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The Terminator
Engine/Tuning
Quick Oil Catch Can Question
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<blockquote data-quote="MalcolmV8" data-source="post: 11361239" data-attributes="member: 8854"><p>Like slowyellow said. From air intake tube (between mass air and TB) to catch can, to valve cover. It's just like how the passenger's side valve cover is plumbed from the factory except you're putting a catch can.</p><p></p><p>Let us know how that works. I'm curious because under normal driving conditions air will flow from the air intake tube, into the passenger's side valve cover, out driver's side through the PCV valve into the intake manifold before the blower and also to a port after the blower (there's a tee fitting) which will be under vacuum in normal driving.</p><p>However when you WOT and go into boost the hose on the driver's side will now go under pressure instead of vacuum. The PCV valve is supposed to stop boost going back into the driver's side valve cover.</p><p>Your crank case now gets some pressure too from blow by which is going to exit on the passenger's side valve cover going into the air intake tube which will now be in a higher vacuum state than before because the TB is wide open sucking in a lot of air.</p><p></p><p>So essentially what I'm getting to is the catch can on the passenger's side will experience air travelling in opposite directions depending on normal driving or WOT. Catch cans are made to trap oil in one direction, not both. So make it catch oil in WOT from going into your air intake tube and in normal driving if it gets sucked back into the passenger's side valve cover then I guess that's no big deal. Probably helpful really as it may save you having to empty it.</p><p></p><p>Be interesting to see the results you come up with.</p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 11361239, member: 8854"] Like slowyellow said. From air intake tube (between mass air and TB) to catch can, to valve cover. It's just like how the passenger's side valve cover is plumbed from the factory except you're putting a catch can. Let us know how that works. I'm curious because under normal driving conditions air will flow from the air intake tube, into the passenger's side valve cover, out driver's side through the PCV valve into the intake manifold before the blower and also to a port after the blower (there's a tee fitting) which will be under vacuum in normal driving. However when you WOT and go into boost the hose on the driver's side will now go under pressure instead of vacuum. The PCV valve is supposed to stop boost going back into the driver's side valve cover. Your crank case now gets some pressure too from blow by which is going to exit on the passenger's side valve cover going into the air intake tube which will now be in a higher vacuum state than before because the TB is wide open sucking in a lot of air. So essentially what I'm getting to is the catch can on the passenger's side will experience air travelling in opposite directions depending on normal driving or WOT. Catch cans are made to trap oil in one direction, not both. So make it catch oil in WOT from going into your air intake tube and in normal driving if it gets sucked back into the passenger's side valve cover then I guess that's no big deal. Probably helpful really as it may save you having to empty it. Be interesting to see the results you come up with. [/QUOTE]
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