VWDiesel.net The IDI, TDI, and mTDI source.
Engine Specific Info and Questions => IDI Engine => Topic started by: jseeley on April 19, 2011, 04:22:29 pm
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Just did mine; 3" ducting ->
(http://farm6.static.flickr.com/5267/5635678507_64fabe8e77_z.jpg)
I know there are a few threads around on the subject; Thought I could start a new one and get a bunch of pics posted so people can get some ideas. ;)
old vs new
(http://farm6.static.flickr.com/5310/5635676361_4503ce1a29.jpg)
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Might sound silly but I have been thinking of doing something similar to get the intake away from the engine. But I havent figured out what to do with the blowby hose (I think its called)?
What are you doing to delete/reroute that hose. Is it needed?
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dieselbalz, does your engine have excessive blowby? or drink its own oil? Any particular reason as to why you wish to delete it?
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I dont have any reason to delete it, and she has been steady on her oil levels since Ive had it. Just wanna run a custom intake and wanna know if its something I need to have.
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it needs to be vented for sure, doesn't necessarily have to make its way back in to the intake tract ;) an atmospheric dump down behind the block should work nicely for you.
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Thanks! Just a straight hose down or maybe something to catch blow by if any? Maybe as another means to keep an eye on health of the engine?
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Thanks! Just a straight hose down or maybe something to catch blow by if any? Maybe as another means to keep an eye on health of the engine?
You could put a can at the end of the vent to catch the oil and let the air go free. You'd have to dump it every now and then though.
Usually the breather goes to the intake manifold though, replacing the intake hose won't affect that.
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Usually the breather goes to the intake manifold though, replacing the intake hose won't affect that.
This; My breather/PCV setup is un-changed, this is just a larger diameter air intake tube. Seems to pull a little better at highway speeds. Got a little louder, deeper low end sound. Exhaust is next as I hear this is one of the best mods for the N/A's I have an 8V dual downpipe from a GTI... but I'm considering not using it as I'm afraid I may not be able to get the current exhaust manifold off without breaking some studs... :-\ so I may opt for a custom downpipe off the stock manifold (2.25")
Anyone else with pics of their modded intakes?
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Thanks! Just a straight hose down or maybe something to catch blow by if any? Maybe as another means to keep an eye on health of the engine?
why even modify it? does it need to be deleted for your particular style of intake to work? the breather was vented into the intake manifold so the blow by gasses could lubricate the intake valves..
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Not saying I need to delete it, just exploring options cause right now the cone sits right in front of the tb cover. I wanna plumb it way up front to get it away from the heat of the motor. Also considering a raintray set up.
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Not saying I need to delete it, just exploring options cause right now the cone sits right in front of the tb cover. I wanna plumb it way up front to get it away from the heat of the motor. Also considering a raintray set up.
trust me, i run a open breather.. i HATE it.. it really sucks in the summer, or when you wanna smoke a cig.. all those wonderful breather vapors wafting past your window..
only reason i dont vent it into my intake is :
1.) my turbo has mediocre oil seals, it oils my intake valves enough as it is.
2.) there is no where for me to easily hook up my CCV system to the intake..
i really wish i had a real CCV system that i didnt have to smell.. plus, the smoke from under the hood at stop lights and signs, is kinda gay..
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Oh my. I dont want it to smoke from under the hood. Would constantly screw with my head. I am sure its not difficult, probably a thread around here on it, to tap the new intake and keep it a closed system.
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the breather was vented into the intake manifold so the blow by gasses could lubricate the intake valves..
Never heard that theory before, what lubes the exhaust valves? ;D
I always thought the blowby went back into the engine so the toxic gasses would burn up and not harm this poor suffering planet........
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the breather was vented into the intake manifold so the blow by gasses could lubricate the intake valves..
Never heard that theory before, what lubes the exhaust valves? ;D
I always thought the blowby went back into the engine so the toxic gasses would burn up and not harm this poor suffering planet........
swear over my left teste! the blow by gasses are ved into the intake to lubricate the intake valves..
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I dunno about that, they were vented back to the intake(like they are on almost all cars for a very long time) because it is cleaner, and there is nothing for the stupid owner to clean/empty.
the valve guides are self lubricating bronze, no need for oil to lube them.
