PCV system set up for turbo....???
12-22-2007, 03:06 PM
#1
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PCV system set up for turbo....???
Anybody have a good set up for a t/c'd LT1? I've gotten some good ideas on LS1tech, but curious whats being run here for turbocharged LT1's. I need to do this on my ride and was looking for a good set up to use or nice write up to follow.
Thanks,
Eric Bazan
Thanks,
Eric Bazan
12-22-2007, 10:51 PM
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Eric, any reason why you want to keep the PCV?
Are you just wondering how to vent crankcase pressure or do you actually want to keep the little PCV?
I plan on running a line from the pass. side valvecover to a catchcan with a filter on it to vent. Some people run to a can, and then have the can hooked to the intake side of the turbo.
Jon
Are you just wondering how to vent crankcase pressure or do you actually want to keep the little PCV?
I plan on running a line from the pass. side valvecover to a catchcan with a filter on it to vent. Some people run to a can, and then have the can hooked to the intake side of the turbo.
Jon
12-22-2007, 11:02 PM
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Yeah, I just want to vent the crankcase pressure. Do I need to keep the little PCV? I was lookin at MightyMouses' set up on LS1tech. Seems pretty involved. What are your thoughts?
12-22-2007, 11:04 PM
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No, you dont need the valve. The valve is there to prevent backflow (since the pcv connects to the TB). You would cap the port on the TB, and just run a line from the valvecover to the catchcan.
12-22-2007, 11:15 PM
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Cool, I forgot I need to vent the crankcase. I took her for a little spin around the block and I noticed on decel I get some smoke. I figure its either because I have too much pressure in the crankcase or I need to restrict my feed to the turbo. I know my drain line is in a good position for drainage, so Im not worried about that. I have a function 7 oil feed restrictor Im gonna try. But, I definetly need to relieve the pressure in the crankcase.
On a separate note, what if I accidentally hooked up my wastegate up to the top port, instead of the side port for a short run around the block. Would it harm anything?
E
On a separate note, what if I accidentally hooked up my wastegate up to the top port, instead of the side port for a short run around the block. Would it harm anything?
E
12-22-2007, 11:25 PM
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Cool, I forgot I need to vent the crankcase. I took her for a little spin around the block and I noticed on decel I get some smoke. I figure its either because I have too much pressure in the crankcase or I need to restrict my feed to the turbo. I know my drain line is in a good position for drainage, so Im not worried about that. I have a function 7 oil feed restrictor Im gonna try. But, I definetly need to relieve the pressure in the crankcase.
On a separate note, what if I accidentally hooked up my wastegate up to the top port, instead of the side port for a short run around the block. Would it harm anything?
E
E
12-22-2007, 11:28 PM
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Why do some people get all involved with their PCV systems? Any particular reason? Or, is more a matter of prefrence? Mighty's is alwful involved where others are pretty simple.
12-22-2007, 11:36 PM
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12-23-2007, 08:48 AM
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The age old problem of how to properly vent a forced induction motor is continously discussed here. Venting the crankcase to atmosphere using a catchcan seems to be the method of choice, but still presents some problems. Mainly, how does the motor get positive ventilation during not boosted use. Harmfull by-products of combustion still enter the crankcase when in crusing or at idle and will contaminate the oil if not removed. To what extent this occurs, how much the car is driven and how often the oil is changed seems to determine what "system" is installed. Although not always an option, running both a catchcan venting the valve covers and a conventional PCV system would be a good compromise.
12-23-2007, 08:55 AM
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i have a moroso PCV exhaust gas vent kit which utilizes the vaccum from the exhaust to pull out the gasses i to will be deleting the PCV valve cause i dont want any of that in my IC but i have the new edelbrock manifold so no how do i top off the pcv hole on this manifold ?w/o whatever i put in there wont come out.
12-23-2007, 09:12 AM
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12-23-2007, 09:21 AM
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This isn't a bad method to vent the crankcase, although some people who have chose this method have had some issues with contaminating O2 sensors. I suppose this would depend on how much oil/blow-by the motor is creating.
If the Edelbrock intake has a pcv valve connection that utilizes a push-in style grommet, you might consider taping the hole with a pipe tap which is a tapered thread and then installing a pipe plug in it. It could also be welded closed. Although not the perfered method, it could be sealed with a filler piece of aluminum and JB Weld or a simular product.
12-23-2007, 10:51 AM
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Good point. Its best to run to a catch can and then run the catchcan to the inlet of the compressor. This will vent at part and WOT.
12-23-2007, 11:36 AM
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Yes, seems to work okay for you turbo guys. Must use a sealed cap if running one on the catchcan. The reason I mention this is because most are sold with a vented/filtered cap.
12-23-2007, 12:56 PM
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Anyone have a nice little schematic of the above mentioned system? I got a good idea what youre talking about, but a nice visual would help out. Would you still retain the stock PCV in this system? Would the PCV valve run to the catch can?