where do you plumb your catch tank into

Jan 8, 2007
2,958
1
Wiltshire
hm.....so if you are venting to intake than blowby fluids will be stuck in the catch can...but if u dont vent into the intake then u dont need catch can...all fluids can just drip out of the hose under the car

Plumbing back into the TIP largely defeats the object of having a catch tank in the first place. You don't want these fluids going into your intake; they're only routed back into the engine as standard for environmental purposes.

Depending on the catch tank you use (i.e. baffled or not) if you re-plumb back into the TIP you still risk recirculating this blow-by waste back into the engine - much better to vent to atmosphere THROUGH a catch tank.

If you vent straight to the atmosphere without a tank you'll be spilling oily sludge over the road/car. When using a catch tank you should only be venting fumes, not liquid. The tank is designed to catch and trap these fluids, with only fumes escaping.
 

p34ch3y

tastefully modified
Oct 17, 2005
2,879
1
cambs
Plumbing back into the TIP largely defeats the object of having a catch tank in the first place. You don't want these fluids going into your intake; they're only routed back into the engine as standard for environmental purposes.

Depending on the catch tank you use (i.e. baffled or not) if you re-plumb back into the TIP you still risk recirculating this blow-by waste back into the engine - much better to vent to atmosphere THROUGH a catch tank.

If you vent straight to the atmosphere without a tank you'll be spilling oily sludge over the road/car. When using a catch tank you should only be venting fumes, not liquid. The tank is designed to catch and trap these fluids, with only fumes escaping.

nice one robbieC i so could not be assed to explane all of that

if people read through the whole thread they will know exacly what to do and what is needed

i gess some people just want others to do all the work for them
 

tstrahonja

Active Member
Apr 12, 2008
541
2
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Originally Posted by Robbie C View Post
Plumbing back into the TIP largely defeats the object of having a catch tank in the first place. You don't want these fluids going into your intake; they're only routed back into the engine as standard for environmental purposes
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Well isnt the purpose of a catch tank to stop those fluids going back into the TIP?

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Originally Posted by Robbie C View Post
If you vent straight to the atmosphere without a tank you'll be spilling oily sludge over the road/car. When using a catch tank you should only be venting fumes, not liquid. The tank is designed to catch and trap these fluids, with only fumes escaping.
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Thats exactly what i said...i dont mind if occasionaly a drop or two of water or oil drops from vent hose to under my car...so in terms of removing oil from intake, turbo, IC, piping buying catch tank is a waste of money (if venting to atmo)...but if u are concerned about leaving oily droplets under your car then u put catch tank.
 
Jan 8, 2007
2,958
1
Wiltshire
------
Originally Posted by Robbie C View Post
Plumbing back into the TIP largely defeats the object of having a catch tank in the first place. You don't want these fluids going into your intake; they're only routed back into the engine as standard for environmental purposes
-------

Well isnt the purpose of a catch tank to stop those fluids going back into the TIP?

A proper catch tank yes, if baffled correctly. But why vent anything back into the TIP at all? Just vent the gases to the atmosphere.

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Originally Posted by Robbie C View Post
If you vent straight to the atmosphere without a tank you'll be spilling oily sludge over the road/car. When using a catch tank you should only be venting fumes, not liquid. The tank is designed to catch and trap these fluids, with only fumes escaping.
--------

Thats exactly what i said...i dont mind if occasionaly a drop or two of water or oil drops from vent hose to under my car...so in terms of removing oil from intake, turbo, IC, piping buying catch tank is a waste of money (if venting to atmo)...but if u are concerned about leaving oily droplets under your car then u put catch tank.

It's much better to have a catch tank installed so you can catch these fluids rather than let them drop out over the road...

I see your logic but it's missing the point
 

tstrahonja

Active Member
Apr 12, 2008
541
2
Thats what im saying all the time...
And, for me, the point of making this mod is to clean my pipes of oil...not to collect them in the catch tank...
Ive read all the posts here with understanding and my conclusion is that u can clean ur pipes without the catch tank only by removing PCV, black valve in the TIP and rerouting hoses to atmosphere..
Of course it is nice to have a catch can but it is not essential at all..
However it seems that some people here dont understand that and think that catch can is essential. (i dont mean you Robbie C)
 

p34ch3y

tastefully modified
Oct 17, 2005
2,879
1
cambs
well i can tell you that i know for a fact scince me AND philw have had a catch tank fitted we have not had any MAF issues scince one has been fitted
 

DAZTTC

Guest
Thats what im saying all the time...
And, for me, the point of making this mod is to clean my pipes of oil...not to collect them in the catch tank...
Ive read all the posts here with understanding and my conclusion is that u can clean ur pipes without the catch tank only by removing PCV, black valve in the TIP and rerouting hoses to atmosphere..
Of course it is nice to have a catch can but it is not essential at all..
However it seems that some people here dont understand that and think that catch can is essential. (i dont mean you Robbie C)

I think you have a very good point its just not environmentally friendly if thats your bag.:D

DAZ
 

dalegolf215

UNbanned
Jun 3, 2010
1,151
1
Rov'rum
I think you have a very good point its just not environmentally friendly if thats your bag.:D

DAZ

its not environmentally friendly at all to let the oil just vent or drip onto the road BUT how many of you with catch tanks fitted actually take the waste oil to recycling plant or does it end up down the drain?

also who has a decat fitted ?? its there to stop pollution but people still remove them its still pollution
just that you cant see it
 

Big_daddy

Going going gone.....
Oct 20, 2006
3,930
0
Brummy
Its was that time of year again.....

20110131_001.jpg


Need a bigger catch can.. lol
 

Big_daddy

Going going gone.....
Oct 20, 2006
3,930
0
Brummy
:blink: Hope u didnt wash it out in your kitchen sink lol

Dont worry used my neighbours :whistle:

Noticed it fills up quick in the cold weather...

Sort 4got that i had a catch can, hose in wheel arch were it vents from, the pipe frooze and collapsed so have get another one,
At least solved the mystery of were bird poo stains under my car were coming from lol :D
 

p34ch3y

tastefully modified
Oct 17, 2005
2,879
1
cambs
Dont worry used my neighbours :whistle:

Noticed it fills up quick in the cold weather...

Sort 4got that i had a catch can, hose in wheel arch were it vents from, the pipe frooze and collapsed so have get another one,
At least solved the mystery of were bird poo stains under my car were coming from lol :D

what pipe are you useing as i want to change mine
 

Big_daddy

Going going gone.....
Oct 20, 2006
3,930
0
Brummy
what pipe are you useing as i want to change mine

the one that goes in the catch can is stock plastic one, but the exit is a clear one that looks similer garden hose, but because it was short and only got up to the batter, i stuck big siliconbe hose to the end of, but that changed colour, harden and brittle, partly blocked too :think:
 

R4cup

Beef NO Burger
Jul 28, 2006
1,757
6
In the garage
Dont worry used my neighbours :whistle:

Noticed it fills up quick in the cold weather...

Sort 4got that i had a catch can, hose in wheel arch were it vents from, the pipe frooze and collapsed so have get another one,
At least solved the mystery of were bird poo stains under my car were coming from lol :D

:lol: let me know when your ready to do mine ;)
 
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