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I post this in the library section as a reply. I don't know if I was suppose to post it there so that is why I am posting here as well. If I am in the wrong please delete thanks!
Can I run this set up but instead of tapping back into the intake with the "clean blow by gasses" can I just vent it into the air? What would be the advantage/disadvantages to putting the gasses back into your engine? What are the advantages/disadvantages of venting into the air?
Right now I have the oil seperator hooked up the stock way except the line coming off the tee on the valve cover (the one that points toward the driver fender) is just vented into the air. It gets a slight build up of oil on it though and figured if I reroute the way posted above and then vent from the top of the catch can I shouldn't get any oil build up at all! Someone please proove me right or wrong. In the past I have had losing oil problems and every little bit that I can keep in the engine the better!!!!
the top pic shows the rerouted seperator and the bottom shows what I am talking about.
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You do not want to vent to air , same as puting just a filter on the valve cover , you will not get the crankcase evacuation needed at WOT !!
"Right now I have the oil seperator hooked up the stock way except the line coming off the tee on the valve cover (the one that points toward the driver fender) is just vented into the air."
Posted above is how I have it set up now. Do you see a problem with how its set up?
"Right now I have the oil seperator hooked up the stock way except the line coming off the tee on the valve cover (the one that points toward the driver fender) is just vented into the air."
Posted above is how I have it set up now. Do you see a problem with how its set up?
You want that going to the intake , under WOT the intake will create a slight vacuum causing it to suck out the crankcase vapors , excess crankcase vapor will cause a loss of power and could cause oil leaks ...
You want that going to the intake , under WOT the intake will create a slight vacuum causing it to suck out the crankcase vapors , excess crankcase vapor will cause a loss of power and could cause oil leaks ...
WHen you say intake do you want it going to the intercooler pipe right before the throttlebody or the air intake before the turbo? Can someone with a DE+t running the stock seperator please tell me how you run it or send a pic. Thanks!
I routed mine back to the turbo inlet along with my BOV.
Could I just T into the line from the BOV going to the intake? Or would there have to be a seperate bung on the intake?
I noticed that my oil seperator is covered in oil. Especially the line down at the bottom where the oil is suppose to drain back into the block. There is just oil everywhere. Which line is suppose to have that pipe cleaner brush in it anyway. I know this is most of my oil shortage problems. Now I smell something burning sometimes when I drive. Besides the fact that the clutch is fried I believe it is the oil coming off of the seperator and hitting hot components around it. Could I redo my lines the new way as stated above and then take the line off of the top of the seperator and T it into the BOV line?
Wow, you are making that so complicated... I seriously just ran my vents together and then to an effing Dr. Pepper can with some holes drilled in it. The can stayed cool enough to let the air and oil seperate, the oil settled in the can and the vent worked as... a vent. Every once and a while I drink a new Dr. Pepper and replace the can. You don't even need power tools to make a few small holes in a Dr. Pepper can. As far as pressure building up in the crank case if you vent the case to the attmosphere you were misinformed. With an adequate vent... how exactly does pressure build up? You can even bling it up and use some expencive carbonated drink to do this. If you want to be JDM bling, get a Kirin water bottle and use it... just make sure you put it somewhere it won't melt.
Last edited by LOVEMUFFIN : 03-09-2005 at 04:22 PM.
Wow, you are making that so complicated... I seriously just ran my vents together and then to an effing Dr. Pepper can with some holes drilled in it. The can stayed cool enough to let the air and oil seperate, the oil settled in the can and the vent worked as... a vent. Every once and a while I drink a new Dr. Pepper and replace the can. You don't even need power tools to make a few small holes in a Dr. Pepper can. As far as pressure building up in the crank case if you vent the case to the attmosphere you were misinformed. With an adequate vent... how exactly does pressure build up? You can even bling it up and use some expencive carbonated drink to do this. If you want to be JDM bling, get a Kirin water bottle and use it... just make sure you put it somewhere it won't melt.
Thanks for your thoughts on this but I don't think I want a soda can under the hood of my beautiful p11. There is something obviously wrong and pressure building up because there is oil seeping out of the oil seperator connections. I don't think sticking an alluminum can at the end of my hose is going to do the trick. I think I have the brush in the wrong hose. If I recal correctly its suppose to be in the top hose. The one that is suppose to connect to the intake. I have it in the lower hose the one that drains the oil back into the block. I think this is restricting the oil flow back into the block backing oil up into the seperator and the hose on the top. I had work done to my car and oil seperator removed. After some oil issues I decided I should put it back on.
