PCV and FI cars...
Thread Starter
Launching!
Joined: Dec 2001
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From: Jacksonville, FL
PCV and FI cars... I recently had my car on a dyno to be tuned.. I noticed after every pull, the amount of oil burning through the exhaust would get progressively worse. At first, the smoke would only appear after the clutch was depressed after a full pull. After our 8th or 9th pull, it started to get some VERY minor smoke at high RPMS. We're assuming this is just residual oil that was sitting in the intake.
Okay, so i'm thinking that the PCV is the problem. Has anyone tried the LS6 PCV change on a FI car? Has anyone else had my problem?
Here is a link the the PCV mod so you dont have to look for it...
http://www.ls1.com/forums/showthrea...ht=pcv+air+pump
Thanks!
bob
__________________
2002 WS6
Black/Ebony, MN6, Pro 5.0, TTI single turbo 60-1. 7psi, comp 918s along with other odds and ends.
Okay, so i'm thinking that the PCV is the problem. Has anyone tried the LS6 PCV change on a FI car? Has anyone else had my problem?
Here is a link the the PCV mod so you dont have to look for it...
http://www.ls1.com/forums/showthrea...ht=pcv+air+pump
Thanks!
bob
__________________
2002 WS6
Black/Ebony, MN6, Pro 5.0, TTI single turbo 60-1. 7psi, comp 918s along with other odds and ends.
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From: Chi-Town, IL
Re: PCV and FI cars... If I would of know about running the filter off the PCV line then run a line off the filter back into the intake I would of done that, but I deleted the entire thing and am running 2 breather valves..
I get a descent amount of smoke coming from them...
I get a descent amount of smoke coming from them...
Re: PCV and FI cars... I routed my pvc hoses to the air pump (only thing the air pump is used for now)
and the air pump vents into the atmopshere.
And closed up the pvc "in" on the intake.
this should provide a constant vacuum and keep out the oil.
I havent got to run my car that much since the weather has been so bad, but i think ths should fix it once and for all.
and the air pump vents into the atmopshere.
And closed up the pvc "in" on the intake.
this should provide a constant vacuum and keep out the oil.
I havent got to run my car that much since the weather has been so bad, but i think ths should fix it once and for all.
Re: PCV and FI cars... I have it set up, so when the car is on the air pump is pumping. Im not sure how long these pumps will last under contunious use. I have about 1000 miles on it the way its set up know, so i guess ill see sooner or later.
I just wanted a constant vacuum.
I just wanted a constant vacuum.
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From: College Station, Tx
Re: PCV and FI cars... The stock air pump will not flow enough CFM to maintain a depression when you start getting into any rpm's - so you will end up with a pressurized crank case.
Chris
Chris
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Joined: Jan 2002
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From: Orange Park, FL
Re: PCV and FI cars... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ChrisB:
<strong> The stock air pump will not flow enough CFM to maintain a depression when you start getting into any rpm's - so you will end up with a pressurized crank case.
Chris </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">So who knows a good fix for this then when going FI?
<strong> The stock air pump will not flow enough CFM to maintain a depression when you start getting into any rpm's - so you will end up with a pressurized crank case.
Chris </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">So who knows a good fix for this then when going FI?
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From: Chi-Town, IL
Re: PCV and FI cars... Scott do you get a descent amout of smoke coming out of those..
I'm sure you don't since its a fresh motor, but just wondering..
I'm not sure weather or not the rear breater valve on the drivers side valve cover is spitting oil because of blow by, or because of the valvetrain splash, but oil is dripping down on that side and hitting the header and making it hard to breath inside the cabin at times... <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" />
Or it could be a leaky valve cover, but I'm pretty sure its the breather because its soaked...
I'm sure you don't since its a fresh motor, but just wondering..
I'm not sure weather or not the rear breater valve on the drivers side valve cover is spitting oil because of blow by, or because of the valvetrain splash, but oil is dripping down on that side and hitting the header and making it hard to breath inside the cabin at times... <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" />
Or it could be a leaky valve cover, but I'm pretty sure its the breather because its soaked...
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Thread Starter
Launching!
Joined: Dec 2001
Posts: 263
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From: Jacksonville, FL
Re: PCV and FI cars... smokinHawk,
How do you have the airpump set to turn on? Is it running continually? I've thought about setting it up on a relay so that it'll only turn on while i'm in boost, but i'm affraid that this setup wont work all too well (if only on under boost) I've also heard that if the airpump is on continually, it will burn up.
any insite?
How do you have the airpump set to turn on? Is it running continually? I've thought about setting it up on a relay so that it'll only turn on while i'm in boost, but i'm affraid that this setup wont work all too well (if only on under boost) I've also heard that if the airpump is on continually, it will burn up.
any insite?
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From: Objects in mirror no longer matter.
Re: PCV and FI cars... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by smokinHawk:
<strong> I routed my pvc hoses to the air pump (only thing the air pump is used for now)
and the air pump vents into the atmopshere.
And closed up the pvc "in" on the intake.
this should provide a constant vacuum and keep out the oil.
I havent got to run my car that much since the weather has been so bad, but i think ths should fix it once and for all. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It will NOT pull a vacuum.
<strong> I routed my pvc hoses to the air pump (only thing the air pump is used for now)
and the air pump vents into the atmopshere.
And closed up the pvc "in" on the intake.
this should provide a constant vacuum and keep out the oil.
I havent got to run my car that much since the weather has been so bad, but i think ths should fix it once and for all. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It will NOT pull a vacuum.
Re: PCV and FI cars... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Fenris Ulf:
<strong> It will NOT pull a vacuum. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How do you know this?
I'm curious.
