 

So does that mean... We as owners of the APS TT should not down shift into a corner or to a stop?

 

I take it your laughing at me. So, EARTH TO @SSHAT, I NEVER SAID THAT YOU SHOULDN'T DOWNSHIFT IN YOUR CAR. I was simply trying to give a reason as to why this guy would get smoke upon free revving of the car and not while driving.

 

I had problems with smoke during decel as well. My installer trimmed a hose by 1/4 inch and the car doesnt smoke anymore!

 

is this an issue with the oil pan itself or the whole kit?

 

Neither.

A majority of APS kits don't have this issue. I have two different theories on the ones that do. The APS oil return trim works for most of the cars that have the issue, but a select few still have smoking issues after the oil return fix. I'm guessing that those select few's turbo(s) have faulty seals...but it's something that's really hard to prove without pulling the turbos off the car and putting different ones on.

 

Not true. Us "smokers" get the smoke during the fall of RPMS. Be it in gear or a stand still rev

 

ok so either way...my theory of either the oil return or a bad turbo seal still stands...

 

So far no smoking on my setup. I know the tuner trimmed quite a bit off of the oil return lines.

 

while the car is in gear decel the ecu cuts fuel (over a certain rpm like 1500) to let the internal engine temp decrease. So if anykind of smoke is comin while car is in decel thats either oil or coolant.

 

I know that...but he said he was free revving the car when it was smoking and didn't specify smoking on accel or decel while free revving.

 

a guy on the forum here, brucekgt, has the aps tt and built motor. he came to my shop to show me the car and go for a ride. it seemed to only smoke on decel. i know for sure it was the smell of oil and nothing else. if i am remembering correctly, we were just cruising along at a low rpm pace when we stopped and some smoke came out. meaning the turbos were not spooled even, and oil pressure was not high. i am curious what is causing this also. i didn't get a chance to see how the turbos are set up or the height compared to the oil level in the motor though.
is the egr system routed before the turbo in the intake system like it should be? are the internal wastegates controled by only springs or both manifold pressure and springs? is the crankcase somehow becoming pressureized on decel? does it do it during warm up periods the same when oil is higher viscosity or more during operating temps? the answers to these questions will eliminate different possibilities and narrow the problem down.

 

How is it possible that the turbos are not spooled evenly?

Honestly, that make no sense at all.

James

 

come on, you know what i mean. not deceling after high boost, just normal driving.

 

just trying to trouble shoot problems people are having with your kit

 

I can eliminate 2 things for ya. For one, the Z doesn't have an EGR system, so that's a non issue. Two, the wastegates are MP and spring controlled. Hope this helps a little.

 

Mine wouldn't smoke until it got up to operating temps. After it warmed up, no matter how easy I drove it, blue/white smoke would blow past my windows when I stopped.