RAP1D Member Donating Members 3,739 Member For: 17y 10m 30d Gender: Male Location: Sydney NSW Posted 08/09/08 10:53 AM Share Posted 08/09/08 10:53 AM and oil vapours in the intake which become vapours in the combustion chambers, greatly increase the chances of detonation. Link to comment Share on other sites More sharing options...
pip_brendanAKAfrosty Member 108 Member For: 15y 8m 7d Gender: Male Location: brisbane Posted 08/09/08 02:54 PM Share Posted 08/09/08 02:54 PM on my old NA ute I just had a lil air filter on there, I didnt understand the concept 100% but I had seen plenty of other kids runnin them so I tried it... Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 20d Gender: Male Posted 09/09/08 03:45 PM Share Posted 09/09/08 03:45 PM You have two sides to the PVC system. The PVC valve which is on the intake manifold vacum side and the rocker cover to pre throttle plate side.The vacum side sucks on cruise/idle whilst the rocker cover side vents under load.For performance purposes filtering the rocker cover side helps but also for keeping the engine running better under cruise, having one on the vacum side helps also. Link to comment Share on other sites More sharing options...
hanra Into the laaaake Member 1,532 Member For: 16y 10m 5d Gender: Male Location: Nrth Qld Posted 10/09/08 09:45 AM Share Posted 10/09/08 09:45 AM You have two sides to the PVC system.You mean Positive Crankcase Ventilation, PCV? Link to comment Share on other sites More sharing options...
ETM Member 1,194 Member For: 17y 1m 6d Gender: Male Location: syd south Posted 10/09/08 09:56 AM Share Posted 10/09/08 09:56 AM pretty sure he is a plumber haha Link to comment Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 21y 20d Gender: Male Posted 10/09/08 02:32 PM Share Posted 10/09/08 02:32 PM 1.45 am with the flu makes you think like a plumber Link to comment Share on other sites More sharing options...
hanra Into the laaaake Member 1,532 Member For: 16y 10m 5d Gender: Male Location: Nrth Qld Posted 10/09/08 08:56 PM Share Posted 10/09/08 08:56 PM Hahahahaha. Get well soon! Link to comment Share on other sites More sharing options...
ORSMXRT Member 167 Member For: 16y 4m 9d Posted 11/09/08 12:02 AM Share Posted 11/09/08 12:02 AM Thanks for the write up. I too have my catch can sitting in the garage for about 18months and never thought of doin something like that.Guess what I'm doing Sunday? Link to comment Share on other sites More sharing options...
seventytwo Still have a turbo, it's just on a diesel. Lifetime Members 5,368 Member For: 18y 9m 12d Gender: Male Location: The 8th Dimension Posted 11/09/08 08:37 AM Author Share Posted 11/09/08 08:37 AM Good luck and dont forget the pics Link to comment Share on other sites More sharing options...
Smitty New Member 16 Member For: 15y 6m 21d Posted 09/12/08 01:52 PM Share Posted 09/12/08 01:52 PM (edited) I owned a skyline that I ran a catch can on and I just vented it to atmosphere, through a small filter which I'm pretty sure made it legal. The main reasons I vented to atmosphere for is 1. sometimes the catch can won't catch everything and this oil vapour mixed can cause detonation and when plumbed in before the intercooler or turbo, can sometimes accumulate in the intercooler itself, 2. (this one depends on where its plumbed in also) if or when for some, your engine lets go under boost the blowby will pretty much push a sh1tload of oil out the breather and go into the turbo\intercooler\engine and cause more drama(bend tubo blades etc). I vented mine to atmosphere to hopefully avoid some of this. It is important though when running a vent to atmosphere setup that after the catch can a filter of some type is used as when the engine is under vacuume it will be sucking a small amount of air in also and you don't want crap getting in with your cams. Keeps the cops happy too. RB engine is a bit different but the same principles are still there. If anyone wants a pic I could probably put a couple up.If I am wrong by the way, I am happy to be corrected!My 2cSmitty Edited 09/12/08 01:53 PM by Smitty Link to comment Share on other sites More sharing options...
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