Hi,
I found some oil on the cold side of my turbo, disconected the hose and some oil appear..
Can be the oil pressure causing this.?
I put a NOS .065 jet on the oil inlet to reduce pressure and seems to work, no more oil at least for this day.
2. What could happen if I don't have a BOV or any other presure release device.?
I connected directly my turbo from the housing to the throttle body and get smoky when I shift gears. Is this normal.? or my oil seal could be bad.?
If you dont have a BOV then you will have compressor surge...meaning the pressure from the wont be vented causing it to backup into the fins of the turbo as the TB plate closes. This will cause premature turbo failure, or worse, you could snap the shaft if here is alot of pressure. most likely,however, it will cause teh bearings to wear out quiker...my advice, get a BOV stat. Even a stock type DSM will work, anything to relieve the pressure. IDK, but this could be the cause of your oil problwm(smoking). Think about it, the pressure isn't released so it backs up on the fins and bearings and the oil pushes past the seals...like I said, IDK just a thought.
Failure is not failure if you learn from it
compressor surge = turbo about to go bye bye
I was a retard, and now I'm permanently banned.
Do you have your PCV system routed back into the intake before the turbo?
Cardomain|
Myspace
M I N I O N wrote:Do you have your PCV system routed back into the intake before the turbo?
I have a 2.4 LD9 so no PCV system at all. I just put a little filter on the hose coming from the air-oil separator in the block
My oil seal on my hot side was showing exessive sweating only 3 months old.... I installed a restrictor and it stopped smoking..... now that I wore in the turbo more the smoking is coming back...... I have a BOV..... so no worries..... I do see a little oil on my pressure side of the turbo.... but in the charge pipes........... and only a little tiny bit.... I'd say rebuild.....
I'm doing mine tomorrow.... just replacing the oil seal on the hot side.....
good luck... hopefully that answered your question ..........
Lee
JDM Civic Hatch
Status: Parting Out Turbo Kit....
14.224 @ 102.01MPH @ 5.5psi.... 2.3 60'
Next: Civic JDM B16a2 w/GSR LSD Turbo - Goal 300whp 1400lbs...
aren't the oil restrictors in place to keep oil pressure down? I'm going to use a pressure regulator.
Bill Hahn Jr. wrote:micotito, a small (trace) amount of oil in the intake system is not unusual, but 'smoking' from the exhaust, if in fact caused by the turbo (and not a damaged engine), would usually indicate excessive oil getting past the seals of the turbo, yes. Potential causes are many, and usually, the turbo seals themselves are the least suspect. But first, I'd like to ask a question:
I'm intriqued by what I see as a regular issue here...these 'oil restrictors'. Typically, restricting oil to the turbo should only be done in extreme circumstances. Can anyone shed any light on why I see this with so many enthusiasts here?
My guess is insufficient PCV systems. Excess crank case pressures not letting the oil return drain properly.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
^^^^^^^^exactly. Rig up some sort of catch can and plumb it back into the intake.
Cardomain|
Myspace
Bill Hahn JR.
Was wondering where you were going with your post here. I was waiting for a response but you never elaborated on your post. I am curious as to why you sorta questioned the use of oil restriction devices for the purpose of decreasing oil pressure to the turbo. From my experience the turbos "COULD" see a fairly significant pressure with our cars especially at start up or first 15-20 min of driving. 70+psi at times. From my understanding turbos do not like those pressures........................................However I believe that if your return is sufficient enough there really shouldn't be much pressure at the turbo at all due to basic principals of a lack of restriction. I can not say this for sure as I have never had an oil pressure gauge setup on my feed line to the turbo to monitor it. I do speculate that the pressure is fairly low but plenty of flow. I myself do not run one of these restrictors but I don't suppose they are a bad thing...........................IF and only IF they are not restricting to the point that the "FLOW" itself is diminished to a point of lack of lubrication within the turbo. Anyway I was wondering what your thoughts were on that seeing as you clearly question its use. Sorry to have jacked the thread sorta but this thread has been dead for some time now.
208whp 239wtq
13.7 @ 102mph 2.19 60'
^^^^^^^^ LOL sorry I accidently posted that under my brothers name
ASE Master Certified Automotive Technician
I stumbled apon the restrictors after cruising other turbo car sites........ club SI, some sr20/K24 site......
SPD RCR Z -
'02 Z24 420whp
SLO GOAT -
'04 GTO 305whp
W41 BOI -
'78 Buick Opel Isuzu W41 Swap
