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Discussion Starter #1
So I seem to have a puff of smoke coming out the exhaust when I rev the engine a couple of times.

I also noticed it yesterday when I stopped at a roundabout, the wind blew a bit past the window.

I couldn't really tell the colour of it, it looks more grey than anything. The car still boosts well.

I have checked the oil and it doesn't look like its burnt any and the water levels are fine and no mayonnaise in the oil.

The only thing i can think is that there is oil getting past the seals on my turbo which is brand new Precision Turbo 6266 CEA Dual Ball bearing.

Before fitting I asked them if I needed a restrictor on the turbo and they said no. I asked again after this happened and they said it can take up to 85psi which is about 5bar but 'could' take more. Well my engine runs at 7bar on full boost so that's quite a bit more i would think?

The turbo has about 500ish miles on it, if I fit a restrictor now, will I be lucky and I should be OK? Or will the damage already have been done?
 

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Discussion Starter #5
I cant see it being the turbo. Was the car warm at the time, is it doing it everyday etc?
I don't drive it often but it was hot yesterday and was doing it then.

What else could it be? Could it be rings then?

I have blocked the PCV off and also have a catchtank with a braided line from both camcovers, the can vents to atmosphere. Could that be it?

I got an e-mail back from Precision Turbo and they said that the turbo has steel piston rings not rubber so should be ok...
 

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My dads old Skyline started to get puffs of smoke that were grey, within a couple of weeks when you came to a stop after a good burn the idle started to sound just a bit off. That was rings gone bye bye :(

Could the PCV being blocked off cause this, or full catchtank? When you say turbo is new how many miles on it? Did you have any oil in the pipework from previous turbo that could be just burning off?

If you don't drive it often maybe its just moisture, especially with warm days and then crisp fresh nights?
 

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Discussion Starter #7 (Edited)
My dads old Skyline started to get puffs of smoke that were grey, within a couple of weeks when you came to a stop after a good burn the idle started to sound just a bit off. That was rings gone bye bye :(

Could the PCV being blocked off cause this, or full catchtank? When you say turbo is new how many miles on it? Did you have any oil in the pipework from previous turbo that could be just burning off?

If you don't drive it often maybe its just moisture, especially with warm days and then crisp fresh nights?
After a hard drive it sounds fine as far as i can tell. When you say off, what do you mean by that? Mine has a 4" downpipe to straight pipe so you can hear everything.

Turbo is brand new, probably about 500miles at the most. All brand new pipework, brand new intercooler, and intercooler pipes. It could well be something burning off though but seems to be quite alot of mileage for that? I also have replica mines cam baffles in my cam covers... I fitted it all myself too so cant think of anything that could be causing it :(

I only noticed it yesterday after at least 1hr 30mins of driving and quite hard driving too, also alot of that was motorway.
 

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Discussion Starter #11 (Edited)
Precision don't need a restrictor apparently due to steel piston rings instead of rubber seals, so im not sure. They are trying to tell me it could be because of oil contamination or oil drain. My oil drain is very short and straight down into the sump. Oil is 500miles old.

I will have to do a compression test and see if its the rings.
 

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Have you not got another turbo you can try? If you havnt you could remove your turbo put your oil feed into your oil drain and start the car up and give it a rev to see if the smoke has cleared. I had to do this on my honda civic turbo as the bb garrett was smoking on tick over
 

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Or just send the turbo off for testing I'm sure Owen devolopments do precision turbos, sometimes you can see the oil around rear housing
 

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you wont hurt it by fitting a 1mm restrictor, I have a t piece and a manual gauge I put in to test pressure feeding the turbo.
 

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Discussion Starter #15

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See this is the problem with precision and the reason I didn't buy one. The uk support isn't that great and there's not enough sold worldwide for there to be enough info on them like the Garrett's. Your best bet is to send the turbo to a uk specialist for a check so you no
 

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Discussion Starter #19
See this is the problem with precision and the reason I didn't buy one. The uk support isn't that great and there's not enough sold worldwide for there to be enough info on them like the Garrett's. Your best bet is to send the turbo to a uk specialist for a check so you no
Spoke to as UK specialist for Precision and they didn't really have much to say either to be honest.
 

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just go by garrett specs it will be fine, just use a restrictor so you don't see past 45 - 50 psi max at the turbo inlet flat out warm oil job done, I see no need sending the turbo away as when the pressure is reduced it will most likely stop leaking and be fine I would personally try it, well I would and I have ;)
 
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