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How-to for Blow By Catch Can

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Old 06-01-2007, 09:44 PM
  #81  
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Originally Posted by Maxim(a)SerjVQ
has anyone tried using a remote oil filter housing for this application? I've seen a few and despite the higher cost, you could run an el cheapo oil filter on the end and it's already designed for holding hot oil. and if you even have to replace it it'll be $5-10
anyone?
any comments on this? Summit has a kit for $35 and a) i can replace the 1/2" barbs with some reducers, or b)force the 3/8" PCV line onto the 1/2" barbs. the hose included in the kit is made to handle oil and so would any filter placed on it.
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Old 06-01-2007, 09:53 PM
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Its really choice on how you want to go about this. Since most of the org people use this set-up and not any other ones. If you like you can try it for yourself.
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Old 06-01-2007, 09:59 PM
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ah, alright I thought you were referring to that guy posting the link to the ebay kit. I'll give it a go then. . .maybe even do a little color cusomizing while I'm at it.
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Old 06-01-2007, 09:59 PM
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If you like. I don't have a problem with how mine is as long as it is doing its job.
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Old 06-02-2007, 10:45 AM
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hey law, thanks again for the write up. i put miine in today using almost the exact same parts as you. The only things i used different was instread Ward adapters i got the husky adapter kit which included all the clamps and such. Also i went to pepboys and picked up some fuel injection braded hose for about 4.79 a ft and it seems to be holding up fine. So far it has collected oil and thats with about 30-50 miles of driving. It is very little but im happy with the results. Thanks again.
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Old 06-02-2007, 07:28 PM
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I'm still trying to find the best catch-can out there so I've been reading and reading...
I liked the idea with the steel mesh condensing the vapors but for those on sale on eBay for example, they don't give any details what's the inside of the catch can like.
Found a guy who posted pics after dissecting his, the model is also sold on eBay. See the images here: http://www.northamericanmotoring.com...ad.php?t=91390

Like most of the ones on eBay, the in/out pipes are too close.

A catch can that looks very promising is this one made by AMW:
Comes with the steel mesh and little different system for in/out (more like the HD filter).



Looking at the parts and the explanation how to install I think this is a good one even if it doesn't have the level indicator.
I'm not sure if the company sells them anymore
Followed the link but can't see it on the website.
It says there the company is located in TX:
Accurate Machine Works
4400 Pate Road
College Station, TX 77845

What do you think of this design, guys?



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Old 06-03-2007, 11:27 AM
  #87  
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Well I just installed this yesterday and something is jacked up.

My car is taking 10-15 cranks for a cold start instead of the usual 2-3. I turn the car off and let it sit for a minute and it's taking a consistent 7-9 cranks to start. Any idea on what could be causing this?

I just put the setup back the way it was before and it's still the same. I did notice that I didn't move to O-ring from the old PCV to the new one which I did also just now.

Will it take the CPU or whatever time to adjust back to the way it was before?

Any help is greatlyyyyy appreciated.
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Old 06-03-2007, 12:10 PM
  #88  
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The arrow indicates the flow FROM the PCV valve TO the IM.
I think you got it the wrong way.
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Old 06-03-2007, 12:31 PM
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Well I also put it back to the way it was and still it's taking way to long to start up. Aw crap that does make sense. Does anyone know if that would effect anything that I might need to fix now? I had the setup on the car for one night and today I'm sitting around twiddling my thumbs until I hear some sort of solution.
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Old 06-03-2007, 02:57 PM
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Originally Posted by macnolias
Well I also put it back to the way it was and still it's taking way to long to start up. Aw crap that does make sense. Does anyone know if that would effect anything that I might need to fix now? I had the setup on the car for one night and today I'm sitting around twiddling my thumbs until I hear some sort of solution.
It's probably just a coincidence. Go to autozone and check your battery.
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Old 06-03-2007, 03:17 PM
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The battery is brand spanking new I changed it two days ago. It's really frustrating I put back on the original PCV valve and everything.

Would a possible vacuum leak cause this problem? Maybe one of the hoses has a possible leak in it....
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Old 06-03-2007, 07:07 PM
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Have you had your starter tested?
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Old 06-03-2007, 08:47 PM
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How do I get the starter tested? It's to much of a coincidence I think? Do you think it would be covered under my warranty if it's taking to long to start?
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Old 06-04-2007, 06:37 PM
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If you want to stop oil from getting into your manifold you will have to install 2 filters not just one. The direction of flow at idle and low RPM's is from the front bank down through the engine up the other side and out the PCV and from there to the intake manifold.

However at medium and higher RPM's the flow is reversed in the one on the front of the engine and oil and fumes are coming from both banks. Depending on the condition of your engine it will happen at higher or lower in the RPM range. Poor engine lower, good engine higher in the RPM range because there is less blowby.

There is a fairly extensive writeup in the FSM on this phenomina. Well not really a phenomina but what happens during idle is not necessarily what happens at other RPM levels.

For the really performance minded Jegs sells a venturi kit for the exhaust manifolds that will literally suck the fumes from both banks and send it out the exhaust. Not really a good idea for emissions.

What I have used for the past 2 years is just a filter on each bank exhausting the fumes to atmosphere. I wouldnt recommend that unless you don't mind Al Gore hunting you down, he has already warned me about my lack of a cat and I don't even live in the US.
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Old 06-05-2007, 08:13 AM
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Originally Posted by Jime
If you want to stop oil from getting into your manifold you will have to install 2 filters not just one. The direction of flow at idle and low RPM's is from the front bank down through the engine up the other side and out the PCV and from there to the intake manifold.

