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 Post subject: Re: oil catch can problem
PostPosted: Tue Feb 25, 2014 2:10 pm 
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bumpstart wrote:
Image

that is as simple as it can get , other method requires using the purge valve or purge solenoid and one way valves and then routing the vacuum to the TB instead of the air cleaner
( which will keep the turbo and the intercooler a little cleaner )


I've decided ill be fitting a catch can using this method (without filter for EPA)
Since its a sealed tank hence higher vacuum of tank I'm worried about some of the mist running back through turbo, etc.

this can't be good so since I have a sealed pod filter was wondering if tapping a hose before filter would be a good idea?

Still be under some vac (enough?) but would have the filter to catch at least some vapour failing that are there inline filters that might be suitable?

Or am I just paranoid?

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Tue Feb 25, 2014 2:46 pm 
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for it to be genuinely flow through ventilation then the vacuum break mini airfilter should be on the lower nipple on the filler tube
i use upsized to 5/16 fittings on my tube and the lowest vent routes via hose and one way valve to rocker cover filter
( so that air cannot vent from sump after shutdown , and flows towards the engine while vacuum is applied at the turbo airfilter )

from the highest nipple on the filler tube ( mine upsized to 5/16 and fitted into the lid ) then you would route it to your can / mist separator ,, and from the highest point on that.. to the turbo airfilter
( mine directly to the turbo airfilter , sans can .. cause i use the full height of the filler tube.. and the can is superfluous )

EG... use the setup in the picture at the TOP of page 3

no fumes
no mayo

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Tue Feb 25, 2014 3:04 pm 
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Ok, excuse my ignorance but how can you utilise the can drain with this set up?
My lower filler outlet has been run to series 2 canister and top is just open, done when converted, so ill just block that one inlet on canister and route it as you suggest

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Sat Mar 01, 2014 2:52 pm 
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The engine seems to be spraying oil from the top outlet of the oil filler neck when boosting hence the need to run a can but unsure of drain using that diagram

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Tue Mar 04, 2014 10:49 pm 
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if you want to use a drain then add another nipple
( the lowest .. however..on FD engines with single turbo you conveniently have the old drain point at back corner on the block )

the can must be mounted higher than the filler neck nipple it drains to

if your turbo or engine has excessive blowby then upsize the lines and nipples to 5/16 or 3/8 and try and add the outlet to the can at the highest point on filler neck

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Sun Mar 09, 2014 9:12 pm 
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Just wondering if anyone has/ is it safe to have the breather for the fuel tank into the catch can, if there is a line from the catch can to the intake before the turbo? Or do you run the risk of having small amounts of fuel get into the oil without a 1 way valve back to the oil neck.

Would like to try make some space in the engine bay by removing charcoal canister

also, is there any problem if the line from the catch can to the intake before the turbo is fairly long (on the other side of the car approx. 1.5m)


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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Thu Apr 03, 2014 11:22 pm 
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anyone?


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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Fri Aug 29, 2014 3:12 pm 
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Hi Bumstart, it doesnt look like the pics work anymore. Is there any chance you can re upload your diagrams?

Im getting knee deep in a single turbo conversion and looking to get rid of the excess crap in the rats nest, but still want to maintain emmissions gear and have a suitable catch can setup.

I read through all those posts and understand the concept, just not entirely sure how to set it up.

Thanks

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Wed Sep 03, 2014 1:21 pm 
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sorry, as i no longer have free access to my imageshack pics

and i am not at this moment inclined to go back through many old PC's and hard drives to dig it up


\apologies to you

nothing personal .. i just do not have the time

i am getting too many requests to jump through hoops for stuff people can find or measure for themselves

and it makes me no longer want to play

it is about 6 requests for my time .. in just this week
.. to dig up pics or to measure a thread something that they have already in front of them

and it is time to draw a line in the sand


leave your feedback with imageshack .
tell them what you think of them changing policy and now holding peoples images to ransom

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Last edited by bumpstart on Wed Sep 03, 2014 1:42 pm, edited 1 time in total.

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Tue Feb 10, 2015 3:28 pm 
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ok after reviewing this thread about 50 times and inspecting diagrams of the crankcase ventilation system, this is what ive come up with.
Hopefully my pictures wont die so soon and everyone can use these diagrams of how to set it up properly.

please advise if i have it drawn up correctly. it seems right to me, but its hard to confirm without bumpstart diagrams and the internet being full of bullshit.

This is how im looking to set mine up
Image

oil filler vent, middle plate vent and charcoal canister vent all vent into the catch can.
PCV is hooked up as per factory (going off the diagram below) except instead of sucking out of the oil filler vent, it now sucks clean air out of the top of the catch can.
and under high load the turbo sucks out of the top of the catch can via a upsized hose barb via a one way valve.
I have gone with this method because i want to keep the PCV valve funtioning and dont want to have a rocker cover breather filter thing. I want to keep it as factory as legal as possible.
this is the catch can that im having made in the near future.
Image

can anyone see any problems with this arrangement?

this is the factory s5 and cosmo 13BRE setup i was using.

Image

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Tue Feb 10, 2015 7:34 pm 
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anyone feel free to chime in!

My understanding of the above method is that it works exactly the same way as the factory setup, i just have a catch inline to hopefully catch any shit that might be in there before the engine eats it up via the intake or the PCV.
Sounds good to me.


I believe this is bumpstarts simplified, no PCV method

Image

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Tue Feb 10, 2015 9:33 pm 
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That all looks good to me.


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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Wed Feb 11, 2015 9:46 am 
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Thanks mate im gonna give that a go.

Bumpstart has advised that this method is not a true flow draw through ventilation method and may develop some mustard.
a way to maybe improve (and simplify) it would be to vent the charcoal canister to the nipple on the middle plate. less vents required on the can, less hoses.

Iv never had any problems with mustard in the factory setup, so ill give my way a go first. I like the idea of absolutly everything venting to the can and the PCV sucking what should be clean air from the can instead of the filler neck.

Will report on how it goes when i get everything sorted and tuned.

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Wed Apr 27, 2016 4:53 pm 
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UPDATE.
over a year later and no issues what so ever.

Zero mustard in the filler neck. Its actually dry as a bone.
Intake is all still clean as new (pre turbo, cooler and intake man)

Can collects abit of crap but not too much. Ended up with a much simpler design of a can and works a charm.


Thanks again Bumpstart!

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 Post subject: Re: How to properly setup an oil catch can (Bumpstarts Guide)
PostPosted: Wed Apr 27, 2016 5:12 pm 
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i find it so funny now when I see peoples $60k drive in drive away workshop package BS setups and they have not even come close to setting up the crankcase ventilation properly.
It literally a hose into a vented can...

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