-Owen
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I dunno about that, they were vented back to the intake(like they are on almost all cars for a very long time) because it is cleaner, and there is nothing for the stupid owner to clean/empty.
the valve guides are self lubricating bronze, no need for oil to lube them.
-Owen
no, someone else has told me this too.. i really hope someone else chimes in with where they found that info.. im not smoking crack, ive heard about the VW CCV system lubing the valves before..
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its a common misconception, propagated mostly by the G60 folks.
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no dude, everyone who ive heard that from, is off this forum..
watch, nobody is gonna back me up on this one. now im gonna be standing here, with everyone lookin at me like im smokin crack..
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http://en.wikipedia.org/wiki/Crankcase_ventilation_system (http://en.wikipedia.org/wiki/Crankcase_ventilation_system)
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http://en.wikipedia.org/wiki/Crankcase_ventilation_system (http://en.wikipedia.org/wiki/Crankcase_ventilation_system)
im not talking about CCV systems in general..
im talking about the CCV system on a VW IDI Diesel.. ive heard from many reliable people that the oil mist in the blow by is to help lube the valves..
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About intake
I like it,but I always think that wire must be inside tube if it`s rubber,for vacum
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About intake
I like it,but I always think that wire must be inside tube if it`s rubber,for vacum
shop vac hose works great.. its the right size, and its made for vacuum..
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About intake
I like it,but I always think that wire must be inside tube if it`s rubber,for vacum
I used aircraft tubing; It is supported with wire on the inside.
http://www.aircraftspruce.com/menus/ap/ducting.html (http://www.aircraftspruce.com/menus/ap/ducting.html)
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I have heard from 2 different VOA mechanics and Dakotakid on this forum that VW designed the oil in the intake for an upper cylinder lube.
There you go ROR.
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no dude, everyone who ive heard that from, is off this forum..
watch, nobody is gonna back me up on this one. now im gonna be standing here, with everyone lookin at me like im smokin crack..
I think it actually says that in the 1.5L SAE paper. Yes, the CC vapours are vented to the intake to save planet earth, but a happy benefit (according to VW's engineers) is that it provides lubrication to the intake valves and upper cylinder walls.
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So the exhaust valves don't need lube but the intakes do?
The upper cylinder thing makes perfect sense.
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why even modify it? does it need to be deleted for your particular style of intake to work? the breather was vented into the intake manifold so the blow by gasses could lubricate the intake valves..
Now you're just making things up...
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why even modify it? does it need to be deleted for your particular style of intake to work? the breather was vented into the intake manifold so the blow by gasses could lubricate the intake valves..
Now you're just making things up...
i hope your being sarcastic? lol.
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Thats an ancient old wives tale invented by techs to get complaining car owners off their back about oil in the intake tract. Lube the valves... thats rich. ::) ;D
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Getting back to original concept here. I used metal dryer vent hose, 3 inch from the front of the air box on mine. I have the other not so great, NA 1.6 set up. The metal pipe is able to be formed into an oval that gently returns to a full 3 inch circle as it snakes over the alternator. At that point it attaches to a 4 inch to 3 inch reducer that I custom cut and filed in place on the left side of the radiator. That gives me 4 inch surface just behind the grill to a 2.5 inch oval at the box. Looking for that ram air pressure.
All .5 lbs of it.
Pipe held on with plastic pull ties. Looks good. but louder than dense plastic weenie tube. Thinking of a sound wrap on it, Maybe, between speaker box effect of intake box and megaphone style inlet it is a weird noise at idle. After leaving a light it is back to standard diesel buzz.
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Ok, if you dont believe it lubes the upper cylinders how about this: it is energy that is burned, and you are wasting it. Also, the small vac from the intake sucks out positive pressure. Vac pumps on ccv systems are PROVEN to increase power and efficiency.
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So the exhaust valves don't need lube but the intakes do?
The upper cylinder thing makes perfect sense.
exhaust valves wear at over twice the rate of intake valves, i would say a lot of that is due to heat. the main reason for routing the crank vent to the intake manifold is emmissions, some nasty *** comes out the ccv, i don't doubt that it also contributes to lubing valve, but i'm thinking it also contributes to carbon build up on valves and run aways.