However at medium and higher RPM's the flow is reversed in the one on the front of the engine and oil and fumes are coming from both banks. Depending on the condition of your engine it will happen at higher or lower in the RPM range. Poor engine lower, good engine higher in the RPM range because there is less blowby.
...
Are you sure about this? My PCV is a one way valve out to the IM.
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Old 06-05-2007, 08:27 AM
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Originally Posted by 2002 Maxima SE
Are you sure about this? My PCV is a one way valve out to the IM.
I didn't say the rear bank reversed flow which is where the PCV is. Its the front bank that reverses flow.
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Old 06-06-2007, 01:45 PM
  #97  
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which way does the air flow go on a de-k motor? does the air flow into the pvc or out of the pcv
 
Old 06-06-2007, 03:34 PM
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Originally Posted by absoundlab
which way does the air flow go on a de-k motor? does the air flow into the pvc or out of the pcv
All Gen Maxima's flow the same way, out of the pcv.
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Old 06-06-2007, 03:37 PM
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so the setup should be pcv hose going into the oil catch out of the oil catch back to the motor.
 
Old 06-06-2007, 04:51 PM
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Originally Posted by absoundlab
so the setup should be pcv hose going into the oil catch out of the oil catch back to the motor.
Out the oil catch to the intake manifold. But what I have been trying to say is that you need one on the other bank as well because the flow reverses at mid and high rpm, so having only one oil catch can will not stop all the oil from going into the intake.
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Old 06-06-2007, 05:01 PM
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so i need two of them?
 
Old 06-06-2007, 05:41 PM
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Originally Posted by absoundlab
so i need two of them?
you dont need two but you can opt for two. your going to need one for the rear valve cover were the pcv is and your going to need the one in the front for the intake. I only have it on the rear and so far i have about 1 TB spoon in the cup and thats with maybe 60-100 miles of driving. I dont think im going to put on in the front because it going to be too cluttered.
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Old 06-06-2007, 06:11 PM
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You only need 2 if you want to catch all the oil not just part of it.
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Old 06-06-2007, 06:27 PM
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ya I think im only going to use one
 
Old 06-12-2007, 07:10 PM
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Originally Posted by Jime
You only need 2 if you want to catch all the oil not just part of it.
Is this true with a 3.0 Setup. I can't seem to understand how oil would get into the intake even with the one catch can from the rear valve cover to the UIM.
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Old 06-12-2007, 07:52 PM
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So I been reading on about this, some ppl have issues about the hoses flattening out, There is a Fix for this, In most parts stores there is a HELP section, Find the long springs, put them inside the hose and it wont flatten out on you anymore ^_^
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Old 06-12-2007, 07:55 PM
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Originally Posted by Professor`
So I been reading on about this, some ppl have issues about the hoses flattening out, There is a Fix for this, In most parts stores there is a HELP section, Find the long springs, put them inside the hose and it wont flatten out on you anymore ^_^

no there are more than one type of hoses. in automotive apps. you have fuel, oil and vaccum. if you use actual oil hose then you wont have a problem
 
Old 06-12-2007, 08:02 PM
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Originally Posted by absoundlab
no there are more than one type of hoses. in automotive apps. you have fuel, oil and vaccum. if you use actual oil hose then you wont have a problem
I personally use Transmission cooler hoses ^^, thats just a simple fix till you can find better hoses ^_^
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Old 06-12-2007, 08:19 PM
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transmission cooler hose will work fine because that's an oil hose
 
Old 06-12-2007, 09:24 PM
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Hey Jime, if you don't mind, can you post some pictures of your set up? The reason why I ask is because I believe that if there is oil entering the IM, i think it causes a loud humming noise in my motor at around 2500-3500 rpm. It might be in my head but whe nI empty out my oil catch can, it kind of goes away. I want to step it up to the two catch cans setup.

BTW, where does the front hoses plug into front bank?
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Old 06-20-2007, 06:29 PM
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So i installed a catch can on the 2000 max today Exact one in photo from home depot, $11.64 hehe, i replaced my pcv valve also in the process and i DESTROYED the pcv valve grommet doing so, Now i need a damn grommet, the pcv valve is under the damn throttle body in these 2k maxs, vq30dek , What a pain in the **** to replace so far i did not notice anything and the bowl is still clean, we will see in a few days now.
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Old 06-21-2007, 06:22 AM
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Originally Posted by Professor`
2k maxs, vq30de ,
Moot point but it is a VQ30DEK
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Old 06-21-2007, 06:24 PM
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Originally Posted by NmexMAX
Moot point but it is a VQ30DEK

Professor`<sweets bullets>
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Old 06-21-2007, 06:34 PM
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Originally Posted by Professor`
Professor`<sweets bullets>
In this case:

sweat > sweet
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Old 06-25-2007, 02:44 PM
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Originally Posted by NmexMAX
In this case:

sweat > sweet
ugg i give up.
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Old 06-25-2007, 02:46 PM
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2k max Catch can

Here is some photos of the catch can install in the 2k max , i went and got the same items as listed in this thread, Works like a charm.


:

The pcv valve was a &*#$@$ to get to , I took the airbox out to make it a little easier, Then during the reinstall i tore the grommet, went to advace auto and got a new one with a new valve, put some vasaline on it, slide right in.
Hardest part is getting to the pcv valve wich is under the throttle body./
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Old 06-25-2007, 04:02 PM
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what size hose did you use? 1/2"
 
Old 06-25-2007, 05:43 PM
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Originally Posted by absoundlab
what size hose did you use? 1/2"

I Think so hehe, came with the tranny cooler.
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Old 06-25-2007, 05:47 PM
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Looks identical to my filter, and I used 3/8"
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Old 06-25-2007, 06:12 PM
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Originally Posted by NmexMAX
Looks identical to my filter, and I used 3/8"
Possibly. Its to hot outside to look now, its prolly 3/8"
the humidity is like over 9000% !!!!!!!!!!!!!!!!
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