PCV Modification for LS1's
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 767
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From: Noble OK
PCV Modification for LS1's
Anybody else done this? http://www.fbody.com/members/stevenm...ML/pcv_mod.htm I did mine this morning even though I wasn't having any of the symptoms, I figured it couldn't hurt. :rolleyes:
Le Mans Master
Joined: Jul 2000
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From: Fort Worth Texas
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Re: PCV Modification for LS1's (Xssesive)
I did steves mod on my 2000. The filter did catch some oil.
I think a better solution would be to use an electric motor to vacuum the crank case into a catch can and bypass the throttle body all together.
I think a better solution would be to use an electric motor to vacuum the crank case into a catch can and bypass the throttle body all together.
Drifting
Joined: Oct 1999
Posts: 1,576
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From: Austin TX
Re: PCV Modification for LS1's (kewlbrz)
I put a GReddy oil tank on my '99 ($89). Mounted the can on the right frame rail forward of the radiator shroud. So far, the clear plastic line from the PCV valve is WELL stained with oil, and this is after only 50 miles :eek: Good news is the line back to the TB is clean. Can't judge whether the pinging stopped yet, as it is in the 70s here in Dallas today!
If you do this mod, note that the supplied hose collapses under the combined heat under the hood and the vacuum draw from the intake, so you have to go buy a 5/8"x1/4" section of hose ($5 for 10' at Home Despot). I was originally worried about the total length of the hoses (a little over 5' when complete, full circle) but there is plenty of draw from the hose.
I'll post install pics later.
F
[Modified by Flintstone, 6:55 PM 8/10/2002]
If you do this mod, note that the supplied hose collapses under the combined heat under the hood and the vacuum draw from the intake, so you have to go buy a 5/8"x1/4" section of hose ($5 for 10' at Home Despot). I was originally worried about the total length of the hoses (a little over 5' when complete, full circle) but there is plenty of draw from the hose.
I'll post install pics later.
F
[Modified by Flintstone, 6:55 PM 8/10/2002]
Le Mans Master
Joined: Apr 2000
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Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: PCV Modification for LS1's (MelloYellow)
I seen your posts on LS1 tech so I gave your idea a shot, picked up the 50 micron one from pep boys. When I swapped intakes yesterday I couldnt believe how much oil was in there and in the ports. After driving it pretty hard for only a few hours there is already some oil the little cup. It doesnt seem to drop the vacuum as much as Steve's mod did. Time will tell how well it works but I put one of those see through gas filters without the element inline to the TB (had one laying around) and there is no oil in it yet. I may try the greddy can eventually but we'll see how this works..
[Modified by kp, 10:03 PM 8/10/2002]
[Modified by kp, 10:03 PM 8/10/2002]
Le Mans Master
Joined: Apr 2000
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Re: PCV Modification for LS1's (kp)
Heya. I've been too lazy to test the vacuum, but I'm sure it's better and improved over the SMH setup. I asked my mech how often I should change this type of filter and he said it should last almost forever, however long that is. ;)
I'm surprised that I've only collected maybe 1 teaspoon so far. It picks up oil over time, but it isn't really filling up quickly.. Makes me wonder if it's working 100%..? Haven't noticed any drop in oil pressure. I should probably check to see if it's restricing now that it is oil logged.
I'm still burning oil like the typical LS1, but am happy not to be injesting it into my intake and combustion. The rest must burn up or blow by the rings.
I'm surprised that I've only collected maybe 1 teaspoon so far. It picks up oil over time, but it isn't really filling up quickly.. Makes me wonder if it's working 100%..? Haven't noticed any drop in oil pressure. I should probably check to see if it's restricing now that it is oil logged.
I'm still burning oil like the typical LS1, but am happy not to be injesting it into my intake and combustion. The rest must burn up or blow by the rings.
Le Mans Master
Joined: Apr 2000
Posts: 7,248
Likes: 0
Re: PCV Modification for LS1's (kewlbrz)
I think a better solution would be to use an electric motor to vacuum the crank case into a catch can and bypass the throttle body all together.
Some have reversed their stock Air Pump to provide vacuum.
U want to try? Let us know!
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 767
Likes: 1
From: Noble OK
Re: PCV Modification for LS1's (MelloYellow)
I wondered about those 1/4 inch gas filters on Steves set up, seems to me once oil gets in the paper filter it will clog it up and not allow any flow. Where do you pick up one of those filters, looks kind of like a water separator we have on the jet skis. Thanks for all the good ideas! :yesnod:
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Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: PCV Modification for LS1's (MelloYellow)
Heya. I've been too lazy to test the vacuum, but I'm sure it's better and improved over the SMH setup. I asked my mech how often I should change this type of filter and he said it should last almost forever, however long that is. ;)
I'm surprised that I've only collected maybe 1 teaspoon so far. It picks up oil over time, but it isn't really filling up quickly.. Makes me wonder if it's working 100%..? Haven't noticed any drop in oil pressure. I should probably check to see if it's restricing now that it is oil logged.
I'm still burning oil like the typical LS1, but am happy not to be injesting it into my intake and combustion. The rest must burn up or blow by the rings.
I'm surprised that I've only collected maybe 1 teaspoon so far. It picks up oil over time, but it isn't really filling up quickly.. Makes me wonder if it's working 100%..? Haven't noticed any drop in oil pressure. I should probably check to see if it's restricing now that it is oil logged.
I'm still burning oil like the typical LS1, but am happy not to be injesting it into my intake and combustion. The rest must burn up or blow by the rings.
