Proper way to mount catch can?
2) off the pcv valve on the intake manifold
Do a search to find out why, this has been beaten to death in this forum.
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1) inline of valve cover and intake tube
hmm.......I'm a little confuse cuz I see a lot of car ( in Japanese magazine ) do this way.
hmm.......I'm a little confuse cuz I see a lot of car ( in Japanese magazine ) do this way.
doood that setup in the pics doesnt do anything ur suppossed to hook it to that blue tubeu dont want oil going in ur intake / intake manifold
doood that setup in the pics doesnt do anything ur suppossed to hook it to that blue tubeu dont want oil going in ur intake / intake manifold
the way the pis on this post has it it just moves air from th e intake mani to teh can into the canister on the bak of teh block
doood isnt this how it wrks?
A catch tank (or can) works just like a crankcase vent filter. It will bypass the connection between the crankcase and the air induction intake track. This will relieve pressure place against the valve train under engine load. But unlike a crankcase vent filter, the oil used by the valve train will not drip onto adjacent engine components. The oil catch tank will ‘catch’ the oil and moisture in the blow-by gas that cause carbon and sludge build-up in the intake system and the engine. This will keep your engine compartment clean, your performance maximized
[Modified by civura R, 11:14 AM 11/3/2002]
how does what you are saying take into account of what is happening with the PCV in the system involved?
somebody correct me here....but aren't we trying to filter out the oil that the engine would breathe because the PCV valve is plumbed directly into the intake manifold? Thus we have an additional can to do the work that the factory Honda one cannot adequately do or sometimes on the newer blocks where they have been deleted entirely?
I know the JDM guys hook it up very differently....I took a look at their setups and they plumb every avail. source into the can. The valve cover and the PCV goes into the catch can and they actually have to punch small holes so it vents while another tube leads to the bottom of the car where a sponge is attached and soaks up the oil instead of leaving it to dribble on the ground.
The tubes leading to the can are all laced with oil and are not clear at all. Dear God...it's late ....somebody tell me what I did (pictured above) is correct and explain why...and somebody explain why the JDM guys do it the way they do (on a race car albeit)
Brain hurts....Thank you Good nite....
somebody correct me here....but aren't we trying to filter out the oil that the engine would breathe because the PCV valve is plumbed directly into the intake manifold? Thus we have an additional can to do the work that the factory Honda one cannot adequately do or sometimes on the newer blocks where they have been deleted entirely?
I know the JDM guys hook it up very differently....I took a look at their setups and they plumb every avail. source into the can. The valve cover and the PCV goes into the catch can and they actually have to punch small holes so it vents while another tube leads to the bottom of the car where a sponge is attached and soaks up the oil instead of leaving it to dribble on the ground.
The tubes leading to the can are all laced with oil and are not clear at all. Dear God...it's late ....somebody tell me what I did (pictured above) is correct and explain why...and somebody explain why the JDM guys do it the way they do (on a race car albeit)
Brain hurts....Thank you Good nite....
In regards to the tube between the rubber air intake and the cam cover: the system is intended to have air from the rubber intake travel to the cam cover PERIOD. Oil should not be entering the intake system through this tube unless something is screwed up. AND the screw-up can include poorly designed aftermarket cold air/ram air intakes.
The catch can goes between the PCV and the cast intake intake manifold. The intent is to lower the amount of oil entering the plenum. The oil has the effect of increasing any detonation and a PROPERLY designed catch can (many aren't) will separate pout the oil. A catch can is basically a reservoir and if it doesn't have any filtering element, it won't separate out the oil to any great extent.
Make sense?
John
The catch can goes between the PCV and the cast intake intake manifold. The intent is to lower the amount of oil entering the plenum. The oil has the effect of increasing any detonation and a PROPERLY designed catch can (many aren't) will separate pout the oil. A catch can is basically a reservoir and if it doesn't have any filtering element, it won't separate out the oil to any great extent.
Make sense?
John
In regards to the tube between the rubber air intake and the cam cover: the system is intended to have air from the rubber intake travel to the cam cover PERIOD.
Essex: "Ar these guys wrong for mounting it off the valve cover then?"
Yes. They ar(e). Unless their rings are so bad the PCV is overwhelmed and there are no living mosquitos within 5 miles.
John
Yes. They ar(e). Unless their rings are so bad the PCV is overwhelmed and there are no living mosquitos within 5 miles.
John
Once again:
PCV valve -> catch can -> Intake manifold
If you connect it to the valve cover and intake, it does nothing but filter AIR.
PCV valve -> catch can -> Intake manifold
If you connect it to the valve cover and intake, it does nothing but filter AIR.
Once again:
PCV valve -> catch can -> Intake manifold
If you connect it to the valve cover and intake, it does nothing but filter AIR.
Not disputing your findings ... but the Greddy catch can instructions and diagrams shows hooking it up from the "valve cover" to the "air intake pipe" ... and i did have some oil come through ... not a lot though ...
PCV valve -> catch can -> Intake manifold
If you connect it to the valve cover and intake, it does nothing but filter AIR.
Not disputing your findings ... but the Greddy catch can instructions and diagrams shows hooking it up from the "valve cover" to the "air intake pipe" ... and i did have some oil come through ... not a lot though ...
Essex: "If thats all that tube does then why do those 2 race cars have a can attached to the tube coming from the valve cover? Why not just put a little filter on the valve cover?"
The air in the rubber intake tube going to the TB is already filtered so Honda only had to put on one big filter and if the system is properly designed there should be a positive air flow (pressure) going to the cam cover which would not exist with a tiny filter on the cam cover.
Not all motors are designed to work this way and it is not intuitive. Also the system can be screwed-up by placment/design of the spigot so that the air intake creates a vacuum in the small tube to the cam cover.
John
The air in the rubber intake tube going to the TB is already filtered so Honda only had to put on one big filter and if the system is properly designed there should be a positive air flow (pressure) going to the cam cover which would not exist with a tiny filter on the cam cover.
Not all motors are designed to work this way and it is not intuitive. Also the system can be screwed-up by placment/design of the spigot so that the air intake creates a vacuum in the small tube to the cam cover.
John
"Not disputing your findings ... but the Greddy catch can instructions and diagrams shows hooking it up from the "valve cover" to the "air intake pipe" ... and i did have some oil come through ... not a lot though ..."
Out of curiousity, were the instructions 'general' and meant to cover all vehicles or were Honda specific?
John
Out of curiousity, were the instructions 'general' and meant to cover all vehicles or were Honda specific?
John


