Jump to content
SAU Community

Recommended Posts

  • Replies 52
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

you should leave the inlet manifold one hooked up. (pcv valve)

the turbo side should have the big one from the rocker cover going to it and thats it. simply block the suction pipe hole and leave the little filter on the can.

The T Piece runs to one of the inlets on the catch can. It used ot have two lines to it but then i couldn't have a breather (as the catch can didnt have one built in) so we used the 2nd inlet on the catch can and stuck a breather on that, but i am thinking that doesnt work... lol

Car only blows alot of smoke when you have put ur foot down into boost, on idle its very minimal

Some smoke comes out the rocker covers but when the catch can system is disconnected the car blows alot less smoke out of the exhaust system...

Im off to buy a decent catch can and see if that helps peeps!

Otherwise i think theres somethin else wrong aswell... maybe an oil drain/inlet problem?

I'd have to agree with the rest, That line off to the catch can is probably too restrictive and is causing the crank case to pressurise, when the crank case is pressurised the oil drain backs up and pushes oil out the turbo seals. happened to me when i had a retard attack and tried to use a hose and very restrictive brass air filter for my vent and had the same thing happen with my brand new garrett turbo. :(

Ive disconnected one of the lines that runs to the T piece and then to the catch can and the car seems to blow very little smoke now, still abit but about 90% less!

So obviously i need a better catch can set up and ill check the drain lines etc anyway on monday. I should be able to keep off a defect now tho :(

you basicly need to hook it up so ideally you would have large catch can with 3 fittings or 2 fittings and a vent.

two fittings for both rocker cover hoses.(the big ones)(plug the pcv valve)

and the thrid to atmosphere or back into the suction pipe :(

I will sent two hoses to the catch can and have the breather ontop of the catch can :(

Im still getting a tiny bit of smoke but im sure after the lines are looked at and the tuning plcae get it we can sort that out!

Thanks for the help so far peeps.

I don't understand how restrive lines or bad catch can - can cause that much white smoke -

I'm not saying this wasn't the case - just trying to understand the physics behind it - As I had a similar problem with my old car.

In my case the air intake route was blocked off, so all the bad oils etc have nowhere to go except to the catch can from the head. If the lines are too small or there is a problem with the breather then pressure can build up and force oil out in my case through the turbo's oil seal i believe?

The system needs to be able to expell the gas's and extra oils that build up in the combustion process basically...

In my case the air intake route was blocked off, so all the bad oils etc have nowhere to go except to the catch can from the head. If the lines are too small or there is a problem with the breather then pressure can build up and force oil out in my case through the turbo's oil seal i believe?

The system needs to be able to expell the gas's and extra oils that build up in the combustion process basically...

have you taken one of your intercooler pipes of to see if your intercooler is full of oil?

The intercooler had a slight build up of oil but nothing outta the ordinary. The wierd thing was oil got into the boost controllers actuator line! That messed with my controller but i let it out and pulled a line off the block and it runs fine now, i have to keep it like that until i get the new catch can next week because if i hook it back up it'll cause the oil problem again! As it is its not too bad at all.

Ok i replaced the catch can with a better set up, two lines running to it and it has a built in breather and i still get oil smoke....

Next up i will have the turbo oil line looked at to see if it has a restrictor on it otherwise check the line to the sump isnt blocked.

If its not that then i guess its the turbo oil seal??? :D

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Put a fuel pressure gauge on it. Replace the turbos. Probably completely separate issues.
    • What copper washer do you guys use on the bleeder bolts? The existing one I have I had no idea where to find it in a local store, I did buy some online but that are only 1mm thick whereas my old one is 2mm+ thick and when I put the new washer out and squeeze the top radiator hose I can hear a bit of air but not with the old one. Does this matter? The new one doesn't leak, but the inner diameter is a bit loose whereas the old one threads on the bolt.
    • Howdy all, after being out a few weeks ago on a spirited drive in my GTR I have 2 issues that oddly have appeared at the same time. Whilst accelerating quickly through the gears all of a sudden i’ve lost power at the top of third gear (below redline around 6000rpm) for no obvious reason.    From that point onwards the car has been running rich on idle, won’t really rev under load without a ton of black smoke and the odd backfire, and dying as a pull up to a set of lights unless I keep the revs up around 1500rpm. In addition when shutting down the car that same night (I was 10 minutes from home) I noticed one of the turbos was significantly noisy on wind down when shutting off the engine. After letting the car cool down overnight it starts up fine, although once it gets to temp the revs start to creep up and down, the exhaust is darker than it should be and it also sounds like it’s running rich (fat note) I’ve put a new set of plugs in it - no change, the old plugs all seemed OK with two of them being somewhat richer/fueled up than the other 3 with 1 being borderline. I’ve smoked tested the intake system via the front of the Turbos, found a split vacuum hose going to the factory boost gauge sender, which I have since replaced.  Also found another leak on the gasket coming off the rear turbo outlet, have also replaced this. After fixing both of these leaks - still have the running rich issue. I’ve also tried another pair of AFM’s - no change here After pulling off the front turbo intake pipes, there is obvious shaft play in the front turbo, which now hisses loudly on light revvs although I can’t see why this would make the car run funny even under idle. I’m curious to know why it’s running rich before I potentially replace/rebuild turbos. The car is completely stock <50,000kms  other than an exhaust. Oil and coolant are all clear. I haven’t bothered with coil packs as it looks like they won’t be the issue due to condition of the plugs. Any help appreciated as I cry myself to sleep!
    • No probs at all. I used to love trying to dig up obscure info for those in need where possible going back 20+ years on SAU.  I did have another look and couldn't come up with any closer match. I'm leaning towards those skirts in your first pic are custom fitments, cut down/extended or from another car entirely and modded to fit an R34 sedan. I would've thought someone in Japan had them and taken a photo at some stage over the last 2 decades but there's nothing. Someone out there must know surely.
×
×
  • Create New...