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Top 2GNT Technical Turbo/Nitrous Tech topic #107540
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Subject: "Why you need to check your blow by/catchcan." Previous topic | Next topic
AdministratorCODE4Jan-27-10 04:36 PM
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#107540, "Why you need to check your blow by/catchcan."




          

With 3500 miles on the motor I noticed some drizzle around the filter on top of my catch can. Fuck. I forgot to keep an eye on that bitch. Last time I checked it was at 500 miles and there was barely a bit of oil at the bottom (the can holds 500 ml). Now it was completely full of a nice milkshake of blow by and oil.

If you spend more time on the right side of the vac/boost gauge, then check your catch can, heh.





---

2012 2500HD LML


  

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Replies to this topic
RE: Why you need to check your blow by/catchcan., RoninEclipse2G, Jan-27-10 04:45 PM, #1
RE: Why you need to check your blow by/catchcan., AdministratorCODE4, Jan-27-10 04:47 PM, #2
      RE: Why you need to check your blow by/catchcan., ez, Jan-27-10 05:38 PM, #3
           RE: Why you need to check your blow by/catchcan., RoninEclipse2G, Jan-27-10 06:23 PM, #4
                RE: Why you need to check your blow by/catchcan., eclipse982nrRST, Jan-27-10 06:47 PM, #5
                     RE: Why you need to check your blow by/catchcan., AdministratorCODE4, Jan-27-10 06:54 PM, #6
                          RE: Why you need to check your blow by/catchcan., RoninEclipse2G, Jan-27-10 06:56 PM, #7
                               RE: Why you need to check your blow by/catchcan., AdministratorCODE4, Jan-27-10 07:01 PM, #8
                               RE: Why you need to check your blow by/catchcan., Ebster1085, Jan-27-10 07:05 PM, #9
                                    RE: Why you need to check your blow by/catchcan., 420agreenvilleSC, Jan-28-10 02:28 PM, #10
                                         RE: Why you need to check your blow by/catchcan., Slo2g, Jan-28-10 04:52 PM, #11
                                              RE: Why you need to check your blow by/catchcan., Ebster1085, Jan-28-10 07:10 PM, #12
                                                   RE: Why you need to check your blow by/catchcan., Slo2g, Jan-28-10 09:06 PM, #13
                                                        RE: Why you need to check your blow by/catchcan., Ebster1085, Jan-29-10 09:05 AM, #14
                                                             RE: Why you need to check your blow by/catchcan., 420agreenvilleSC, Jan-29-10 10:23 PM, #15
                                                                  RE: Why you need to check your blow by/catchcan., AdministratorCODE4, Jan-29-10 11:17 PM, #16
                                                                       RE: Why you need to check your blow by/catchcan., 420agreenvilleSC, Jan-30-10 02:26 PM, #17
                                                                            RE: Why you need to check your blow by/catchcan., Moderatorbullettdsm, Jan-30-10 02:37 PM, #18
                                                                                 RE: Why you need to check your blow by/catchcan., Global Ruler Of All ThingsDarkOne, Jan-30-10 10:38 PM, #19
                                                                                      RE: Why you need to check your blow by/catchcan., 420agreenvilleSC, Jan-30-10 11:38 PM, #20
                                                                                           RE: Why you need to check your blow by/catchcan., Flipboi89, Feb-01-10 08:03 AM, #21

RoninEclipse2GJan-27-10 04:45 PM
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#107541, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 0




          

or buy one with a guage on the side emoji

Erik P.
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Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
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AdministratorCODE4Jan-27-10 04:47 PM
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#107542, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 1




          

True heh.

---

2012 2500HD LML


  

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ezJan-27-10 05:38 PM
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#107543, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 2


          

Thanks for reminding me. Mine has a gauge but it's not in the most convenient location.

Never found a milkshake in my catchcan before emoji

2gnt: '99 RS-T, killed by a toyota, pending rebuild...
Daily: Volt
Daily #2: '99 EVG ebike- STOLEN by PEDRO

  

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RoninEclipse2GJan-27-10 06:23 PM
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#107544, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 3




          

Originally posted by ez
Thanks for reminding me. Mine has a gauge but it's not in the most convenient location. Never found a milkshake in my catchcan before emoji


Looks more like a chocolate malt to me.

Might want to check the rest of the oil.

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!

  

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eclipse982nrRSTJan-27-10 06:47 PM
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#107545, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 4


          

That is pretty nasty.

Why the milkshake look?

-MIKE-

Stroked 2.2L

  

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AdministratorCODE4Jan-27-10 06:54 PM
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#107546, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 5




          

Not sure why it looks that way. It was pretty loose, and smelled of fuel vapor.

All the fluids look perfect - oil has no contamination.

