Forge CatchTank System - Review....

[RedRobin]

^^^^
@ Sean aka T_T:

I think it's extremely good that you add what is either your opinion or your expert knowledge to a thread such as this. However, I'll leave it to others if they want to debate or discuss the details further on this particular subject.

That's fair enough - but in your original post, there are some fundament technical errors - which ought to be highlighted.

....No problem  . Some of what I have posted is info I have gathered and may indeed either have errors or may not be in agreement with you.

[RedRobin]

Why is there only 2 rubber blanks provided when there are 3 nipples?

....I'm using 2 of the 3 nipples, so 3 blanks aren't needed:

[kevinm]

....I'm using 2 of the 3 nipples, so 3 blanks aren't needed:

But I wont be using any. I just got my catch can yesterday and i only got 2 blanks...

[RedRobin]

....I'm using 2 of the 3 nipples, so 3 blanks aren't needed:

But I wont be using any. I just got my catch can yesterday and i only got 2 blanks...

....Give Forge a call: 01452 380999 (John Withers) and they'll post you what you need.

[HALL1E123]

Hi Guys,
Just been looking at this, can anyone tell me how this system releaves pressure without it venting to atmosphere but also losing the return to the inlet manifold? Bit confused as to were it goes obviously you constantly have blow by even more so as revs increase so does this not just pressurise the crank case/rocker cover?
Sorry if im just having a moment 

Regards,
James.

[RedRobin]

.
Checked my fluid levels as my car has been in her batcave for a week and noticed the catch tank was up to max level:



So I duly emptied the tank - Easy, even for me. Total measured 10 fl.oz / 0.6 pint of gunky fluid:



^ I best warn my daughter it's not a gravy mix or special coffee.

In the cold weather, although my batcave didn't drop below 2C, the amount of gunk suddenly increased.

[Mackie1]

Great review Robin. I have been debating as to whether or not to buy a catch tank system for some time and if so, which one would i go for? Your review has finally convinced me to go for the Forge item. I have seen the BSH tanks and fittings up close and on a friends car but quite frankly i'm of the opinion that in this case it may be worth paying that wee bit extra for a much more highly engineered and much superior product. Thanks. 

[RedRobin]

Hi Guys,
Just been looking at this, can anyone tell me how this system releaves pressure without it venting to atmosphere but also losing the return to the inlet manifold? Bit confused as to were it goes obviously you constantly have blow by even more so as revs increase so does this not just pressurise the crank case/rocker cover?
Sorry if im just having a moment 

Regards,
James.

....Sorry not to try to answer this earlier, James. Does this help explain?:

[HALL1E123]

Hi Robin, Thanks for your reply.
Maybe ive just got this twisted but from what i can see the diagram show's how a recirculating system with a catch can works for a naturally aspirated car were the engine breathes into the airbox, in this system the gasses from the head/block still get passed into the inlet to be expelled minus any oil/carbon thanks to the catch can. Obviously this is not how the system works on our golfs due to the boost pressure in the inlet manifold, hence the reason for the 'PCV' system in the first place. Obviously the pressure inside the Block and head are higher than atmospheric due to blow-by, at the moment when this pressure is greater than in the inet manifold the 'PCV' alows the pressure to bleed of into the engine along with any oil/carbon.

By removing the 'PCV' and fitting a closed system such as the forge catch can the block breathes to the head and both breather lines from the head go to the catch can, The can does not vent to atmosphere so there is no way for the pressure to be releaved?

Hope this makes sense, it does in my head. 

[RedRobin]

^^^^
Sorry I'm not so up to speed with how it works (except I know that it does and that it's been thoroughly tested by Forge on the turbo'd 2.0T FSI engine), but does this hose to the manifold cap help your question?



Another pic which might inform:

[HALL1E123]

No problem robin, thanks anyway. The two lines from the blank on the inlet manifold arnt to do with the breather system there take off's for boost pressure, Guessing you've got a boost gauge and an aftermarket recirc valve.

[RedRobin]

No problem robin, thanks anyway. The two lines from the blank on the inlet manifold arnt to do with the breather system there take off's for boost pressure, Guessing you've got a boost gauge and an aftermarket recirc valve.

....Indeed I do have both a boost gauge and a Forge recirc valve.

[RedRobin]

.
Coming up to 92,000 miles and my catch tank has filled up with another 10oz of gunk. I'm expecting it to lessen as the weather gets warmer but it's very very easy remove the tank and empty. I empty it into a plastic 2pint milk bottle but can anyone advise me please where best to dispose of that - The river 100yds away wouldn't be good for wildlife.

[chungster]

local refuse disposal centre? normally have a tank there for used oil and stuff (for those who do DIY oil changes etc)

[theo]

Fitted mine today to replace my BSH System. Will see how this compares!