I got this idea from a guy how has a 9.6 second vortec supercharged lt1 transam. running 20+ psi with 150 shot. He said it worked great.
<strong> It will NOT pull a vacuum. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How do you know this?
I'm curious.
I got this idea from a guy how has a 9.6 second vortec supercharged lt1 transam. running 20+ psi with 150 shot. He said it worked great.
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Re: PCV and FI cars... </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by smokinHawk:
<strong>How do you know this?
I'm curious.
I got this idea from a guy how has a 9.6 second vortec supercharged lt1 transam. running 20+ psi with 150 shot. He said it worked great. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think you'll find that it won't work, solely because Fenris Ulf says so. That's typically what I've found with respect to him. <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Sounds to me as if you have an impeccable source, on which to base the belief that your air pump WILL work. I wouldn't worry too much about other opinions.
SC-
<small>[ March 01, 2003, 07:40 AM: Message edited by: SS00Blue ]</small>
<strong>How do you know this?
I'm curious.
I got this idea from a guy how has a 9.6 second vortec supercharged lt1 transam. running 20+ psi with 150 shot. He said it worked great. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think you'll find that it won't work, solely because Fenris Ulf says so. That's typically what I've found with respect to him. <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Sounds to me as if you have an impeccable source, on which to base the belief that your air pump WILL work. I wouldn't worry too much about other opinions.
SC-
<small>[ March 01, 2003, 07:40 AM: Message edited by: SS00Blue ]</small>
Thread Starter
Launching!
Joined: Dec 2001
Posts: 263
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From: Jacksonville, FL
Re: PCV and FI cars... my question is... if i use the air pump like SmokinHawk suggested...it's electric. I have a feeling that it isnt going to last too long. Any insight on that?
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From: F.H,Waterford,Port Huron, MI
Re: PCV and FI cars... Smokinghawk I had the same problem and I was going to do the air pump but I real don't like the idea of the pump out line to atmosphere as that would but oil everywhere. And the weight of the pump and then remounting it. So Phill had the idea of a Moroso vac. I use the metco billet base then push the "breather" into it and then a big tube runs down to the exhaust weld on valve and under boost it pulls airout. The breather top and the exhaust valve have tons of screens and traps to keep oil from getting in the exhaust but some does. Then the top port in the tbody is blocked of and the Incon check valve is moved to the lower line. As for the upper PCV port in the valve cover it is just a line from 11/32 to 5/8 over to a Steff's oil catch can. The can is real only a in-breather but about 1oz. of oil comes out every week into the can. The can holds 2 1/2 cups of oil. With 1 Metco breather and no upper PCV I blew the driver valve gasket out on the highway at 120mph under 8-9lb. If it happens again then 2 moroso oil e-vac. These Moroso parts are the same as the top fuel rail cars use and they have way more power!
<small>[ March 02, 2003, 05:24 PM: Message edited by: 2FAST4U ]</small>
<small>[ March 02, 2003, 05:24 PM: Message edited by: 2FAST4U ]</small>
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From: F.H,Waterford,Port Huron, MI
Re: PCV and FI cars... jax white ta the upper part of the pump is sealed I pumped a bowl of water with it. A friend with a 800hp N/A camaro is useing the same pump and a catch can with a breath. It does work but I don't care for it and I think it is best to use a catch can if it is street driven as oil will get on everything. I have tryed everything from screens,breathers,pcv,and block off. oh and when the gasket poped there was a the smoke was so bad traffic came to a stop behind me and a cop took of after me but i got away.
Re: PCV and FI cars... To solve the problem of "oil running every where" from the pump, the lines go into a catch can then to the pump (to trap the oil residue).
The pump with out brakets weighs 2 lbs, Its wedged in next to the battery. the catch can is only a few onces.
I hope to get pictures up soon, but ive been reealy buzy with school.
I also hope to do alot of "test" driving to see if this actually works, but the weather has been bad and i cant get the TA out of the driveway.
The pump with out brakets weighs 2 lbs, Its wedged in next to the battery. the catch can is only a few onces.
I hope to get pictures up soon, but ive been reealy buzy with school.
I also hope to do alot of "test" driving to see if this actually works, but the weather has been bad and i cant get the TA out of the driveway.
Thread Starter
Launching!
Joined: Dec 2001
Posts: 263
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From: Jacksonville, FL
Re: PCV and FI cars... Just a heads up...
I've installed the LS6 PCV system and it seems to have eliminated my oil consumption issue. Now i just have to order a check valve to eliminate the crankcase pressure issue <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I've installed the LS6 PCV system and it seems to have eliminated my oil consumption issue. Now i just have to order a check valve to eliminate the crankcase pressure issue <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Joined: Apr 2002
Posts: 1,755
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From: Cincinnati, Ohio
Re: PCV and FI cars... I have the LS6 pcv system and I'm getting too much blowby. I just put the engine together (maybe 800 miles) so maybe the rings aren't seated yet. I also went with .022 ring gap on the 1st and 2nd ring. There is differing opinions on the ring gap. Some go down to .015 range. So maybe thats an issue. I plugged both valve cover vents. I was thinking about hooking the valve cover hoses back up. My vent hose I have running to an in line fuel filter (carb type) and then I have a hose running to the ground because it spews blowby goo out when you get on it. The pcv does suck good at idle. I'll let you know if I get it figured out.
Re: PCV and FI cars... smokin hawk is using the pump to keep oil out of the intake, and it WIll work perfect for that. also if you run a filter on the crankcase as a fresh air source it will never build positive any more than a stock pcv setup would.
he is not using it for ring seal purposes..
re-read the subject
he is not using it for ring seal purposes..
re-read the subject