Blow-by catch can
07-20-2010, 08:16 PM
#1
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Join Date: 09-20-2009
Location: Hayward, Ca.
Posts: 1,058
Blow-by catch can
Turbo cars under boost make the PVC valve leak a little, and cause a slight pressure in the crankcase that causes blow-by, that over time can goober up the intake, maf, and even the turbo, I am adding a catch can.
I need to know where the PCV valve is located[since I don't have a manual, with pictures],and how it should be plumbed. "Moon"
I need to know where the PCV valve is located[since I don't have a manual, with pictures],and how it should be plumbed. "Moon"
07-21-2010, 09:05 AM
#4
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Join Date: 01-24-2010
Location: MI
Posts: 472
Turbo cars under boost make the PVC valve leak a little, and cause a slight pressure in the crankcase that causes blow-by, that over time can goober up the intake, maf, and even the turbo, I am adding a catch can.
I need to know where the PCV valve is located[since I don't have a manual, with pictures],and how it should be plumbed. "Moon"
I need to know where the PCV valve is located[since I don't have a manual, with pictures],and how it should be plumbed. "Moon"
http://www.accmachtech.com/PCVCatchC...structions.pdf
07-21-2010, 11:28 AM
#6
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Join Date: 01-24-2010
Location: MI
Posts: 472
Turbo cars under boost make the PVC valve leak a little, and cause a slight pressure in the crankcase that causes blow-by, that over time can goober up the intake, maf, and even the turbo, I am adding a catch can.
I need to know where the PCV valve is located[since I don't have a manual, with pictures],and how it should be plumbed. "Moon"
I need to know where the PCV valve is located[since I don't have a manual, with pictures],and how it should be plumbed. "Moon"
http://www.modernperformance.com/cat...bed3cd4a089465
07-21-2010, 07:48 PM
#8
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Join Date: 01-04-2010
Location: Imported from Detroit
Posts: 1,584
Moon, check this out too, don't know if this will fit the HHR SS, as far as the mounting goes, but ya never know.
http://www.modernperformance.com/cat...bed3cd4a089465
http://www.modernperformance.com/cat...bed3cd4a089465
07-21-2010, 10:07 PM
#9
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Join Date: 11-27-2007
Location: Austin, Texas
Posts: 1,115
The Primary PCV is integral with the valve cover and feeds directly into the intake. There are also two other relevant connections that vent into the intake if blowby builds up to a higher than normal level.
One connects "post intercooler" to the intake manifold, the other connects just before the turbo inlet (see photo). There is a one-way check valve that is inline on the hose to the intake to prevent boost pressure from entering the crankcase, and if that fails you can "coke up" the whole intake, so that is a critical feature, and if you re-plumb things, make sure you don't eliminate any fittings or especially, this critical check valve.
I checked the intake tract at about 35,000 miles, and everything was still dry, so I ended up not installing a catch can after considering it.
One connects "post intercooler" to the intake manifold, the other connects just before the turbo inlet (see photo). There is a one-way check valve that is inline on the hose to the intake to prevent boost pressure from entering the crankcase, and if that fails you can "coke up" the whole intake, so that is a critical feature, and if you re-plumb things, make sure you don't eliminate any fittings or especially, this critical check valve.
I checked the intake tract at about 35,000 miles, and everything was still dry, so I ended up not installing a catch can after considering it.
07-21-2010, 10:25 PM
#10
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Join Date: 09-20-2009
Location: Hayward, Ca.
Posts: 1,058
c2vette: After doing some checking online, and looking at the present setup on our engines, and seeing how it's hooked up, I think I'll leave well enough alone. It can be done,but looks like stock setup has it covered pretty good, and the plumbing won't be real easy, and redundant to the stock setup.
Got the catch can in the mail today, looks real good, but I only paid $18.00 for it, so no biggie. Maybe I'll just take it over to Oakland, and sell it as a "Crack" pipe.
Thanks guys for all the input. It was a nice "Pipe dream" for a few days, anyway. "Moon"
Got the catch can in the mail today, looks real good, but I only paid $18.00 for it, so no biggie. Maybe I'll just take it over to Oakland, and sell it as a "Crack" pipe.
Thanks guys for all the input. It was a nice "Pipe dream" for a few days, anyway. "Moon"