A new idea for PCV
hi all,
Quite new on here but to keep it brief, what do you guys think of this idea for getting rid of the crankcase pressure http://i1282.photobucket.com/albums/...psc5c5ea6a.jpg I am currently running a 2.2 ecotec with following mods B207 with 2.2 crank, forged pistons and rods stage 2 LSJ cams,lightened flywheel and balancer delete, home build with vocky input on Dutch ECU software m62 3.1 pulley ported head, now also putting dbilas springs in, 630cc injectors This month I will soon be adding a Harrop and LS4 Tb and 3" exhaust but would like to get your thoughts on the Pcv system idea before I do the upgrades as I'm currently getting a lot of oily deposits in my intake system and supercharger and probably the intake laminovas are covered Cheers and look forward to hearing thoughts |
My buddy has a setup similar to this on his mazdaspeed6. Do you have a cat?
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No CAT essentially a trackday car
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Originally Posted by Slowbalt2000
(Post 7466800)
My buddy has a setup similar to this on his mazdaspeed6. Do you have a cat?
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its been done
summit racing sells a kit for it "Moroso Crankcase Evacuation Systems 25900" http://www.summitracing.com/parts/mor-25900 |
Works well if setup properly.... but for the line going to the catch can, were you planning on putting a fitting on your oil pan? If so, I wouldn't recommend that. I would go off the nipple on the back of the VC orrrrrr run one of those oil cap fittings
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exhaust evacuation of blow by gasses. as Axletherod05 says, has been done. Not that successfully in my experience. The problem with any VTA system that you are creating, is that you have to tune around what is basically a massive air leak. You are not drawing any vacuum because you are venting the rocker cover to the air. You would have to make a few holes some place to follow your idea in the drawing, but why dont you try it and see how it works for you? Let us know how it works out.
PS you want vacuum not pressure in the crankcase. Makes more power that way. |
Thanks for all your replies
My thinking was that because of the vacuum from the exhaust it would automatically pull air in from the cam cover to replace what is being pulled out In effect you are creating a motion of fresh air which is dragging all the crank gasses out almost straight away So giving the engine fresh air when ever air is pulled out creating a open system rather than sealed oem one. Tuning around this is not a issue |
Originally Posted by TStone
(Post 7467060)
Works well if setup properly.... but for the line going to the catch can, were you planning on putting a fitting on your oil pan? If so, I wouldn't recommend that. I would go off the nipple on the back of the VC orrrrrr run one of those oil cap fittings
But as the crankcase gasses in theory are not building up in the system I'm not expecting much oil to get to the catch tank |
Watch this space I'm going to give it a go
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i tried something similar on mine; gutted the valve cover, tapped a new hole and plugged the other one, and ran the tube right to the exhaust post cat at a 30ish degree angle. we were hoping to increase horsepower this way. it didn't work well; i had a funky idle but that could have been related to something else. but yea it didn't really pull anything through.
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I've read it's got to be 43-45 degrees to work
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oh. or whatever angle it was i forget but pretty sure we had it right haha
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all you need to do is to run a -10 from a vent on the valve cover to a good air/oil seperator then a -10 from the air/oil seperator to the air intake
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Originally Posted by mrbelvedere
(Post 7470604)
all you need to do is to run a -10 from a vent on the valve cover to a good air/oil seperator then a -10 from the air/oil seperator to the air intake
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nothing that works makes sense to you and -10 isent that expensive
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Wouldent speeding up and slowing down air flow help separation ?
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Originally Posted by Ukchilll
(Post 7466789)
hi all,
Quite new on here but to keep it brief, what do you guys think of this idea for getting rid of the crankcase pressure http://i1282.photobucket.com/albums/...psc5c5ea6a.jpg I am currently running a 2.2 ecotec with following mods B207 with 2.2 crank, forged pistons and rods stage 2 LSJ cams,lightened flywheel and balancer delete, home build with vocky input on Dutch ECU software m62 3.1 pulley ported head, now also putting dbilas springs in, 630cc injectors This month I will soon be adding a Harrop and LS4 Tb and 3" exhaust but would like to get your thoughts on the Pcv system idea before I do the upgrades as I'm currently getting a lot of oily deposits in my intake system and supercharger and probably the intake laminovas are covered Cheers and look forward to hearing thoughts
Originally Posted by Powell Race Parts
(Post 7467064)
exhaust evacuation of blow by gasses. as Axletherod05 says, has been done. Not that successfully in my experience. The problem with any VTA system that you are creating, is that you have to tune around what is basically a massive air leak. You are not drawing any vacuum because you are venting the rocker cover to the air. You would have to make a few holes some place to follow your idea in the drawing, but why dont you try it and see how it works for you? Let us know how it works out.
PS you want vacuum not pressure in the crankcase. Makes more power that way.
Originally Posted by mrbelvedere
(Post 7470604)
all you need to do is to run a -10 from a vent on the valve cover to a good air/oil seperator then a -10 from the air/oil seperator to the air intake
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