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Thread: Catch can...

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    Catch can...

    So had a go at sorting out the catch can today, it was in it at some point but the previous owner took it out, and sort of bodged what was left.... I've gone from this which was simply two hoses, one from oil filter and one frame head gasket to a t-piece with a wee filter on it!...





    To this...which has the catch can on the side of the battery, so comments welcome, not perfect by any stretch but better than what was there, did the piping and then realised that the 5v cover doesn't fit on very well. Comments welcome....



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    Dani_B19's Avatar
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    1. It'll stink the cabin out. 2 I reckon it'll piss oil residue out.
    Driving the most secretive S3 on ASN

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    quattrokid's Avatar
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    Why do you need if anyway ? We haven't got one on ours ?
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    Quote Originally Posted by Dani_B19 View Post
    1. It'll stink the cabin out. 2 I reckon it'll piss oil residue out.
    yeh I've read about the cabin getting smelly, I will get a better solution when I get some more piping and fixings.

    why do you think it will piss oil residue out? I thought that was the idea of the baffles in the can?

    @QK my PCV system had been deleted and bodged hence why it's like it was/is now.

    general question, do the guys that run these catch cans all have it venting to atmosphere and if so, are you all routing it rearwards along the brakes pipes? And have you got a wee filter on the end of the piping? Or are some venting just below engine, again with a filter on the end?

    or are most routing it back to to the TIP?

    ive read through the how to link on the PCV by the way. More wondering what most have done as their fix/solution?

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    Quote Originally Posted by Gmac View Post

    general question, do the guys that run these catch cans all have it venting to atmosphere and if so, are you all routing it rearwards along the brakes pipes? And have you got a wee filter on the end of the piping? Or are some venting just below engine, again with a filter on the end?
    When I get round to doing mine I will be venting to the atmosphere and there will not be a wee filter on the end as that would need changing as regularly as you'd empty the catch can- which to me defeats the point of venting to air as I'm mainly venting to air so I don't have to check the catch can or have to find somewhere to mount it.
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    Quote Originally Posted by kwistof View Post
    When I get round to doing mine I will be venting to the atmosphere and there will not be a wee filter on the end as that would need changing as regularly as you'd empty the catch can- which to me defeats the point of venting to air as I'm mainly venting to air so I don't have to check the catch can or have to find somewhere to mount it.
    So if you are venting to air, do you mean that there will be a pipe running off the catch can with an open end? And where are you planning running the pipe?

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    kwistof's Avatar
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    Quote Originally Posted by Gmac View Post
    So if you are venting to air, do you mean that there will be a pipe running off the catch can with an open end? And where are you planning running the pipe?
    I won't be using a catch can at all fella....I will just vent it straight to air using silicone hoses, a T piece and a bung in the TIP IIRC.
    2000 S3 APY

    18" BBS RSII with Michelin PS3s, 20mm H&R adapters, Relentless 3" DP and Sports cat, B5 V1 induction kit, cone filter+heat shield, Forge 007P, Awesome GTI SMF, AP coilovers, Facelift rear lights, Full Powerflex poly bush kit, R32 Rear ARB, SAI delete, N249 by-pass, Upgraded Engine mounts with Polytek, Stage 1 CC at Badger 5.

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    Catch can...

    Quote Originally Posted by kwistof View Post
    I won't be using a catch can at all fella....I will just vent it straight to air using silicone hoses, a T piece and a bung in the TIP IIRC.
    I just love riding on peoples oil residue left on the road on my motorbike... Cheers
    hoffmanvp3 likes this.

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    Quote Originally Posted by kwistof View Post
    I won't be using a catch can at all fella....I will just vent it straight to air using silicone hoses, a T piece and a bung in the TIP IIRC.
    Hmm ok.

    What set up are others using who are venting?

