MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Hurdy on July 30, 2009, 12:35:46 pm

Title: Why get a catch can?
Post by: Hurdy on July 30, 2009, 12:35:46 pm

FSI engine after 19k miles!!!!!! :scared: :surprised:

http://i10.photobucket.com/albums/a140/pippyrips/DSCN3441-1.jpg

http://www.clubgti.com/forum/showthread.php?t=189147

I'll be looking at mine with interest as it has 18k miles on it at the moment!

Title: Re: Why get a catch can?
Post by: SteveP on July 30, 2009, 01:33:41 pm

Dread to think what mine look like now with 43K on  :scared:

Probably a like "shutting the stable door after the horse has bolted" by me putting the BSH can on last week  :fighting2:

Title: Re: Why get a catch can?
Post by: MAT ED30 on July 30, 2009, 01:39:40 pm

Mines done same as u steve milage wise so should I worry  :scared: or do I just get the can put on ? Might get vwr to have a look at mine when I am down next

Title: Re: Why get a catch can?
Post by: Hurdy on July 30, 2009, 01:40:11 pm

Put the thankyou on this post for the info in the PM Steve :wink:

My engine will be swapped for a low mileage one in the next month or so, which means it'll get a good fettle and a catch can system fitted. :happy2:

Title: Re: Why get a catch can?
Post by: RedRobin on July 30, 2009, 01:47:47 pm

^^^^
And mine at 71k?

So, is there a thread here about how to check this yet please?

[Just seen Mat's post....Yep, it'll be on my list for VWR too :happy2:]

Title: Re: Why get a catch can?
Post by: SteveP on July 30, 2009, 01:53:56 pm

Quote from: Hurdy on July 30, 2009, 01:40:11 pm

Put the thankyou on this post for the info in the PM Steve :wink:

My engine will be swapped for a low mileage one in the next month or so, which means it'll get a good fettle and a catch can system fitted. :happy2:

No probs, you have another PM about the catch can's too  :happy2:

So what your saying is we should all go big turbo so we can swap the engine and know we have a nice clean set of valves  :laugh: :laugh:

Title: Re: Why get a catch can?
Post by: iainalpine on July 30, 2009, 01:56:53 pm

Think i will be joining you guys in this mod. Looks quite bad at the valves. This would end up showing signs of poor compression would it not?

Iain

Title: Re: Why get a catch can?
Post by: DanoGTI on July 30, 2009, 03:33:42 pm

Yeh, PippyRips has had some interesting times with his RS4. I know him from Scoobynet too (we seem to follow each other around from Scoobs, to Audi - but I crept off to you guys now!!!)


I'd read about his FSi findings before - quite shocking to be honest. All I can say is that at the moment, thank god for warranty.
2yrs time I might be looking at a catch can....

Dan  :happy2:

Title: Re: Why get a catch can?
Post by: Strat on July 30, 2009, 03:42:44 pm

Can someone explain this whole thing in english please!  :smiley:

Title: Re: Why get a catch can?
Post by: joesgti on July 30, 2009, 03:45:26 pm

Quote from: Strat on July 30, 2009, 03:42:44 pm

Can someone explain this whole thing in english please!  :smiley:

+1  :smiley:

Title: Re: Why get a catch can?
Post by: bacillus on July 30, 2009, 04:35:05 pm

In a nutshell, some oil vapour gets recirculated through your oem pcv back to the inlet valve port. Some of these vapours settle on the intake valves and, over time, the crud you see in the above pic builds up.

What a "normal recirculating" catch can does is condense most of these vapours and store them within the can itself thereby reducing the amount of vapour reaching your inlet valves.

The race type catch can goes one step further by venting any vapour to atmosphere so no vapour reaches the inlet valves. Whilst this sounds ideal vs the "normal recirculating" catch can, you will most likely fail your MOT emission test plus you may also get an oily smell in the car with a light oil coating in your engine bay with it installed.

hth