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Author Topic: THE home made catch can and charcoal canister mod  (Read 4362 times)

Offline paultownsend

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THE home made catch can and charcoal canister mod
« on: 18 July 2012, 19:29 »
Hello chaps.

This is my way of saving £100 on a posh catch can on my early AGU golf.  All i used were a few bolts, jubilee clips and 2m of 19mm hose.  it also catches the fumes from the tank.

It follows on from this thread

http://www.golfgtiforum.co.uk/index.php?topic=236501.0

and i suggest you read

http://www.golfgtiforum.co.uk/index.php?topic=222678.0

http://www.golfgtiforum.co.uk/index.php?topic=225699.0

these are both great threads. there are some other faq's on the interweb.

what i have basically done here is completely  separate the boost and PCV systems. although the can is breathing to air, it will not loose boost. if it does, then its through the rings and its f00ked!

as with other threads, you need to remove the pcv valve under the inlet manifold and block up the pipe attached to the inlet itself. i used a 30mm piece 0f 19mm hose from the block breather outlet to the metal block PCV pipe, and put a bolt and jubilee on the inlet manifold pipe.

picture time!



what i have done here is remove the hockey puck and blocked the TIP with a wine cork and mikalor clamp  :grin: this will be replaced when my forge 20mm bung arrived from the bay.



on the other side i took out the carbon canister, prised open the lid, and removed all the crap. i have just pulled out the solenoid and tucked it under the header tank, this has thrown up no fault codes after 100 miles.  of course, i blocked off the inlet on the throttle body. 
as you can see, i have re used the hockey puck valve. under this is 5cm of 19mm hose, bulked up with tape. this secures the valve in the canister.
the canister also has a handy pipe on the bottom that can be used as a drain plug!

and then....



i just ran 19mm pipe from the metal block breather pipe, round the bulkhead, and in the the newly used carbon catch canister.

as you can see, its looks almost OEM



now, at the moment it is breathing through the top of the canister. i have just made a small hole.
i am going to at a later date tap this  and put another pipe in there. this will be fed to the inner wing.

so, what do you think? have a saved you a few £££  :cool:
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Offline jamie1989

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Re: THE home made catch can and charcoal canister mod
« Reply #1 on: 18 July 2012, 20:00 »
Its a good cheap idea mate but catch can kit can be had for less than £50. I did it all via ebay.
 
IMO I think a catch can is the way to go, You still have the PCV valve in place which is prone to failure and the pipes under the inlet are all old an perished now so it makes sence to replace it all with the catch can system.

Still quite a good idea and very cheap but mk4s are getting old now and pipes will be perished and cause vacuum leaks everywhere.
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1.6-1.8t AGU K03s, Forge actuator, Forge 007p, turbo back exhuast, Ths front mount, Catch can, 5 piece silicone boost pipes and creation sports tip. Stage 2 atm 232bhp 270lbs. Waiting for custom mapping :-)

Offline paultownsend

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Re: THE home made catch can and charcoal canister mod
« Reply #2 on: 18 July 2012, 20:13 »
All the hoses have been replaced my friend. The pcv valve has been used purely because it makes a neat install. It blows both ways. I don't see the point in breathing back to the tip. As your reintroducing the PCV system in to the boost system. And with the eBay cans, they have no baffle so your still breathing in the fumes.
Plus iv saved £50  :rolleyes: while keeping an oem look
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Offline Dalo Harkin

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Re: THE home made catch can and charcoal canister mod
« Reply #3 on: 18 July 2012, 20:29 »
how are you still breathing in the fumes?

everything in the PCV went through to the TIP and got burnt (how its supposed to be)

removing the PCV system with a catch can, the tubes still go to the TIP and get burnt they just do go through the TB and gunk it up and you have replaced all the old pipes for new (oil resistant ones)
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline paultownsend

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Re: THE home made catch can and charcoal canister mod
« Reply #4 on: 18 July 2012, 20:48 »
sorry i meant the engine, not in to the cabin

the pcv is there for emission laws. just like cars are mapped for economy. do we really want that getting breathed in to the intake? as the TIP is blocked off, there will no longer be this crap in the tb, and lining the boost hoses. last week i removed the intercooler. so much oil in there. at the weekend i will vent the can to the inner wing, so no nasty fumes in the cabin.

if i could afford a draft 42 or saikou can i would. but the mrs is pestering me for a holiday!
« Last Edit: 18 July 2012, 20:50 by paultownsend »
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Offline Dalo Harkin

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Re: THE home made catch can and charcoal canister mod
« Reply #5 on: 18 July 2012, 21:12 »
I get your point but its done for a reason

ebay catch can £23 delivered you have all the rest by the looks of the photos  :wink:
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline paultownsend

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Re: THE home made catch can and charcoal canister mod
« Reply #6 on: 18 July 2012, 22:07 »
praise to that man!

il be honest, the local motor facor had none, and the puck fits so well. its goosed so it blows freely both ways!
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Offline DunnDeal12

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Re: THE home made catch can and charcoal canister mod
« Reply #7 on: 18 July 2012, 22:34 »
so how do you empty the charcoal canister?
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Offline paultownsend

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Re: THE home made catch can and charcoal canister mod
« Reply #8 on: 18 July 2012, 22:58 »
To empty the charcoal out you have to take a blade to the top. I glued it back up.
It has a very handy nozzle on the bottom. Iv putca hose on this with a plug. Simples to empty!
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Offline DunnDeal12

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Re: THE home made catch can and charcoal canister mod
« Reply #9 on: 18 July 2012, 23:23 »
is it just 1 tube comming from the crank case to canister?
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