This is why you should run a catch can. - Polaris RZR Forum - RZR Forums.net
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post #1 of 91 Old July 31st, 2017, 07:02 PM Thread Starter
 
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This is why you should run a catch can.

Without a catch can you are pumping this through your motor. When I pulled my intercooler out it was covered in oil residue.
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post #2 of 91 Old July 31st, 2017, 11:52 PM
 
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Re: This is why you should run a catch can.

What hoses do you hook the catch can up to?
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post #3 of 91 Old August 1st, 2017, 06:45 AM Thread Starter
 
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What hoses do you hook the catch can up to?
The breather hose off the engine that runs into the intake tube before the turbo.
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post #4 of 91 Old August 4th, 2017, 01:43 PM
 
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Re: This is why you should run a catch can.

Who makes a catch can kit?
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post #5 of 91 Old August 4th, 2017, 02:16 PM Thread Starter
 
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Who makes a catch can kit?
I had one laying around from my ultra four days. I just used the stock hose and clamped the can to the frame. It took less than 10 minutes.
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post #6 of 91 Old August 4th, 2017, 03:18 PM
 
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Re: This is why you should run a catch can.

So what are we looking at in the picture that tells us we need a catch can?
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post #7 of 91 Old August 4th, 2017, 03:23 PM
 
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Re: This is why you should run a catch can.

Quote:
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So what are we looking at in the picture that tells us we need a catch can?
The disgusting oily/watery stuff draining out of the catch can....

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post #8 of 91 Old August 4th, 2017, 06:25 PM
 
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Re: This is why you should run a catch can.

My neighbors company make them for cars he gave me one to try on my RZR. Once it's installed I'll post some pictures. Here's a link to his very well made.
http://www.radiumauto.com/Universal-...-Can-P178.aspx
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post #9 of 91 Old August 4th, 2017, 06:41 PM
 
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Re: This is why you should run a catch can.

Quote:
Originally Posted by Riddler6.7 View Post
Quote:
Originally Posted by dajo View Post
So what are we looking at in the picture that tells us we need a catch can?
The disgusting oily/watery stuff draining out of the catch can....

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And why do you have water in your oil?
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post #10 of 91 Old August 4th, 2017, 06:50 PM
 
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This is why you should run a catch can.

And why do you have water in your oil?[/QUOTE]



That's what I was thinking! I have a catch can on my wife's twin turbo car, and it comes out really black. That looks like it has water in it. Intercooler leaking? Or maybe snow country does that?
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post #11 of 91 Old August 4th, 2017, 07:28 PM
 
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Re: This is why you should run a catch can.

Quote:
Originally Posted by Robin Hood View Post
Quote:
Originally Posted by Riddler6.7 View Post
Quote:
Originally Posted by dajo View Post
So what are we looking at in the picture that tells us we need a catch can?
The disgusting oily/watery stuff draining out of the catch can....

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And why do you have water in your oil?
Not my picture. But every RZR that I have seen has a lot of moisture/condensation coming out of the crank case vent. The dry sump XP900s were notorious for creating a "milky" layer on top of the oil reservoir. Milky or not, even if what comes out of the catch can is mostly just oil residue, it's still bad especially for the turbo models as it coats the inside of the charge tubes and the intercooler and gums up.

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post #12 of 91 Old August 4th, 2017, 07:33 PM Thread Starter
 
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Quote:
Originally Posted by Riddler6.7 View Post
Quote:
Originally Posted by Robin Hood View Post
Quote:
Originally Posted by Riddler6.7 View Post
Quote:
Originally Posted by dajo View Post
So what are we looking at in the picture that tells us we need a catch can?
The disgusting oily/watery stuff draining out of the catch can....

Sent from my SAMSUNG-SM-G890A using Tapatalk
And why do you have water in your oil?
Not my picture. But every RZR that I have seen has a lot of moisture/condensation coming out of the crank case vent. The dry sump XP900s were notorious for creating a "milky" layer on top of the oil reservoir. Milky or not, even if what comes out of the catch can is mostly just oil residue, it's still bad especially for the turbo models as it coats the inside of the charge tubes and the intercooler and gums up.

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I noticed it's less now that I run a good oil cooler.
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post #13 of 91 Old August 4th, 2017, 10:33 PM
 
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Re: This is why you should run a catch can.

My last couple of turbo charged cars all ran oil catch cans. Most of the forums for turbo charged cars have tons of threads on this topic. I figured it would be a matter of time before they started up here. You can run a catch can on pretty much any type of car but it is even more important on turbo-ed cars. The amount of blow by when running a turbo is increased because of the added intake pressures. Like stated above the gases are vented from the crankcase normally through the PCV valve and routed back to the intake. In theory these gases are to be burnt in the combustion. What happens overtime is the intake valve starts to build up with carbon which cause the valves not to seat correctly. Also overtime the gas/oil/moisture (sludge) will build up in the inter-cooler and intake plumbing. This will cause the inter-cooler to become less effective at cooling the intake air.

There are two types of catch cans available. Vented and non-vented. The vented like picture by the op will filter the heavy liquids out and discharge any remaining air/fine gases through the vent. The non-filtered type will filter the heavy liquids out and discharge the air/fine gases back to the intake. There are pro's and con's of each. Catch cans tend to be more effective when mounted lower on the machine (Below the PCV valve)

There are tons of different catch cans available. I would avoid some of the ebay junk. Some cans have integrated filters and others require the use of filter media. Normally filter media is like a very course stainless scrub pad. (Don't use steel wool) The filter media will help stop the airborne particles and force them to fall in the can. The link above for the radium can is one of the best cans in my opinion available. It comes at a price. Mishimoto and Addw1 are a couple others that pop in my head.

And finally......Cold climates can also play a factor in the amount of blow by gases that are exhausted by the crankcase. Living in Wisconsin we have warm summers and cold winters. During the summer I would empty the can once per month and maybe empty 2 or 3 ounces from the can. During the winter I would have to empty the can once per week. It is amazing how much more moisture there is when it gets colder. There have been cases where these cans have froze solid and blocked the path of crankcase gases. If the crankcase gases get trapped the pressure will find another way to escape the crankcase. Its usually the crankshaft seal which is a costly repair. Moral of the story......Make sure you EMPTY the can OFTEN. It's hard to believe a mixture of gas/oil/water can freeze but it will.

Just my 2 cents from what I've learned over the years. Hell I haven't even looked at my new RZR to see how the PCV hoses are ran so don't yell at me if I stated something wrong.
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post #14 of 91 Old August 5th, 2017, 03:52 AM
 
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Re: This is why you should run a catch can.

This is a topic for many forums and discussed many times. My supercharged fox is simply vented through the valve cover with a small breather, old school. I used a air compressor type on my Lightning. Since it was clear, you could see when to clean it out. One issue with it the filer media would clog up and needed to be cleaned with carburetor cleaner. Before doing this, I took off the inter cooler and spent many hours cleaning out all of the oil residue. I dumped it out every other fuel stop.

I haven't thought about the XPT. Surprised it isn't discussed more.

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post #15 of 91 Old February 7th, 2018, 07:29 AM
 
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Re: This is why you should run a catch can.

Quote:
Originally Posted by Rickrock View Post
My neighbors company make them for cars he gave me one to try on my RZR. Once it's installed I'll post some pictures. Here's a link to his very well made.
http://www.radiumauto.com/Universal-...-Can-P178.aspx
do you know what "Inlet" & "Outlet" fitting size is required for a 2017 turbo?

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