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Old 08-06-2011, 10:43 PM   #1
BMRbrnSNRbrd
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Default Billet Technology Oil Catch Can updates

I'm going to make this a constantly updated thread for the next six months to a year, depending on interest.

There are a lot of non-believers when it comes to oil catch cans and their effectiveness and use...I have no stake in anything regarding BT, but I'm aiming to disprove the rumors that it does nothing.

Today is DAY 1:

Starting mileage: 15280


Number of miles on this clean out: 3228


Empty 16oz water bottle:


Can:


Oil in the bottle:


Stay tuned for updates!
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Old 08-06-2011, 11:03 PM   #2
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I'll be watching this one
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Old 08-07-2011, 12:07 AM   #3
Okiespaniels
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Pardon my ignorance...

But I've seen this mod over on GPMM and also have heard whispered discussions about Hemi engines breathing thier own oil (thus the need for a catch can).
I'd love some schooling on this mod if you wouldn't mind. Especially why Mopar designed the PCV system like this in the first place. It looks like a lot of oil...like my old van with 300k miles pumping it through the breather hose. My van had an excuse.

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Old 08-07-2011, 12:26 AM   #4
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yuck you are making me want to get one
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Old 08-07-2011, 08:58 AM   #5
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Dodge did this for emissions and emissions only. WAYYY back in the day (like before any of us were around) there used to be little tubes that would just let this condensed oil drip onto the ground as needed, but that's not something anyone can do anymore.

What this setup does is put a two chamber can in line between the PCV valve and the throttle body. The top chamber, where both hoses connect, has a filament inside similar to steel wool. The steel wool allows the vapors to condense and then drop down into the second chamber (that you see me holding) for collection.

I figured this was a joke until seeing pics of an LX Hemi opened up for a cam/head swap and all the oil everywhere it shouldn't be. I ordered one, installed it, and instantly picked up a hand calculated .5 mpg increase and the comfort of knowing that my truck is no longer breathing it's own oil.
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Old 08-07-2011, 09:29 AM   #6
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Originally Posted by BMRbrnSNRbrd View Post
Dodge did this for emissions and emissions only. WAYYY back in the day (like before any of us were around) there used to be little tubes that would just let this condensed oil drip onto the ground as needed, but that's not something anyone can do anymore.

What this setup does is put a two chamber can in line between the PCV valve and the throttle body. The top chamber, where both hoses connect, has a filament inside similar to steel wool. The steel wool allows the vapors to condense and then drop down into the second chamber (that you see me holding) for collection.

I figured this was a joke until seeing pics of an LX Hemi opened up for a cam/head swap and all the oil everywhere it shouldn't be. I ordered one, installed it, and instantly picked up a hand calculated .5 mpg increase and the comfort of knowing that my truck is no longer breathing it's own oil.
Just an FYI...the "drip tube" hasn't been around since the early 1960's when the first PCV valve was required by the feds. Fully enclosed systems where the breather end got it's air from the air cleaner showed up around '68. I remember that on my dads '68 mustang.

Normally....proper valve cover baffling keeps you from sucking in large amounts of oil through unless your crankcase pressure is high. That used to occur from worn rings, and when the system got overun, it pumped it elsewhere...usually out a gasket.

I haven't studied a new Hemi closely, but one thing I noticed is that the valve covers are almost non existent. Since there's little room for baffling I'd bet your pcv vacum does indeed pick up more "oil fog" from inside the valve cover than it should.

I'd say the engineers goofed... digesting oil causes pinging and unless internal materials have changed it will plug your catalytic converter quicker.
I'm suprised JC Whitney or someone else didn't think of this sooner for high mileage cars.
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Old 08-07-2011, 12:50 PM   #7
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Thanks for that info bud.
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Old 08-07-2011, 03:42 PM   #8
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That doesn't seem like a lot of oil to me. When the plenum gasket in my truck was blown I could go through a quart of oil in 3000 miles no sweat. THAT was an oily mess!
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Old 08-07-2011, 03:51 PM   #9
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That was the same with me
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Old 08-07-2011, 04:23 PM   #10
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Originally Posted by Okiespaniels View Post
That doesn't seem like a lot of oil to me. When the plenum gasket in my truck was blown I could go through a quart of oil in 3000 miles no sweat. THAT was an oily mess!
That was due to a necessary repair, this is by design.
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