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Guide - How to fit a catch can and simplify the PCV system

Discussion in 'A3/S3 Forum (8L Chassis)' started by Westy, Apr 20, 2011.

  1. AFDanHef
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    AFDanHef Member

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    [Jan 27, 2013]
    I don't know what happened?? The thread was there a couple of days ago. I didn't delete it. Is there any moderator on here that deleted it for some reason?
  2. AFDanHef
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    AFDanHef Member

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    [Jan 29, 2013]
    Soooo .... I don't know what happened to the Group Buy thread but it's gone now. I'm sorry to the couple of members that were interested but I'm ready to buy now and not have to wait to gather a group of interested people. I'm not going to repost the group buy but I will forward the emails to someone if they want to pick it up and go with it.
  3. limbo118118
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    limbo118118 LORD

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    [Feb 1, 2013]
    what do people do who just put a filter on the rocker cover breather like this? im tempted to do it, to try an clean up my bay an remove as much as possible :/ could you just block of the oil breather on the block? plus i know some rocker covers dont even have the breathers...

    [​IMG]
  4. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Feb 2, 2013]
    You'll just end up with a fuel smell inside the car. I started off with a filter and moved to a great big long hose to get those fumes to the back of the car.
  5. lovemelongtime
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    lovemelongtime Member

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    [Feb 5, 2013]
    On the website for Saikou Michi catch tanks Saikou Michi Co. 2013 there seems to quite a few options ranging for $60 plus, which catch can is best. I was looking at the S1-OCC $85 + P&P, what do you think?
  6. LSL
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    LSL Luke

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    [Feb 6, 2013]
    Does anyone know what the ID of the hockey puck to TIP connection is? ARY with 70mm MAF.

    Will save me having to take it all off then fit it again to go buy something to plug it with :laugh:
  7. IrishDave
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    IrishDave Active Member

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    [Feb 14, 2013]
  8. s3clarke
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    s3clarke Money grabbing s3!

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    [Feb 14, 2013]
    all the catch tanks I can find on the bay are only 15mm inlet/outlet :/ can somebody point me in the right direction? cheers.
  9. LSL
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    LSL Luke

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    [Feb 14, 2013]
    I used a 15mm can and 15mm hose up to the t-piece, works fine.
  10. s3clarke
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    s3clarke Money grabbing s3!

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    [Feb 14, 2013]
    Cheers pal, have you used some kind of 19mm to 15mm reducer then for the t piece?
    Last edited: Feb 14, 2013
  11. LSL
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    LSL Luke

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    [Feb 14, 2013]
    I had bought an adapter but turned out the 15mm hose would stretch over the 19mm t-piece, so I just did that as it's neater and less connections to go wrong!
  12. A3-Lee
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    A3-Lee Active Member

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    [Feb 14, 2013]
    I have a 15mm catch can on mine and that's fine grae
  13. s3clarke
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    s3clarke Money grabbing s3!

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    [Feb 14, 2013]
    i'll look into it then when I change my TIP, probably not a bad idea to do it all at the same time. Cheers guys
  14. Pabl0
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    Pabl0 Member

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    [Feb 17, 2013]
    Ahem... Bored of waiting for the can to arrive so improvised form now, will pick up some synthetic wire wool tomorrow.

    [​IMG]


    Great guide Westy, very easy and worthwhile.
  15. Vwdan80
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    Vwdan80 Member

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    [Feb 19, 2013]
    i'm gonna be fitting a catch can soon (think original piping is starting to split) and just want to confirm that a one way valve on the servo pipe is not need for an s3?
    Dan
  16. vrbob
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    vrbob Thats no Moon, Thats a space station!