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    I have the same set up as you at the moment, I don't really notice the smell in the cabin unless I'm stuck in traffic so it is staying like it at the moment. I do plan to run a pipe under the car at some point though. I do get a small amount of residue out of the filter, after 3000 miles i can see a few specks of oil on the can
    2001 1.8T Quattro Sport 89k covered ARY engine.
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    Soon to be done: SAI delete, Install the toyosport FMIC i have kicking about in my living room

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    Quote Originally Posted by Lavis89 View Post
    I have the same set up as you at the moment, I don't really notice the smell in the cabin unless I'm stuck in traffic so it is staying like it at the moment. I do plan to run a pipe under the car at some point though. I do get a small amount of residue out of the filter, after 3000 miles i can see a few specks of oil on the can
    Ah ok, that's good to hear! I very rarely sit in traffic, mostly a and B road commute in no traffic about 25 mins.

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    Smell is shocking. Because I used that can and its crap but also depending how old the car is, miles etc, it maybe a heavy breather and piss out the filter, pressure dependent. I just wouldnt vent under the engine bay put it that way. Mine is vented under the rear wheels.
    Driving the most secretive S3 on ASN

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    My can is completely different, was a hand made one with 19mm inlets, dont know if that will make much difference but worth running it for a few weeks and seeing what you think, if it stinks then order a few meters of hose and run it under the car.
    2001 1.8T Quattro Sport 89k covered ARY engine.
    Remapped at Badger 5, 213bhp - 235lb/ft torque.
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    Soon to be done: SAI delete, Install the toyosport FMIC i have kicking about in my living room

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    And if running it to the rear of the car what are folks putting on the end of the pipe, and are you guys using 19mm all the way rear or reducing it before it goes back?

    @dani... Thanks, appreciate the advice, sounds like I need to keep a good eye on the can and contents then! Regular empties, til I sort out the routing.

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    Quote Originally Posted by Gmac View Post
    And if running it to the rear of the car what are folks putting on the end of the pipe, and are you guys using 19mm all the way rear or reducing it before it goes back
    I did this at the weekend, have done the same as kwistof says, no can and have run the hose under the car, venting at the back wheels, used 19mm all the way. Hope this helps?
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    JudderMan's Avatar
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    Can those who have emptied their catch can give an example of what comes out? Emptied mine the other day and not sure if it's right or not.
    2000 Audi A3 1.8T Sport AUM K03S|Second owner|Forge 007p|CM TIP|Yellow Dogbone|Pipercross panel
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    Quote Originally Posted by WorkInProgress View Post
    I did this at the weekend, have done the same as kwistof says, no can and have run the hose under the car, venting at the back wheels, used 19mm all the way. Hope this helps?
    Anything on the end of the pipe? Ie a wee filter or just an open end?

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    Quote Originally Posted by JudderMan View Post
    Can those who have emptied their catch can give an example of what comes out? Emptied mine the other day and not sure if it's right or not.
    When I empty mine I get a milky browny fluid that stinks like dirty oil
    2001 1.8T Quattro Sport 89k covered ARY engine.
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    Soon to be done: SAI delete, Install the toyosport FMIC i have kicking about in my living room

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    i was under the impression that these pipes were pressurized and venting them will introduce a boost leak?

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    Thanks lavis, mine was like liquid gold and stunk of petrolly-oil and there was a lot. No milkiness tho.
    2000 Audi A3 1.8T Sport AUM K03S|Second owner|Forge 007p|CM TIP|Yellow Dogbone|Pipercross panel
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    When emptying the catch tank I always wear disposable gloves the smell lingers on your hands for days after it's nasty lol

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    Yeah I found that out....
    2000 Audi A3 1.8T Sport AUM K03S|Second owner|Forge 007p|CM TIP|Yellow Dogbone|Pipercross panel
    To Fit - Decat then Mapping WANTED: Audi A4 B7 or MK5 Golf GTi (manual)(Want to Buy December 2014 so Keep Me in Mind)

 

 

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