---

2012 2500HD LML


  

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RoninEclipse2GJan-27-10 06:56 PM
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#107547, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 6




          

Maybe the oil is just foamed from the pressure pushing through it after the level exceeded the inlets.

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!

  

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AdministratorCODE4Jan-27-10 07:01 PM
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#107548, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 7




          

I am assuming the same... oxygenated oil, if there is such a thing.

---

2012 2500HD LML


  

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Ebster1085Jan-27-10 07:05 PM
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#107549, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 7


          

Whenever I check mine every 2-3K miles, I always have a mixture that is somewhat similar to that. Usually I have the foamy stuff floating on top, and then a normal oily mixture on the bottom, and it always smells like fuel vapor.

I dont think the way yours looks is anything to worry about.

1999 Eclipse GS
Built motor
Hahn 16G Turbo w/ FMIC
Hahn Stage 5 Portfueler (270's & 500's)
Zeitronix Zt-2 wideband w/ 3.5bar MAP
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420agreenvilleSCJan-28-10 02:28 PM
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#107552, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 9




          

why don't people just use a crankcase evac system? it's less maintenance, but you don't have the luxury of measuring the sludge lost... what are the differences

___________________________________________



http://www.2gnt.com/quote_db.php?id=278

Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac
Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim

  

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Slo2gJan-28-10 04:52 PM
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#107553, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 10


          

Because the evac system causes your car to smoke even more by putting the oil and contaminates in the exhaust to burn away.

  

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Ebster1085Jan-28-10 07:10 PM
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#107554, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 11


          

Why would you want that shit recirculating back into the intake tract? Rather just have it collect in a can and empty it out every now and then.

  

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Slo2gJan-28-10 09:06 PM
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#107555, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 12


          

The evac system doesn't recirc into the intake, it goes into the exhaust.

  

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Ebster1085Jan-29-10 09:05 AM
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#107558, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 13


          

Oh. I guess I'm actually not familiar with that term, but just assumed Mikey was referring to a typical PCV setup. My mistake.

Either way, I see no benefit above just having all that muck collect in a catch can.

  

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420agreenvilleSCJan-29-10 10:23 PM
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#107564, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 14
Jan-29-10 10:27 PM by 420agreenvilleSC



          

jess, its like this:

1. buy one of these, and weld it after the cat...



you could buy just that one, or buy a set, its just a little more, like this:



the threaded part screws into a small snout that you weld into the exhaust...

like this:



one thing I dont agree with on that diagram is that our 2nd o2 will get all crap on it if it's installed in that location. I have mine after the cat and after the 2nd o2. Connect a hose from it to the valve cover breather port. wallah. done.

watch this too:

___________________________________________



http://www.2gnt.com/quote_db.php?id=278

Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac
Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim

  

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AdministratorCODE4Jan-29-10 11:17 PM
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#107566, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 15




          

Mike,

Have you tested the vacuum at the valve cover while at idle and under boost? I am curious how strong the vacuum is.

---

2012 2500HD LML


  

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420agreenvilleSCJan-30-10 02:26 PM
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#107570, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 16
Jan-30-10 02:26 PM by 420agreenvilleSC



          

it's a fair amount at idle, but when throttle's applied, it gets rather strong. Can't imagine how much it'd pull when under boost, but i'm sure its plenty. I've never actually measured it

___________________________________________



http://www.2gnt.com/quote_db.php?id=278

Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac
Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim

  

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ModeratorbullettdsmJan-30-10 02:37 PM
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#107571, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 17


          

Milkshake is normal.

You know how I check my level in my catch cans? When I have little white pee pee coming out of it, I know its full, lol (um talking about the catch can here).

Boy am I a lazy bastard.

Captain Caveman

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Global Ruler Of All ThingsDarkOneJan-30-10 10:38 PM
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#107577, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 18




          

Originally posted by bullettdsm
Milkshake is normal. You know how I check my level in my catch cans? When I have little white pee pee coming out of it, I know its full, lol (um talking about the catch can here). Boy am I a lazy bastard.


I have you beat.

I just ran the hose to the ground. I know it's full when the earth is covered in milkshake.

______________________________
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420agreenvilleSCJan-30-10 11:38 PM
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#107578, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 19




          

lmao

___________________________________________



http://www.2gnt.com/quote_db.php?id=278

Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac
Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim

  

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Flipboi89Feb-01-10 08:03 AM
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#107582, "RE: Why you need to check your blow by/catchcan."
In response to Reply # 20




          

Damn I just have oil coming out of my filter..



Car Status: P0140 o2 circuit number bank 1 sensor 2 Cel. Ill fix it tomorow lol.

Estimated mileage on engine: 15,xxx

  

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