VTA breather hose routing..?
08 August 2007, 08:51 PM
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VTA breather hose routing..?
Those of you who run a VTA breather mod, where/how do you run the hoses under the car..?
I have two, 19mm from block and a 13mm T'd from both rocker covers and they run to just over the rear axle. At the moment they're secured with zip ties and a bit unsightly (even though nobody sees it under the car, lol)
. Already bloody melted one on the exhaust..!
Just wondered if anyone has any ideas..? I thought about using rigid piping or maybe trying to feed them through the chassis boxing..
I have two, 19mm from block and a 13mm T'd from both rocker covers and they run to just over the rear axle. At the moment they're secured with zip ties and a bit unsightly (even though nobody sees it under the car, lol)
. Already bloody melted one on the exhaust..! Just wondered if anyone has any ideas..? I thought about using rigid piping or maybe trying to feed them through the chassis boxing..
11 August 2007, 10:17 AM
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Hi Carl, 
Do you get much smell from those (particularly in traffic), as they don't go as far back as mine..?
Also, I take it those tapped holes were already in the box casing..?
Do you get much smell from those (particularly in traffic), as they don't go as far back as mine..?
Also, I take it those tapped holes were already in the box casing..?
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13 August 2007, 05:36 PM
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Strangely, neither have I, although if I stick my finger inside the end of the hose it does have residue in it, just not enough to drip..
13 August 2007, 08:27 PM
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Due to the tight emissions regs on modern cars, blow-by gases (oily residue from heads and crank case) are reintroduced into the intake, therefore lowering the effective octane rating of the fuel you're using.
This is particularly a problem with modded cars that are running higher boost, but also effects standard cars.
Take the intercooler off and run your finger or a clean piece of tissue paper around the inside and see what comes out..!
Basically the VTA mod is exactly what is says, the blow by gasses are vented to atmosphere (the oem inlets bunged off), usually by running hoses down under the car, hence the original question in this thread..
You can also use a catch can that intercepts the blow-by, but ultimately, unless this is also VTA you will still get, to some degree, oily residue in the intake..
Before anyone bangs on about the pollution, this is no different to running a full decat exhaust..
This is particularly a problem with modded cars that are running higher boost, but also effects standard cars.
Take the intercooler off and run your finger or a clean piece of tissue paper around the inside and see what comes out..!
Basically the VTA mod is exactly what is says, the blow by gasses are vented to atmosphere (the oem inlets bunged off), usually by running hoses down under the car, hence the original question in this thread..
You can also use a catch can that intercepts the blow-by, but ultimately, unless this is also VTA you will still get, to some degree, oily residue in the intake..
Before anyone bangs on about the pollution, this is no different to running a full decat exhaust..
13 August 2007, 09:16 PM
#17
there is one pipe on each side of the engine (crank case i think), next to the fuel rales on each side.
one that is just in front of the turbo, that goes down to the eninge. this is another breather.
you need to block the pipes in the inlet pipe (that goes from the maf sensor to the turbo)
and block the pvc valve that in on the back of the inlet manifold (under the tmic)
think thats the lot, but there is a good link as well
enjoy
https://www.scoobynet.com/general-te...k-fitting.html
one that is just in front of the turbo, that goes down to the eninge. this is another breather.
you need to block the pipes in the inlet pipe (that goes from the maf sensor to the turbo)
and block the pvc valve that in on the back of the inlet manifold (under the tmic)
think thats the lot, but there is a good link as well
enjoy
https://www.scoobynet.com/general-te...k-fitting.html
13 August 2007, 11:12 PM
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newage rocker cover hoses are connected (t'd) together by the black metal tubing that runs infront of and attached to the TMIC. If you trace this you'll find a hose that goes to turbo inlet pipe..
The crank breather is under the front of the ic nearest turbo. it 'y' branches from block to throttle body (PCV) and to inlet pipe (different point to rocker pipes).
As said, basically instead of going to inlet/throttle body they need extending away under car with new hose and any holes blanked off securely..
Try a search there's loads on it, some with pic's.
The crank breather is under the front of the ic nearest turbo. it 'y' branches from block to throttle body (PCV) and to inlet pipe (different point to rocker pipes).
As said, basically instead of going to inlet/throttle body they need extending away under car with new hose and any holes blanked off securely..
Try a search there's loads on it, some with pic's.
14 August 2007, 12:15 AM
#21
On track, including 1/4 miles you need a catch can if you run breathers to catch the vapours, otherwise you'll be dripping liquid onto the track, when you empty it its a mix of water and oil and smells.
Places like the pod, check very closely for liquid dropping on the start line.
Places like the pod, check very closely for liquid dropping on the start line.
14 August 2007, 02:58 AM
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I run two catch cans and have everything venting back into the stock breathers. Basically, the catch cans catch the residue and blow by. Catch can Inlet hose oily / dirty, outlet clear and clean. 
14 August 2007, 11:53 AM
#23
newage rocker cover hoses are connected (t'd) together by the black metal tubing that runs infront of and attached to the TMIC. If you trace this you'll find a hose that goes to turbo inlet pipe..
The crank breather is under the front of the ic nearest turbo. it 'y' branches from block to throttle body (PCV) and to inlet pipe (different point to rocker pipes).
As said, basically instead of going to inlet/throttle body they need extending away under car with new hose and any holes blanked off securely..
Try a search there's loads on it, some with pic's.
The crank breather is under the front of the ic nearest turbo. it 'y' branches from block to throttle body (PCV) and to inlet pipe (different point to rocker pipes).
As said, basically instead of going to inlet/throttle body they need extending away under car with new hose and any holes blanked off securely..
Try a search there's loads on it, some with pic's.
15 August 2007, 09:58 AM
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just a point regarding catch cans being plumbed back into the intake - yes no oil will be drawn into the engine, but the vapours are'nt oxygenated (and warm) which will still rob the car of power. Always best to VTA the breathers, ideally via a catch can
25 August 2007, 09:10 PM
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Really sorry about delay..
This is what you should start with:
Block breather, rocker breather and PCV valve bung (unseen):
Intake bung for rocker cover breathers:
Routing of rocker cover hose from 'T' pipes attached to front of IC:
What you should end up with:
IIRC, I used 19mm hose for block and 15mm for rockers, best measure the oem hoses to be sure. Used a 90° elbow on block breather (blue in pic) to prevent hose flattening..
HTH..
This is what you should start with:
Block breather, rocker breather and PCV valve bung (unseen):
Intake bung for rocker cover breathers:
Routing of rocker cover hose from 'T' pipes attached to front of IC:
What you should end up with:
IIRC, I used 19mm hose for block and 15mm for rockers, best measure the oem hoses to be sure. Used a 90° elbow on block breather (blue in pic) to prevent hose flattening..
HTH..