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Old 06-23-2011, 03:46 AM   #1
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Default Can I set up my catch can like this?

So, I took off my intake pipes the other day and realized how caked they were with oil, and I'd rather have that not go through my intercooler. After searching around, I've seen a lot of controversy with oil catch cans. Right now I'm running 10psi on my 2554 and I don't plan on changing any of that soon.

So, would this setup be sufficient?
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Routing both ports on the valve cover to a vented catch can? What would I use to plug the PVC hole? I've found a few similar catch cans on eBay for fairly cheap that I thought I'd try. Do I need another catch can for something? I've been seeing people talk about venting blah blah blah with another can and routing something somewhere. Bunch of gibberish to me at only 10psi. So I just need to know if this 1 catch can setup this way will be safe.

Input or help please? Thank you.
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Old 06-23-2011, 04:06 AM   #2
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Subscribed to see if this is a good low boost solution
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Old 06-23-2011, 04:08 AM   #3
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Shouldn't need a low boost solution. 323GTX PCV, stock PCV routing, vent the driver's side valve cover (or run a hose to a vented catch can). If you need more than that, you've got a blowby problem that needs solving.
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Old 06-23-2011, 04:22 AM   #4
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So I should replace the PCV with this?
http://cgi.ebay.com/ebaymotors/Mazda...Q5fAccessories

And then just leave the hose there to the valve cover and then vent the other side? When I unplugged the PVC hose it looked like it had something like that on it already (I bought the car boosted). Maybe all I need is a filter for the other side then...

What's the difference between doing that and bringing both hoses to a vented catch can?
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Old 06-23-2011, 09:02 AM   #5
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You could but you don't want to.
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Old 06-23-2011, 09:31 AM   #6
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Quote:
Originally Posted by Savington View Post
Shouldn't need a low boost solution. 323GTX PCV, stock PCV routing, vent the driver's side valve cover (or run a hose to a vented catch can). If you need more than that, you've got a blowby problem that needs solving.
Well that's good to know. That exact setup is on my car and it works fine on the track, at 10psi. Doubt you need anything else.
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Old 06-23-2011, 10:35 AM   #7
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Looks good.

Just stick your thumb in the PCV hole and you're good to go. Or tape a quarter on it and jbweld the tape down. Or fill the hole with RTV and sawdust. Or weld a bung onto it and rubberband a condom on the bung.

Or seriously, just clean out the hole nicely and fill it will jbweld. Or seriously put the PCV back in there and zip tie a vacuum port cover on it.
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Old 06-23-2011, 10:36 AM   #8
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BTW did your notice if engine brace actually does anything?
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Old 06-23-2011, 10:40 AM   #9
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Quote:
Originally Posted by Savington View Post
Shouldn't need a low boost solution. 323GTX PCV, stock PCV routing, vent the driver's side valve cover (or run a hose to a vented catch can). If you need more than that, you've got a blowby problem that needs solving.
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Well that's good to know. That exact setup is on my car and it works fine on the track, at 10psi. Doubt you need anything else.
Same set-up I have. (driver's side hose to VTA can, GTX w/stock routing on pass side). Supercharged (hotside) at 12psi. No issues.
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Old 06-23-2011, 10:41 AM   #10
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Quote:
Originally Posted by curly View Post
Well that's good to know. That exact setup is on my car and it works fine on the track, at 10psi. Doubt you need anything else.
Stock PCV, Stock PCV Routing, Stock Breather Routing, Added Check Valve in front of PCV - good for 15psi on teh street
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Old 06-23-2011, 10:44 AM   #11
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What about oil vapors into the IM? Maybe oil separator (not vented, obviously) on the PCV side and vented catch can on the driver's side?
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Old 06-23-2011, 11:29 AM   #12
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I'm just going to run both sides through a sealed can vented to the exhaust. LIKE A BOSS
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Old 06-23-2011, 11:57 AM   #13
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I didn't think I was getting any oil sucked into my system with my pcv and dr side vta'd until I took off my intake manifold. I was sucking oil in and could see it soaked into the im gasket and inside the #2 and #3 runners.
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Old 06-23-2011, 12:59 PM   #14
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Quote:
Originally Posted by Braineack View Post
Stock PCV, Stock PCV Routing, Stock Breather Routing, Added Check Valve in front of PCV - good for 15psi on teh street
This is my setup exactly, but with a 323GTX PCV valve. The little check valve in front of the PCV fixed my problems.
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Old 06-23-2011, 05:33 PM   #15
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Quote:
Originally Posted by Faeflora View Post
Looks good.

Just stick your thumb in the PCV hole and you're good to go. Or tape a quarter on it and jbweld the tape down. Or fill the hole with RTV and sawdust. Or weld a bung onto it and rubberband a condom on the bung.

Or seriously, just clean out the hole nicely and fill it will jbweld. Or seriously put the PCV back in there and zip tie a vacuum port cover on it.

BTW did your notice if engine brace actually does anything?
The pic in the first post isn't my car. I found it and used it as an example because I want to run a similar set up.

Quote:
Originally Posted by sixace View Post
Same set-up I have. (driver's side hose to VTA can, GTX w/stock routing on pass side). Supercharged (hotside) at 12psi. No issues.
I'm still confused. So I can throw in the GTX PVC on the passenger side, and then just put a filter on the driver side valve cover?

What if I don't want the oil vapors to get in the intake manifold? Should I just run both sides to a vented catch can and then plug the hole on the intake manifold? I guess that's my question. Seems like it'd be easy enough to do, just need to figure out a way to plug the intake manifold.
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Old 06-23-2011, 05:52 PM   #16
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Quote:
Originally Posted by _spyder View Post
...need to figure out a way to plug the intake manifold.
Vacuum caps
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Old 06-23-2011, 06:37 PM   #17
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Quote:
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Vacuum caps
Do yourself a favor and find silicon based vacuum caps. Those O'Reilly auto rubber caps last about 6 minutes under the hot hood before they crack and leak.
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Old 07-03-2011, 04:36 PM   #18
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I just bought a catch can, and just to make sure... I still leave the PCV in and route that hose along with the driver side to the vented can, right? If so, I'll look for those caps and plug that, then I should be good to go.
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Old 07-11-2011, 08:18 PM   #19
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Quote:
Originally Posted by Braineack View Post
Stock PCV, Stock PCV Routing, Stock Breather Routing, Added Check Valve in front of PCV - good for 15psi on teh street
what kind of check valve are you running and where did you get it
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Old 07-11-2011, 09:41 PM   #20
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Spyder you can take the PVC out or drill it out if you want. It doesn't matter. Or just leave it in.

Miata94 just go to any autozone or advance auto and tell them you need check valves. They have a display section. Get whatever fits your hose.
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