what to do about pcv valve from boost
08-13-2004, 01:03 PM
#11
1.5 BAR
Join Date: Dec 2002
Posts: 716
Re:what to do about pcv valve from boost
I looked at your picture....am I understanding correctly that if you don't change the PCV setup, there are potential problems from it...like the rings giving up sooner than they would with a catch can setup. Sorry to sound like a dumbass but I'm planing on running 10-14 psi at the track (alot more than I have been running) and I don't want to cause any MORE problems than I going to have already.
08-14-2004, 05:32 PM
#13
3.0 BAR
Join Date: May 2003
Posts: 3,365
Re:what to do about pcv valve from boost
no, the only mod that you could do with this setup would be to remove the blue line and install one of those small breather filters right there. If you dump the red line then the entire setup is completely useless, mise well just pull the hoses and do nothing at all.
The key here is you must have suction source which is BEFORE the turbo. Your car n/a is after the turbo on the intake manifold where you have suction until boost hits.
make sense?
The key here is you must have suction source which is BEFORE the turbo. Your car n/a is after the turbo on the intake manifold where you have suction until boost hits.
make sense?
08-14-2004, 09:13 PM
#14
1.5 BAR
Join Date: Nov 2003
Posts: 910
Re:what to do about pcv valve from boost
the motor will vent the crankcase untill the pressure out side becomes postive (boost) the the pcv valve will close and the motor will stop venting the crankase until the postive pressures (boost) goes away
08-14-2004, 10:24 PM
#16
3.0 BAR
Join Date: Nov 2003
Posts: 2,200
Re:what to do about pcv valve from boost
I'm hoping to try this pretty soon but I would hate to see oil just get sucked right into my turbo.... I've been trying to read up on this and am reading that some people have oil squirting out of the PCV valve etc... I have no idea. But like I said I'm looking into this right now...
Anyone else have an oil catch can hooked up? If so post up what you did and how you did it?
Anyone else have an oil catch can hooked up? If so post up what you did and how you did it?
08-15-2004, 01:23 AM
#17
1.5 BAR
Join Date: Jun 2003
Posts: 714
Re:what to do about pcv valve from boost
Originally Posted by quadnie
no, the only mod that you could do with this setup would be to remove the blue line and install one of those small breather filters right there. If you dump the red line then the entire setup is completely useless, mise well just pull the hoses and do nothing at all.
The key here is you must have suction source which is BEFORE the turbo. Your car n/a is after the turbo on the intake manifold where you have suction until boost hits.
make sense?
The key here is you must have suction source which is BEFORE the turbo. Your car n/a is after the turbo on the intake manifold where you have suction until boost hits.
make sense?
I'm not saying this is the way to go, but its better than leaving the stock PCV hooked up and adding a breather filter. I didnt realize this on my own engine until after boosting for a day or so i noticed that the pressure had blown the hose from the factory catch can, so i just left it unhooked and let it vent
08-15-2004, 04:20 PM
#18
0.5 BAR
Join Date: Feb 2004
Posts: 98
Re:what to do about pcv valve from boost
so is the moroso can thing in that diagram basically a performance/aftermarket carcoal canister? If i want to use my stock pcv valve system, can i run a line from the intake the the pcv then from the other side of the pcv to the air filter pipe and a valve cover breather and im good to go? this is assuming my pcv valve is working correctly. just to make sure, the pcv valve is the guy on top of my charcoal canister that looks like a ufo with a nipple right?
08-15-2004, 05:29 PM
#19
3.0 BAR
Join Date: May 2003
Posts: 3,365
Re:what to do about pcv valve from boost
alright, I will come back to this again and advice some things. Having an open system really isn't good for the car.. you need a vacuum source. Keeping it stock will get you vacuum until spool time, then it's positive pressure on the motor which will end up ------- you.
No you do not have to have an expensive aftermarket catch can, I've heard of some HMT style ones and also they sell plenty of generic ones off of ebay.. might be possibly to just get the parts from a hardware store. If you just want to be cheap and not worry about it for now, just bypass the catch can and have the puprle/red lines be as one.
I don't see the confusion here, it's a pretty simple setup. Go underneath the hood of a turbo DSM and they are setup like this, not too efficient without a catch can since your intercooler/charge pipes/intake manifold just get coated with oil, lowering octane values of the fuel.
The charcoal canister is something completely different, that is for a vapor return system for "emissions" purposes. You can just disconnect that ----, plug the lines and throw it away. I may do a charcoal diagram later for you people but right now let's focus on the PCV system.
any more questions?
-ryan
No you do not have to have an expensive aftermarket catch can, I've heard of some HMT style ones and also they sell plenty of generic ones off of ebay.. might be possibly to just get the parts from a hardware store. If you just want to be cheap and not worry about it for now, just bypass the catch can and have the puprle/red lines be as one.
I don't see the confusion here, it's a pretty simple setup. Go underneath the hood of a turbo DSM and they are setup like this, not too efficient without a catch can since your intercooler/charge pipes/intake manifold just get coated with oil, lowering octane values of the fuel.
The charcoal canister is something completely different, that is for a vapor return system for "emissions" purposes. You can just disconnect that ----, plug the lines and throw it away. I may do a charcoal diagram later for you people but right now let's focus on the PCV system.
any more questions?
-ryan