Just get a catch can. Run a hose from the block to the t on the VC pointing forward, and run the other end of the T(pointing to driver side) to the catchcan.
Yeah, I skipped all the stuff you have... here is my diagram...
If anyone trys to tell you that is bad for the motor they are mistaken. You can replace the Dr. Pepper can with one of them chromed out oil catch cans that is made to look 'good' and cost a lot. I only used my car, I was not terribly afraid if someone thought I had a dirty engine bay, or a Dr. Pepper can instead of an 80~100 dollar piece that does the same thing. Most Japanese tuners do this... however they usually use the catch cans and vent the can to the attmosphere.
Here is a pic of a JDM tyte oil catch can...
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Last edited by LOVEMUFFIN : 03-09-2005 at 05:03 PM.
Just get a catch can. Run a hose from the block to the t on the VC pointing forward, and run the other end of the T(pointing to driver side) to the catchcan.
By doing this I am still not getting the suction I need to suck out the crank case vapors. If that is not necassary then why did nissan design it that way?
Today I ripped it all off by the way and cleaned everything up. I installed it all back the way it was except I yanked out that little pipe cleaner thing. It was in the wrong hose anyway. Does anyone know if I can T into the hose from the BOV to the intake?
By doing this I am still not getting the suction I need to suck out the crank case vapors. If that is not necassary then why did nissan design it that way?
Today I ripped it all off by the way and cleaned everything up. I installed it all back the way it was except I yanked out that little pipe cleaner thing. It was in the wrong hose anyway. Does anyone know if I can T into the hose from the BOV to the intake?
The PCV valve only sucks in air under vaccuum. You dont want it to pressurize the crank case. While boosting it is closed. Many people run it the same way I run it. You dont wanna get oil back into the intake anyway, it lowers octane points which leads to detonation.
The PCV valve only sucks in air under vaccuum. You dont want it to pressurize the crank case. While boosting it is closed. Many people run it the same way I run it. You dont wanna get oil back into the intake anyway, it lowers octane points which leads to detonation.
So your way what do you do with the other nipple on the catch can? Do you plug it or put a little filter on or what? I am assuming your catch can has two nipples. I never seen one with only one?
In theory I have mine currently set up the way you say. The only difference is I have the seperator between the VC and the block nipple. Then I just have a tube venting to air off the T on the VC instead of going into a catch can. There has to be something wrong with this set up. I don't get that much blow by coming out of the vented tube. It's just a little wet at the end and there is nothing anywhere else wet around it. But... the other tube that goes to the seperator is soaked. As well as the seperator and the line going back into the block. The hose off the T on the VC that goes to the seperator was even split. And all the hoses were swollen. There is definately pressure building up there. Maybe all my problems were that stupid brush being in the wrong tube? I have since disposed of that and will run the car a while the way it is. I really don't want to have blow by gasses going into the intake. I wouldn't want to lower octane ratings or have to clean that crap out all the time. I have many friends with dsm's and they just run the hose off the valve cover and vent to the air the same way I do. They don't seem to have any problems. Then again a bunch of them did blow their dip sticks out!?! Another thing I noticed but maybe totally unrelated is that it takes forever for oil to drain back into the oil pan. If I check my oil I have to wait like 5 minutes after I shut the car off or after pouring in the last quart. Utherwise there will just be oil all over the dipstick.
Last edited by robkris8079 : 03-10-2005 at 03:52 PM.
just get a catch can, thats what i did, i had 3 fittings on my can though, one fitting had a breather filter, and the other 2 were for the pcv
Why get a catch can when I have the seperator? I read all the posts and haven't seen any proof of the catch can being any better. If anything it seemed that the seperator was better becasue it drained the oil back into the block. You say the other two were for the PCV? So you routed it back into the intake, correct?
Well I have been driving with the seperator cleaned out for a day and boy is there a difference! The car is much peppier now. I haven't smelled that burning smell since either! I have still not tapped the tube into the intake. I know you guys don't like to use those little filters but shouldn't I put one on there until I can make a new intake with the bung for the PCV tube? Since I cleaned it all up that little tube that vented into the atmosphere is sucking in alot of air at idle (Is that normal)? I want to run the hoses the "new" way and use clear tubing so I can see how much if any crap is getting into my intake. Then again the car is running superb so maybe its not even worth trying to hook that hose up.
well, i had a t3/t4 set up and i couldnt keep the stock seperator, so i got my catch can, and no, i dindt have it tapped back into the intake, i had one hose on catch can to block fitting, one from pcv, and last fitting had a filter on it.
