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Quick question about the pt gt crankcase ventilation system

 
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Old 25 May 2010, 09:46 pm
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Default Quick question about the pt gt crankcase ventilation system

Some sites on the internet say that turbocharged cars have a check valve for the pcv valve to close it off when boosting to keep from pressurizing the crankcase. Other sites say that turbocharged cars simply vent the boost pressure back into the air box before the turbocharger. Anyone know which system is used on our pt turbo's?
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Old 26 May 2010, 11:23 am
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Default Re: Quick question about the pt gt crankcase ventilation system

PCV has a check valve.
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Old 26 May 2010, 11:58 am
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Default Re: Quick question about the pt gt crankcase ventilation system

the PT has a PVC/check valve like said above. and also vents some pressure back into the airbox intake pipe via 3/8 hose, a 1/8 line from the back of the turbo into a 4 way hose fitting is where it vents into the 3/8 line.
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Old 26 May 2010, 12:58 pm
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Default Re: Quick question about the pt gt crankcase ventilation system

The hose going from the valve cover on the drivers side, to the airbox, has a small hole in it. Would this result in a boost/vacuum leak, or would it simply vent into the atmosphere without any other effects?
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Old 27 May 2010, 10:17 am
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Default Re: Quick question about the pt gt crankcase ventilation system

The valve cover vent has no "boost" in it. It is not in the boost path.
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Old 27 May 2010, 05:32 pm
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Default Re: Quick question about the pt gt crankcase ventilation system

So having a small hole in that hose wouldnt affect the performance of the engine in any way, other than maybe dripping a little oil every once in a while?
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Old 28 May 2010, 12:49 pm
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Default Re: Quick question about the pt gt crankcase ventilation system

Correct.
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