MK6 GTI catch can

[Dzl_Dubba]

Hi guys

Anyone running a catch can for their Mk6? Is the install any different to the MK5 since its a different engine? Post pics if u can and ur experiences please.

Cheers

Goran

[ddre78]

Peronsally I think catch cans are a waste of time. I had an Suby WRX STi that was heavily worked and running high boost. After 12 months with a catch can.... nothing. Put your money into something else would be my advice.

[Transporter]

There are already threads on catch cans, not in Golf6 but they all work the same. Use the search function.

[jords86]

Forge Oil Catch Can for MK6 GTI

Has anyone got one on their MK6 GTI? Im after the correct part number as well as experiences. Does anyone have another brand catch can on a MK6 GTI only though? Out of the two Oz distributors which Forge in the USA told me to contact, one doesn't have info on the correct one for our cars(they said they are still waiting for it??) and the other hasn't replied after 2 emails and a couple of weeks waiting!

[peedman]

If you goto the forgemotorsport.co.uk site they have the correct one.

[johnvw]

Dear Jords86,
I am about to fit a 42DD Catch Can to my 2011 Golf Mk6 Gti. I believe the space is not a problem ( in front of the drivers light, over the alternator).
Unfortunatly no 'Africa' plate is available at this time, but the nasty oil vapours can be caught before entering the intake manifold.
Carformance is the Qld distributor and Greg is extremely helpful.
Google 42DD for product info, the ultimate CC is a very nice piece of equipment.
Best Regards
John

[sdhog2002]

Hi johnvw,
Could you please let us know how your install went. I have ordered a catch can from Greg for my MK6 (MY11.5) GTI. Looking in my engine bay I cannot see how I could fit the can behind either the driver's nor passenger lights. Thanks

[johnvw]

Dear sdhog2002,
Good to hear that you picked up the Ultimate CC. Good timing in regard to the installation. I have just spray painted the brackets and waiting for them to dry, before fitting the CC. I will take some photos and email them to you.
Basically I made a three small brackets, one wraps around the charcoal canister ( that 4inch square black looking thing just behind the drivers headlight ( I think it`s called the charcoal canister), the second bracket is fitted in front of the cannister and secured with an existing screw location, the third bracket slips under the metal cauling on top radiator near the drivers light. The configuration looks like a figure 9, where the bottom leg of the nine is slotted so as to accept two butterfly nuts which connect to the smaller bracket that came with the 42CC. The CC is physically mounted straight above the alternator.
I PLAN to remove the air tube ( that large plastic tube near the firewall ), cut the foil covered plastic hose that goes from the top rear of the camshaft cover to the side of the air tube. Join via a tee piece the 'cut' hose from the rear of the cam cover to the hose ( breather hose) that goes from the front of the cam cover to the intake manifold ( the INTAKE manifold will be disconnected and blocked off).
With these two hoses now teed off, run the outlet of the tee to the BOTTOM of the 42CC. The hose from the TOP of the 42CC will then run to the connector on the air tube ( large plastic tube near firewall).
I will run the hoses from the 42CC along the front of the engine and back towards the firewall. By removint the wing nuts the 42CC can then just be lifted out of the way and drained as required. ( AND IT WILL NOT BE IN THE WAY OF ANY MECHANICS FOR THE FUTURE).
PLEASE BE CAREFUL and confirm what you may be about to do, I am not a tech AND
After the paint dries I will fit the 42CC, at this time I have been NOT installed the CC, only with clamps to check clearances.
AND I may have a problem with the waterpump ( read threads in regard to WHISTLING GTI), so although the 42 CC will be fitted, the hoses at this time will not be.
I am not sure just how I may stand in regard to warranty ( I am confident that everything can be removed without too much trouble).
You may consider buying a second 'breather hose' ( front camshaft cover to intake manifold ) as a precaution and you will need these connectors anyway.
Sorry this has got away from me , the pictures will reveal all
Regards John

[sdhog2002]

Excellent. Thanks, John.
Look forward to the pics too. (I did send you a pm with a copy to Greg for his info too).
Sid

[Greg Roles]

I'm watching with great interest!!

