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Home > Beginners Tech > Oil Catch Tanks and Engine Breathers

ShoppingTub

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47 Posts
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I've been looking at getting this http://www.swiftune.com/Product/849/swiftu...catch-tank.aspx for my turbo after doing a search about catch tanks and reading that they are generally a good idea now my question is how do you fit them as thats what i cant find out, just after where to attach the pipe on the engine and if i need to put anything on the outlet

I know i could save my self 90 odd quid and make one but i cant fabricate anything to save my life, if i could i wouldnt work in aquatics shop selling marine fish

second one is a bit of beginners question about breathers for the engine, i've never fitted any to my previous minis and was wondering how many i can fit to an engine and where abouts they all go

cheers all


george91

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As far as i'm aware there more generally used on high revving engines. there used with breathing setups that breathe the rocker cover, timing cover and crank case. i'm not sure how effective this would be on a turbo engine but no doubt there are people on here with one. (and more info about them)

If you are sure you want one, you don't have to have a swifty one, there are loads about in all shapes and sizes and prices so have a look about.

Edited by george91 on 25th Jan, 2011.


DVSMNI

62 Posts
Member #: 3668
Advanced Member

NEW ZEALAND - moving to Australia

i use a oil catch can on my evo, so y not use one on ya turbo mini?
does the same job keeping oil from out of ur engine bay doesnt mater what shape it is as long as its size is relitive to your engine eg:

1L can - 1000cc engine
1.3L can - 1275cc engine

and you can put it where ever you want just means you run the hoses off your breather to the can, so if u have 3 beathers you will have 3 hoses entering the can, and i run a small filter on the top can. hope this helps a little.

1966 MK1 1034CC TURBO MINI


stevieturbo

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Northern Ireland

Looks like a tidy job.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

the A series engine likes to breath well, especially a forced induction one, *Yes* *wink*

a breather from the timing chain cover,one from the rocker cover and one from the clutch housing these all need Teeing in and to that tank you mentioned, positioned well under the bonet if you have room ? or under the wing well up,

have a look on e bay you can usuall drop on, or PM jimster his friend Endaf Owens makes them and are top quality.............






Ben H

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3329 Posts
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Melton Mowbray, Pie Country

On 24th Jan, 2011 DVSMNI said:

1L can - 1000cc engine
1.3L can - 1275cc engine


I have never heard that before, what is the reasoning behind it? The MSA just requires a 1L tank, the thinking being that if the engine shits its biscuits the catch tank will catch the oil, to a certain extent.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.


DVSMNI

62 Posts
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NEW ZEALAND - moving to Australia

to behonest im not to sure, its something to do with our motorsports here in new zealand, as i went to enter a track day and they said my catch tank was to small for size of engine, as i was using my evo being a 4g63T 2L and since i was told that i just went with what the offical said. :) must be differnt in england im sure theres a reason for it ....

1966 MK1 1034CC TURBO MINI


Ben H

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Melton Mowbray, Pie Country

imaging you had an 8 litre V8, that would be a big catch tank.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.


DVSMNI

62 Posts
Member #: 3668
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NEW ZEALAND - moving to Australia

just found this ... http://www.mnz.co.nz/download/Sports_Produ...Regualtions.pdf

1966 MK1 1034CC TURBO MINI


Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

well thats bollocks all help lol

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



DVSMNI

62 Posts
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NEW ZEALAND - moving to Australia

haha woops my bad there was a pice in there about the sizing of catch tanks... sorry ill try find it and post just that.

1966 MK1 1034CC TURBO MINI


stevieturbo

3591 Posts
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Northern Ireland



On 25th Jan, 2011 Ben H said:
imaging you had an 8 litre V8, that would be a big catch tank.


Not really. The bigger the catch tank the longer it can be left before emptying. The bigger it is, also depending on design, the better it can be at separating oil/air products

SO size can help, design is far more important.

Ideally fit a tank/system with a return back to the sump. That way it pretty much needs zero maintenance, as any deposits get returned back to the sump.

But if the system as proper oil/air separators, then there will be minimal deposits left in the tank.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


Ben H

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Melton Mowbray, Pie Country

this was just in reference to the 'rule of thumb' quoted above. it would plainly be rediculus to have an 8L tank. And as for longer between emptying I am not sure I would like 8L of oil sat in my car doing nothing.

On 26th Jan, 2011 stevieturbo said:


On 25th Jan, 2011 Ben H said:
imaging you had an 8 litre V8, that would be a big catch tank.


Not really. The bigger the catch tank the longer it can be left before emptying. The bigger it is, also depending on design, the better it can be at separating oil/air products

SO size can help, design is far more important.

Ideally fit a tank/system with a return back to the sump. That way it pretty much needs zero maintenance, as any deposits get returned back to the sump.

But if the system as proper oil/air separators, then there will be minimal deposits left in the tank.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.


stevieturbo

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Northern Ireland



On 26th Jan, 2011 Ben H said:
this was just in reference to the 'rule of thumb' quoted above. it would plainly be rediculus to have an 8L tank. And as for longer between emptying I am not sure I would like 8L of oil sat in my car doing nothing.


