Ive got every thing in place now but im not running boost yet as the injectors i got off ebay have failed so im waiting for some more but the thing is that if i rev it on the spot i get a puff of blue smoke. The car has had new rings and valve seals and was fine before the turbo went on. This morning a friend was behind me and he said it smoked when i reved it but not whilst i was accelerating. any ideas what it could be. I was thinking the oil return but its nearly vertical (will try and post a pic later). Could it be to much oil getting to the turbo? The oil feed has about a 4mm bore and is tapped off from the sendor.

B16a1 with stock internals
T3 super 60 turbo (internal wastegate)
S-AFC hack when injectors come.

 

are you sure it is oil smoke? what color is it?

is the turbo brand new? or newly rebuilt?

what is the oil pressure when it is smoking?

is the return line too far down in the oil pan (where it is past the line where the oil sits? that could back up an oil return line even if it is "almost vertical"

 

If it smokes when you rev it but not when you accelerate then there is a chance, that if there is any problem at all, that your valve stem seals or valves themseleves are leaking.

Matt

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bambooseven &raquo;</TD></TR><TR><TD CLASS="quote">are you sure it is oil smoke? what color is it?</TD></TR></TABLE>

yea...are you sure its oil? do u have a cat? could be running rich...
is ur return bigger than ur feed line?

 

its definately oil smoke. im not sure on the pressure as ive not fitted the gauge yet and with regards to the oil return its about half inch diamiter. i will try to take a picture tomorrow and post it.
Im pretty sure it is to do with the turbo and not the engine as its had new rings and valve seals within the last 2k and was fine before i put the turbo on. The turbo its self is meant to be new but could be a very good recon as i bought it off ebay What is a good size restricter to fit to the oil line? mine is pretty big!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bambooseven &raquo;</TD></TR><TR><TD CLASS="quote">is the return line too far down in the oil pan (where it is past the line where the oil sits? that could back up an oil return line even if it is "almost vertical"</TD></TR></TABLE>

 

Im pretty sure it is ok but i will post a pick up for you guy to have a look at later. the current size bore for the oil inlet is 0.16". Does that sound big? the return is about 0.5" bore

 

that sounds about fine...
seals ok on the turbo?

 

They should be, its a new turbo. it does not smoke at idle which it would if the seals had gone right? was just thinking that i might be flooding it with to much oil as ive seen some where that for a T3 you want about an 1/8 (0.125) feed to it so mine is a bit big.

 

I use a -4 line for my feed line (as do most people AFAIK) you might want to try a needle valve, but I reccomend you get your oil pressure guage up and running first and adjust from there.

 

Ok, what does that do? and how do i set it up? What size bore is -4? sorry but its sized differently to here in the uk.

 

First of all, DO NOT use -4an feed line, it is too big. Go with -3an for a feed line. Or atleast buy a restrictor before your seals take a ****.

Try pulling your return from the pan after the car has sat over night, if oil comes pouring out of the fitting, it is too low in the pan or you are over filled on oil and its not draining from the turbo.

When I do oil changes,
1.I pull the return from pan, then I fill the oil until it dribbles from the fitting.
2.Then check your oil level, MAKE SURE it good on the dipstick.
3.If it reads good, connect the return back to the pan and start the car.
4.If it reads too low, you welded your fitting too low.

 

Ok sounds good. What size in inches or millimeters is -3an?

 

Honestly, I have no idea.

Can anybody help this guy out?????

 

Yeah come on guy help! i dont want to blow my turbo.

 

How do i get a picture on? ive got one of my oil return

 

 

Right ive taken the charge pipe off and there is no oil in there. its completly dry and oil free. or
I know it good but what could it be?

 

bump

 

bump

 

any signs of oil in the downpipe?

 

-3AN is 3/16in... rule of thumb, take the -AN number and put it over 16 to find the size i.e. -4AN = 4/16 = 1/4, -6AN = 6/16 = 3/8 etc...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crispydee &raquo;</TD></TR><TR><TD CLASS="quote">its definately oil smoke. im not sure on the pressure as ive not fitted the gauge yet and with regards to the oil return its about half inch diamiter. i will try to take a picture tomorrow and post it.
Im pretty sure it is to do with the turbo and not the engine as its had new rings and valve seals within the last 2k and was fine before i put the turbo on. The turbo its self is meant to be new but could be a very good recon as i bought it off ebay What is a good size restricter to fit to the oil line? mine is pretty big!
</TD></TR></TABLE>

Are you sure it's not rich smoke? Just because your car runs stoich when you were Naturally Aspirated doesn't mean your car won't run rich when you're in boost. What engine management do you have? Is your car properly tuned? Do you have an wideband O2 to monitor the A/F?

The next question is, are you boosting your valvecover breather? If it's pressurized, then it can cause your motor to burn oil when you're boosting.

I personally think -4AN oil feed is too big. Try to run a smaller oil feed line like -3AN or an oil restrictor fitting if you can. How big is your oil return line from the turbo? Although the slope of the drain line may look fine, but if your drain line isn't big enough to evacuate the oil, then the oil will start to build (especially at high rpm high oil pressure situation) and the oil will back up to the turbo.

 

Right i think i may have found the cause. i took the return line of the sump and about a litre of oil came out of the sump pipe so it must have been backing up. ive put a different sump on as the one i was using had a dent in so that may of affected the levels a bit. The return pipe is now as high as it could be. It has had to be welded on the inside becuse its that close to the flange. Ive not touched the feed line yet because i dont want to restrict the flow if this was the cause. Thanks For the help.

 

Its really bad now. Think the seals have gone. I relocated the return so it was as high as it could be and restricted the feed line to 3an but its still smoking. If you go out in it and really give it some you can see a bit of smoke but when you stop it carries on smoking a lot worse. If you drive it steady the smoke goes.