Jump to content
SAU Community

Blocked Catchcan Vent Killed My 32...

partyboy73

By partyboy73,
in Engines & Forced Induction

 Share

Recommended Posts

partyboy73 Rising Star

partyboy73

Posted
Posted

Well as the title states my catchcan vent blocked and the 32 started spewing white smoke... I get about 2 psi of boost and I'm wondering if the pressure has blown out my turbo seal...? If anyone could shed some light on this for me so I know where I'm at I'd be very appreciative.

Link to comment
https://www.sau.com.au/forums/topic/359985-blocked-catchcan-vent-killed-my-32/
Share on other sites
StealthX Veteran

StealthX

Posted
Posted

???

How could a blocked catch can put pressure on the turbo's bearings?

The white smoke would be oil spewing back into the intake from the catch can... There's no way the bearings would "blow" from this...

The Dan Grand Master

The Dan

Posted
Posted

???

How could a blocked catch can put pressure on the turbo's bearings?

The white smoke would be oil spewing back into the intake from the catch can... There's no way the bearings would "blow" from this...

Not entirely true.

Increased pressure in the crankcase will prevent oil returning from the turbo. However it is more likely you will see the smoke as a result of it in your intake first.

partyboy73 Rising Star

partyboy73

Posted
  • Author
Posted

The can wasn't plumbed back into the intake... also I noticed, under the bonnet, oil dripping on my plastic sump guard from the turbz area... I hav'nt looked at anything yet but was also wondering if this would've done something to the engine? only drove a few hundred meters when I noticed the smoke

NSNPWR Rising Star

NSNPWR

Posted
Posted

Have seen first hand what excessive crank case pressure can do to turbos, which is what you would have had with blocked breathers...as was mentioned above, oil in the turbo cant return to the sump and builds in the turbo core, it then pushes past the exhaust seal, in my case, the exhaust seal was shagged or had moved according to turbo builder and I had sh1t loads of white smoke, like you...

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

have you fixed the catch can?

take the dump pipe off the turbo and see if there is an evident oil leak from the seal. and same on the front, if you cant see any oil there, put the intake back onto the front and start the car to see if smoke starts pouring from the turbo exhaust, if it does turn the car off and see if you can see oil in the exhaust of the turbo.

let us know how you go

NSNPWR Rising Star

NSNPWR

Posted
Posted (edited)

Yep, exhaust wheel will look 'wet' and you probably wont see this until the turbos off but oil will be weeping down the bottom of the front side of the exhaust housing, let us know how you go...mine wasn't caused by blocked breathers but excessive piston to bore clearance...same result - excessive crankcase pressure and a turbo that couldn't drain..

Edited by NSNPWR
  • 3 months later...
partyboy73 Rising Star

partyboy73

Posted
  • Author
Posted

Well... new turbo ( already had ) and all exhaust and ceramic coating etc and still getting slight smoke out back from oil... maybe valve seals blown out..?? any help would be appreciated, dying here... pinch.gif

tricstar Mentor

tricstar

Posted
Posted

yeah I had some smoke after installing new turbo and ceramic coated dump etc went away after a few heat cycles, I assumed it was just burning off shit from new turbo and new coatings..

another time needed to put a restrictor in the oil feed of the turbo, because with Jun pump was pumping too much oil and pushing past the seal, hence blowing white smoke..

hopefully just one of those reasons for you :thumbsup:

Rolls Grand Master

Rolls

Posted
Posted

???

How could a blocked catch can put pressure on the turbo's bearings?

The white smoke would be oil spewing back into the intake from the catch can... There's no way the bearings would "blow" from this...

If you seal the crank case gases in it will pressurise and can burn lots of oil, I've seen it happen before. Don't see how it would do anything to the turbo though.

partyboy73 Rising Star

partyboy73

Posted
  • Author
Posted (edited)

I found oil in the mouth of the compressor side when I was putting a boost controller in and had to remove stuff to get to the actuator... hoping its from it sitting around for so long..?? stretching maybe but dont want to think I have to pull it all off again... also I have taken it for a couple runs before that and it was showing white at the end of the runs and a hint of blue due to not being mapped..

Edited by partyboy73

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • timmy94
      boost source Size Garrett gt28 gen2

      By timmy94 · Posted

      Impossible to remove the housing while turbo is installed on the manifold on the engine. So I have to do it anyways. I plugged it so there will not be any debris in there. Will vacuum aswell 
    • JC71
      gtr hood match gt/gtt front fenders?

      By JC71 · Posted

      would a r34 gtr hood line up with gt/gtt stock fenders? after latch, front bumper and hinges are swapped for gtr ones? or would the fenders be too low or high in relation to the hood surface? ( I believe seeing somewhere that gtr front fenders use some type of riser for the sides, but do not know how that relates to stock gt/gtt fenders.)    
    • TurboTapin
      boost source Size Garrett gt28 gen2

      By TurboTapin · Posted

      You just need to remove the compressor housing, not the entire turbo. I would not be drilling and tapping anything with the housing still on anyways. 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      So, I put my boat on a boat. First of all, I'm going to come out and say it. Why is Tasmania not considered a holy goal, an apex that all road-legal modified cars go to, to experience? This place is an absolute wonderland of titanic proportions. If people are already getting club runs for once in a lifetime 30 person cruises to Tassy then I've never seemed to see it. It is like someone replaced the entire place with an idyllic wonderland for cars, and all of the people living there with paid actors who are kind, humble, and friendly. Dear god. After doing a lap of almost all of the place I've found that it's a great way to find out all of the little things that the car isn't doing quite right and a great way to figure it all out. All in all, I drove for 4 hours a day for a week and nothing broke. I didn't even need to open the engine bay. This is by all means a great success, but it has left me with a list of things to potentially address. I also now have a 3D printed wheel fitment tool which annoyingly hasn't got any threads in it to actually assemble it. I might be able to tape it together to check the sizing I actually want to use, but it'll likely involving pulling the shocks out to properly measure travel at least at the front, and probably raise the car while I'm at it, at least in the rear. I scraped on quite a few things and I'm not sure how else to go about it. I was taking anything with a bump at what felt like 89 degree angles. And address those 10 other tasks. And wash the car. God damn it is dirty. And somehow, the weather was perfect the entire time - And because I was on the top of Mt Wellington it turns out it was very much about to freeze up there. I did something I typically never do and took some photos up there in what must have been -10 and the foggy felt like suspended ice, rather than mere fog. If you own a car in Australia, you owe it to yourself to do it.
    • QB6SAGR
      Battle of the broken skylines

      By QB6SAGR · Posted

      Damn that was hilarious, and a bit embarrassing for skylines in general 😂 vintage car life ey. That R33 really stomped. Pretty entertaining stuff
×
×
  • Create New...