If I had 8 litres of any oil in a catch tank on any engine I'd be worried lol Especially when there is only 5 in the sump to start with..

Point is, it doesnt actually need to be very big at all if it is designed properly.
Most of the crap on egay doesnt have any ability to separate the oil/air. In fact, even some branded tanks like Mocal dont either !

All that is needed is some chamber volume and internal baffles to make it very difficult for liquids to pass through, but air will get past no problem. Some might even add some mesh or stainless steel wool etc to catch deposits ( even a plastic scouring type pad would do )

And better still if you have a return from the lowest part of the tank, back into the sump, below the level of the oil.
Then anything caught always gets returned back to the sump. So it never needs emptying.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


Ben H

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Melton Mowbray, Pie Country

I totally agree, Steve. Much more than a 1L tank is not necessary.

I have never liked returning the oil back to the sump. My catch tank always has emulsified oil in it. I guess because the breathed oil is mixed with damp air. We have had surge problems in the TT before though and that has very quickly filled the tank.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.


stevieturbo

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Northern Ireland

It will look bad in the tank because the tank is cold, you'll get condensation etc.

But when its returned, it just boils/burns away again. No big deal.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


george91

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Sorry if my orginal post was misleading, you learn something new everyday. So is it considered nescessary to have one on a turbo motor?

Edited by george91 on 30th Jan, 2011.


TMF interloper

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Crank case ventilation is about getting rid of the pressure from heat and piston blow by gasses. It's more complex on a turbo because you're running the induction at higher than atmospheric pressure as well as higher cylinder pressure and temperatures.

It'd be best hooked up to the inlet manifold via a non return valve, like the Metty Turbo was, with an alternative vent (Metty's was in to the air filter case) for when it's on boost.


Jason G

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Braintree, Essex

Very interesting point Steve. Never occured to me to baffle a catch tank. Probably extends the life of any filters attached too.

On 26th Jan, 2011 stevieturbo said:


All that is needed is some chamber volume and internal baffles to make it very difficult for liquids to pass through, but air will get past no problem. Some might even add some mesh or stainless steel wool etc to catch deposits ( even a plastic scouring type pad would do )

On 19th Jan, 2010 wil_h said:
I would start the furthest place from the finish.


On 24th Mar, 2012 apbellamy said:
I feel all special knowing that I've given your mum my wood.


Been neglecting Turbo'd 'A' series..............


metroturbo

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North Yorkshire

The problem with that is the oil has the effect of reducing the octane rating of the petrol, which you definitely don't want on a forced induction engine. Best to keep the oil away from the inlet whether on boost or not.


On 30th Jan, 2011 TMF interloper said:
It'd be best hooked up to the inlet manifold via a non return valve, like the Metty Turbo was, with an alternative vent (Metty's was in to the air filter case) for when it's on boost.


NealfromNZ

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Wellington New Zealand

DVS Mini , NZ motorsport catch can size is based on CC rating threshold. NA Engines up to 2000cc need a 1 litre catch can , above 2000cc needs 2 litre catch can.

NZ motorsport regs state that a turbo CC engine rating must be mulitplied by 1.7 Hence a 1330cc turbo would be equal to 2261cc NA in NZ motorsport terms. Hence a Mini Turbo competing in certian motorsport events needs to carry a 2 litre catch can and compete in a 2000 cc plus class.

No doubt this could be different in the UK and 2 litre catch can seems like somewhat overkill for vapour over time.


On 25th Jan, 2011 DVSMNI said:
haha woops my bad there was a pice in there about the sizing of catch tanks... sorry ill try find it and post just that.


wil_h

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Betwix Harrogate and York

yeah, but you try and find one of the valves fitted. I have them on my Nimbus and would love them for my Sprint, but don't even know where to start looking.

Anyone have the two valves from a Metro Turbo?


On 30th Jan, 2011 TMF interloper said:
Crank case ventilation is about getting rid of the pressure from heat and piston blow by gasses. It's more complex on a turbo because you're running the induction at higher than atmospheric pressure as well as higher cylinder pressure and temperatures.

It'd be best hooked up to the inlet manifold via a non return valve, like the Metty Turbo was, with an alternative vent (Metty's was in to the air filter case) for when it's on boost.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Tom Fenton
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Wil a Peugeot 306 TD is fitted with what I think is a one way breather valve, it is usually in a bracket attached to the side of the top mount I/C.

HOWEVER I've never actually looked that closely at one to see if it is a check valve that shuts under boost so you'd need to check.


On 29th Nov, 2016 madmk1 said:


On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else


Like fuel 😂😂


apbellamy

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Rotherham, South Yorkshire

Which two valves Wil? That big plastic thing that controls the return to the airbox and another?

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


wil_h

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Betwix Harrogate and York

There are two. A big one that is connected to the airfilter, inlet manifold and breathers (the one on the Nimbus is orange), and a little one-way one on the inlet manifold (I have the one for the inlet manifold, or at least something similar).

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.

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