[fastloop]

Originally Posted by Big Tom

AR Design is also using ½" hoses for their OCC...

I believe this is only true for their 1st gen OCC. The one I got is quite different and use 3/4" hoses.

[Big Tom]

I just upgraded my $34 OCC with a 3/4" hose all the way from the crankcase + a bigger filter with 3/4" connection for maximum flow.

[dzenno]

Great, what's the flow rate on that little filter, you don't want that being restrictive either..

[ar design]

Originally Posted by Big Tom

AR Design is also using ½" hoses for their OCC...

We use 3/4in hose, and provide a 5 micron filter setup that offers the best filtration/separation on the market - period.

[Big Tom]

Originally Posted by ar design

We use 3/4in hose, and provide a 5 micron filter setup that offers the best filtration/separation on the market - period.

Me to.

But what about the 1/2" hoses on your OCC in this pic?

Have you upgraded your old OCC with 3/4" hoses?
In that case, I assume that you did consider that your old OCC was flowing too bad?
Should the owners of your old $229 OCC be worried??

[dzenno]

AR, why don't you lower that price in half and clean up the f* OCC market...229 won't do it, c'mon..u have a great product but the price point, really?

[ar design]

Originally Posted by dzenno

AR, why don't you lower that price in half and clean up the f* OCC market...229 won't do it, c'mon..u have a great product but the price point, really?

There is a reason the kit is not $99 - quality parts. Sourcing a 5 micron filter that flows enough for this motor was not an easy task. Most filters on the market made for air compressors do not come even close to flowing enough. Brackets are bent from 1/4in aluminum, and I use Goodyear hose. I am sure it can be ghetto rigged for cheaper - but is that what you want on your car?

I am working on a cheaper catch can that does not have filtration or recirc, but just vents to atmosphere through a breather filter for customers on a budget.

[R1000K3]

Originally Posted by ar design

I am working on a cheaper catch can that does not have filtration or recirc, but just vents to atmosphere through a breather filter for customers on a budget.

I think that's a good idea and am surpriced it was not done from the beginning. Not that I have a problem to understand the $229 pricing. It cost money to source, produce and manage a bolt-on kit. When a person who lives on the business does this, and not just does it for pleasure as the enthusiasts, the product must generate a profit within the expected sales volume. And there are real taxes that must be covered.

The problem with a conventional OCC is instead technical. Take a look in the outgoing hose of any re-circulation type OCC. You'll find plenty of oil there and where does that go when the hose is connected to the intake

BigTom has done a great work on his OCC and made it possible for people that are willing to spend some time on DIY to get a premium OCC very cheap. I’m sure AR will have luck with their upcoming OCC as well since many prefers to buy a bolt-on kit rather than collecting parts themselves.

Question to AR; your 5 micron filter is claimed to flow very well. Have you made a flow test on the unit it after it has been in use for some time and the filter has collected oil and grime

[Big Tom]

Originally Posted by R1000K3

The problem with a conventional OCC is instead technical. Take a look in the outgoing hose of any re-circulation type OCC. You'll find plenty of oil there and where does that go when the hose is connected to the intake

IMO, an OCC with a breather is the best from two worlds.

- Absolute NO oil, dirt and moisture going back to the intake.

- Almost no oil mist in your engine bay, which usually is the result with a simple crankcase breather.

[pHo_e92]

thanks big tom for the great diy. perfect for someone on a budget.

[Ryan Mills]

Big Tom, the brass filter was a coalescing filter. It's purpose is to collect all of the oil vapor traveling through it and condensing it into the bowl. I almost used a similar setup, but I'm afraid of pressure buildup in the crankcase when the filter gets near the end of it's life. I'm going to see what I can do for a homemade setup, but I'll probably end up with a proven design like a Racor setup.

[Big Tom]

Originally Posted by Ryan Mills

Big Tom, the brass filter was a coalescing filter. It's purpose is to collect all of the oil vapor traveling through it and condensing it into the bowl. I almost used a similar setup, but I'm afraid of pressure buildup in the crankcase when the filter gets near the end of it's life. I'm going to see what I can do for a homemade setup, but I'll probably end up with a proven design like a Racor setup.

That's why I've removed the brass filter. I wanted the OCC to be as free flowing as possible.

[Ryan Mills]

Originally Posted by Big Tom

That's why I've removed the brass filter. I wanted the OCC to be as free flowing as possible.

I'm just wondering if the catch can part is even functional at this point. is there any oil getting stopped at this point? What would happen if you just use the filter without the can? -thanks!

[R1000K3]

Originally Posted by Ryan Mills

I'm just wondering if the catch can part is even functional at this point. is there any oil getting stopped at this point? What would happen if you just use the filter without the can? -thanks!

These type of cans traps oil very well even when the filter is removed as shown below. The car has been garaged for a couple of months so the water and oil have separated in the can. It took a couple of hard weeks driving to fill the can to this level, i.e. about 50%. In case you use a breather w/o can it will begin to drip oil very soon, there is a lot of oil in the crank case fumes.

[fisherbln]

Originally Posted by ar design

I am working on a cheaper catch can that does not have filtration or recirc, but just vents to atmosphere through a breather filter for customers on a budget.

Please get this kit out soon, I'd love to have it!

[dzenno]

I don't run an OCC or a filter at all..just a 3/4'' hose down the back of the engine...no fumes what so ever and I capped off the intake side..done

[Forcefed3]

Couldnt you just run a hose from the PCV to dump out under the car?

[Forcefed3]

http://www.supersixmotorsports.com/pdf/PCVBypass.pdf

[Transport3r]

Originally Posted by dzenno

I don't run an OCC or a filter at all..just a 3/4'' hose down the back of the engine...no fumes what so ever and I capped off the intake side..done

So there is a check valve in the pcv system to prevent the engine from sucking in unfiltered air?

[Forcefed3]

Originally Posted by dzenno

I don't run an OCC or a filter at all..just a 3/4'' hose down the back of the engine...no fumes what so ever and I capped off the intake side..done

Where does it come out? Did you use zip ties or anything to secure it? Do you have any pictures of the PVC to hose connection and the cap you used to block the intake side?

[dzenno]

Haven't secured it yet, hose being 3/4" is pretty snug back there..just have a clamp on the PCV side to hold it in place and then on the intake side I found a rubbery plastic cap 1" at walmart that u use on round legs of chairs to protect your hardwood floors from scratching , which fit right on top of the intake side like a glove...

[dzenno]

Originally Posted by joshuo

So there is a check valve in the pcv system to prevent the engine from sucking in unfiltered air?

From everything I've read on the n54 PCV, including the doc stickied in this section, says there's a check valve..