I've just befriended a guy down the street with a brand new GTI, and you are right that compared to the R, the GTI, and TDI etc have VERY limited space. There are options to fit the can below the airbox, into the space behind the drivers foglight, but that kind of defeats the purpose of having the dipstick and a nice CNC lid! I have several bracket projects on the go at the moment, so might as well add one more, be very interested to see your solution John. Any chance of some pictures, as this will help us all no end....

As for catch cans being a waste of time, I actually agree, that is, if you don't intend to keep the car very long. Some cars have greater blowby problems than others, but what you will find is a majority of catch cans are just empty cans, or ones with the most basic plates inside, and they would indeed catch next to no blowby. One of the main reasons I took on 42DD as my first product line was the cans, and the fact they have a series of mechanical screens to help collect the blowby oil, something only a very few cans have.

Basically with a catch can, it's what's inside that counts.





I'm that much of a believer, that if anyone with a 42DD can from me finds they are collecting no oil, and we confirm it is plumbed in correctly, I'll offer a full refund and pay the return post, no question.

[Tim]

Ive installed a few catch cans now and I still think the easiest option is to relocate the charcoal canister to behind the wheel arch near the washer bottle. The only annoying part is that you have to extend the hard plastic line. We normally cut and shut it with some fuel hose. If you ever want to go back to stock its a matter of buying that new hose from a dealer which is only $30.

After doing the above you can just mount them the same way the boys in the US do.

[Greg Roles]

Now there is a smart man....

[ozmale]

Guys,

I would like to ad my 2c worth on the catch can issue.

The usefulness of catch cans on prior direct injection vehicles is probably questionable.

However with the new direct injection vehicles catch cans I think will become a necessity. As you may know on normal vehicles the positive crankcase ventilation system (PCV) causes excess (slightly pressurised) crankcase gases (water vapour and oil mix) to be sucked into the intake manifold to be burnt in the engine.
In a conventional fuel injected car a large proportion of this mix is washed away as the petrol which is injected into the intake manifold dilutes and washes this into the motor so it doesn't stick on the valves.

In direct injection vehicles, fuel is injected directly into the cylinder no fuel vapour flows over the intake valve. The PCV mixture being sucked through the intake hits the hot intake valve and starts to build up deposits almost immediately.
There are lots of photos and examples of this all over the net. It appears to some degree this was an unforeseen problem with direct injection vehicles.
If anyone knows someone with an SIDI Holden you will know that Holden are having serious technical problems with this build up on the valves some requiring de-coking before the warranty even runs out. This is why in almost every service the dealers pour large quantities of various chemicals through the intake to try to clean these deposits. Subaru are the leaders in this with a very effective foaming spray that is squirted into the intake while the engine is running. You can see the crap shoot out the exhaust.
In my opinion it is better to prevent this build up in the first place.

After only 5000 km I drained my catch can got almost a cup full of water oily mix. Without the catch can this cupful of gunk must go somewhere and its into the motor over the valves where it can stick.

I bought the 42DD catch can from Carformance as it was the best looking (had great reports on the net) and had a fitting kit for the Golf "R".



Chris

[sdhog2002]

Hi Tim,
Sorry, but you lost me. Do you have a picture of one of your installs? I just don't understand quite where you mean. My carbon canister is right next to the washer filler, in front of the wheel arch, attached to the engine mount. Cannot get behind the wheel arch as it is outside the engine bay. I also don't see anywhere behind its current position that it would be possible to fit the carbon canister. I must be missing something.
Sid

[Tim]

not the washer filler neck. The actual washer bottle. Its hidden way down low behind the front bumper. You cant see it properly until you pull back the wheel arch liner and/or undertray