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    [Feb 19, 2013]
    Its already got one you are correct :)
  17. Gops
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    Gops 6th gear @7000rpm

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    [Mar 3, 2013]
    I've vented it to the rear of the car but sometimes I get a wiff of what seems like plastic burning or something, it's not all the time but mostly when I stop.. Anyone else had this?
  18. rhubarb4
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    rhubarb4 Certified Jardo Slayer

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    [Mar 4, 2013]

    What can have you fitted Gops and did you use oil grade hose, as my setup Iv never had a whiff of anything really.
  19. Gops
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    Gops 6th gear @7000rpm

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    [Mar 4, 2013]
    Yeah all oil grade hosed. Fitted the same can as prawn from eBay. Not quite sure what it is tbh. I need to have a proper look
  20. S3 Rav
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    S3 Rav Well-Known Member

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    [Mar 4, 2013]
    Gops make sure you iron out all the problems before I let you loose on mine lol!
  21. carld
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    carld Member

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    [Mar 17, 2013]
    Would doing this without a catch can And venting to the atmos cause any smoking issues on idle? Getting abit of smoke that smells of oil coming out my exhaust. A local garage think its down to the pcv delete
  22. harvey01
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    harvey01 Member

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    [Apr 28, 2013]
    im going to remove all the **** pipe and come of the oil filter pipe in to a tee the of the rocker cover also in to the tee the down to the hockey puck and iver into the tip or down under the car as i cant be arsed with the tank side of things
  23. s3gazz
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    s3gazz Well-Known Member

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    [Apr 28, 2013]
    Hi guys carnt seem to find the black pipe on eBay that u all use the oil graded one same as westys iv got blue at min and its changed colour can u help tar
  24. superkarl
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    superkarl MAN OF STEEL

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  25. Gops
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    Gops 6th gear @7000rpm

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    [Apr 29, 2013]
    I figured out what it was.. I cleaned the can with some solvent, I guess it didn't all come out so it was that which smelt! Never had a whiff off anything again! Vents to the atmosphere well so all good :)
  26. s3gazz
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    s3gazz Well-Known Member

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    [Apr 29, 2013]
    Thanks Karl pal
  27. harvey01
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    harvey01 Member

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    [May 12, 2013]
    has anyone just run the breather pipes into one and run it under the car ?
  28. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [May 12, 2013]
    They have done but if you took it on track you would get crucified by the other track users... on the road its the motorcyclists that will suffer...

    I am sure you don't need me to explain why :)

    <tuffty/>
    vfr800 likes this.
  29. harvey01
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    harvey01 Member

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    [May 12, 2013]
    i ssee mate :salute:
  30. Adam Davis
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    Adam Davis Member

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    [Jun 2, 2013]
    Anyone else not see the issue when venting to tip, i have been reading up on it and cant seem to find a definitive answer. Off boost the standard setup vents through the pcv valve and to the inlet mani, on boost through the hockey puck. But on the simplified setup it has no way of venting off boost if routed to the hockey puck, only when on boost. It needs to be vented to atmosphere. Unless it runs through the small bypass in the hockey puck??
  31. IrishDave
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    IrishDave Active Member

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    [Jun 20, 2013]
    Quick question as I will be fitting mine soon. When you remove the pipe connecting to the brake booster and blank the pipe to the inlet mani. Could you not run a hose from the inlet mani to the brake booster therefore retaining pretty much the standard system or do I have it all backwards.
  32. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 20, 2013]
    Just showing off but i've gone from complicated to simplified back to complicated lol

    [​IMG]
    [​IMG]
  33. Tim_Attard
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    Tim_Attard Active Member

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    [Jun 20, 2013]
    that looks nice andrew u show off lol, whats the 4 outlets for? wouldnt you only need 2?
  34. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 20, 2013]
    i've added another 2 outlets to the cam cover
  35. Tim_Attard
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    Tim_Attard Active Member

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    [Jun 20, 2013]
    more pics show off ;)
  36. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Jun 20, 2013]
    Care to explain what you're up to there Andrew?
  37. IrishDave
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    IrishDave Active Member

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    [Jun 20, 2013]
    Can anyone answer my question above.
  38. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Jun 20, 2013]
    I'm not 100% sure what you mean in your question Dave.

    Just stick to the guide as its tried and tested. The less hose the better in my opinion.
  39. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Jun 20, 2013]
    I didn't like the stuff on the market. Also running mega boost you do get more than normal blow by so more pressure in the crank case, if you have more outlets in the crank case you have less pressure
    Westy likes this.
  40. Tim_Attard
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    Tim_Attard Active Member

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    [Jun 20, 2013]
    think he wants to keep the brake booster connected, you can either blank it off or use a single bit of hose, if you have an aum then its seperate to the pcv anyway so mines still connected tbh makes no diffrence (could be wrong please correct me)

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