S2000 Forced Induction S2000 Turbocharging and S2000 supercharging, for that extra kick.

Think my rings are leaking due to smoking issue.

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Old Apr 11, 2011 | 11:06 AM
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Default Think my rings are leaking due to smoking issue.

I have been having a bunch of smoke coming out my exhaust when in boost going wot. I thought it was my supercharger since that was leaking and I had oil in the intake manifold. I cleaned out the intake manifold and have the PCV line now just going to the ground and capped off on the intake manifold. My blower is leaking a little oil but there is no residue in the aftercooler at all. So the oil has to be coming from the engine.
Being that it is under wot and in boost it would lead me to believe that it is the rings leaking causing blow by.
Besides having the annoying smelly smoke is that a sign that it would go soon? Or is that pretty normal and should last fine for a good while still?
My car does have 143k miles on it now and been boosted for over a year and 20k miles or so. I am vortech sc'd at 406whp now. (12 psi)


Once it started smoking I did a compression and a leakdown test and both were good. no more than 5 psi difference.
Compression was 225 across the board. Leakdown less than 3 psi per cylinder.
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Old Apr 11, 2011 | 12:53 PM
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Valve seals possibly, but the leakdown wouldn't suggest that.

More than likely the s/c.
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Old Apr 11, 2011 | 01:15 PM
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There's no oil residue at all in the aftercooler or tb and intake manifold since I cleaned it out about 1 month ago. So really don't see how it would be the blower. Don't valve seals mostly leak during decel? My smoking seems to really only happen when hard on the throttle in boost now.
11.5 afr's wouldn't cause any gas smoke right? I am tuned for 11.3-11.5 or so afrs wot in vtec.
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Old Apr 11, 2011 | 02:36 PM
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I doubt your rings if your leakdown doesn't suggest it. Are you seeing white looking smoke from the PCV or breather port coming out?
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Old Apr 11, 2011 | 02:45 PM
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What color smoke?
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Old Apr 11, 2011 | 02:50 PM
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Not seeing any white smoke. Definitely looks and smells like oil smoke. Don't lose much oil. Added 1/4 quart today after 1k miles or so.
When on the dyno did not see any smoke coming from the breather filter I have on the valve cover. I have the PCV line just dripping to the ground. Hardly any oil has come out of that though. I used a clear vacuum line so I could see what sort of oil was coming out. Just looks slightly discolored now due to heat rather than oil coming out of it.

I didn't try a wet compression test however. Figured since both compression and leak down came back good that would be enough. I have been told by others that even if leak down is good they could be leaking.
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Old Apr 11, 2011 | 07:25 PM
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To rule out the S/C completely I would take the belt off & revert to stock ECU/injectors for a few days.
If it still smokes you know its the motor
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Old Apr 11, 2011 | 07:50 PM
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I think you're fine man. I thought the same thing, but it just smokes at wot. Is it black or blue smoke? black smoke is gas and blue is oil. maybe its just running a tad bit rich for safety?
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Old Apr 11, 2011 | 08:00 PM
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Does yours smoke a lot? Hard for me to see when driving but had a friend behind me say he got engulfed in smoke lol.
Believe it is blue smoke. Smells like it too. I am tuned 11.3-11.5 or so afrs wot. Pretty normal so not running really rich or anything.
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Old Apr 11, 2011 | 08:06 PM
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Does it smoke while on the throttle or right after you lift off the throttle?
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