Best Catch Can??
04-12-2014, 09:42 PM
#62
The LS6 valley cover does work rather well for relieving the pressure. Sometimes in a situation where you cannot rebuild the engine, you can use a dual catch can setup.
Which tube are you running the catch can on? The driver side or pass side?
The ECU has no idea what extra air is coming in past the MAF and usually it doesnt cause issues with the MAP sensor.
What I would recommend is re-ringing the engine and honing the cyls if they are in spec to run the pistons as is. Id rather use a new set of pistons anyway, but I understand all of that is a large undertaking.
Has anyone wondered how bad blowby is on the rest of the engine and not just the oil mist you get in the intake? That is the only visible sign really.
No one will likely do that though.
I am not sure the cheapest is the best as far as catch cans go, it is just the cheapest.
Which tube are you running the catch can on? The driver side or pass side?
The ECU has no idea what extra air is coming in past the MAF and usually it doesnt cause issues with the MAP sensor.
What I would recommend is re-ringing the engine and honing the cyls if they are in spec to run the pistons as is. Id rather use a new set of pistons anyway, but I understand all of that is a large undertaking.
Has anyone wondered how bad blowby is on the rest of the engine and not just the oil mist you get in the intake? That is the only visible sign really.
No one will likely do that though.
I am not sure the cheapest is the best as far as catch cans go, it is just the cheapest.
04-13-2014, 10:04 AM
#63
What do recommend for a H/C car then? I have the RX can and was getting oil in the intake through the TB tube....so I put on one of their breathers per their recommendation to relieve crank case pressure. From what I understand its a flow controlling check valve that the ECU can compensate for.
04-13-2014, 02:34 PM
#64
The LS6 valley cover does work rather well for relieving the pressure. Sometimes in a situation where you cannot rebuild the engine, you can use a dual catch can setup.
Which tube are you running the catch can on? The driver side or pass side?
The ECU has no idea what extra air is coming in past the MAF and usually it doesnt cause issues with the MAP sensor.
What I would recommend is re-ringing the engine and honing the cyls if they are in spec to run the pistons as is. Id rather use a new set of pistons anyway, but I understand all of that is a large undertaking.
Has anyone wondered how bad blowby is on the rest of the engine and not just the oil mist you get in the intake? That is the only visible sign really.
No one will likely do that though.
I am not sure the cheapest is the best as far as catch cans go, it is just the cheapest.
Which tube are you running the catch can on? The driver side or pass side?
The ECU has no idea what extra air is coming in past the MAF and usually it doesnt cause issues with the MAP sensor.
What I would recommend is re-ringing the engine and honing the cyls if they are in spec to run the pistons as is. Id rather use a new set of pistons anyway, but I understand all of that is a large undertaking.
Has anyone wondered how bad blowby is on the rest of the engine and not just the oil mist you get in the intake? That is the only visible sign really.
No one will likely do that though.
I am not sure the cheapest is the best as far as catch cans go, it is just the cheapest.
I routed mine like the diagram below with the exception of the TB tube for the breather, and I eliminated the stock PCV valve since the RX has one built in.
Yeah it's clean, I blew out all the lines and checked everything but I really wasn't getting any oil in the CC. 90% of it was still going into the intake via the TB tube, which is why I bought the breather. Now, finally it seems to be catching oil like it should.
Last edited by BrntWS6; 04-13-2014 at 02:40 PM.
04-13-2014, 04:25 PM
#65
Using a dual catch can may be more in line for you then.
I am not saying anything is "bad" but I have personally built quite a few engines that have zero need for a catch can. Period.
I am not saying anything is "bad" but I have personally built quite a few engines that have zero need for a catch can. Period.
04-13-2014, 06:10 PM
#66
And I would def look at getting an ls6 valley. The center section of the engine can build pressure as well. It should go into the catch can though since it would be considered dirty air. Even though the bays are supposed to "breathe" between themselves, I have not always seen that to be true.
04-13-2014, 08:45 PM
#68
Yeah, not needing one would be nice. My intake was completely oil soaked when I was just bolt-ons. Noticed when I took my LS6 intake off while doing H/C.
I may look into a dual CC at some point. I was going to put an LS6 valley on when I was doing H/C but I'm just not cutting my block. Thanks for the advice though.
04-14-2014, 10:32 AM
#73
Myself, I prefer a CC that doesn't rely a metal packing material to remove the oil. Something like these:
http://www.intocco.com/images/catchcan.jpg
http://www.camaro5.com/forums/attach...1&d=1327855358
http://www.intocco.com/images/catchcan.jpg
http://www.camaro5.com/forums/attach...1&d=1327855358
04-15-2014, 02:44 PM
#76
I ran the mighty mouse can, it didn't catch all my oil. Might have been my routing, but we worked on it a lot. He has seriously good customer service. He isn't afraid to answer questions or take a refund if you aren't satisfied. His valve cover breather is awesome though. It has a rubber disk inside that floats with any sort of crank case pressure and allows the valve cover to breath and then closes shut in vacuum. I ran my stock pcv and never had to deal with smelly engine bays or oil on the v/c
Do you have work done to your cylinder heads, or aftermarket heads?
What I am getting at is you can easily be oiling the intake from lack of valve seal (depending on the above). Have seen it a lot on well used aftermarket stuff.
Did you find a fix elsewhere?
I am a member here (and thank you all so very much for your support!)
And my cans are available through more than one sponsor here and elsewhere.
for example, Mike has a fresh batch of my barbed pcv can headed his way..
http://www.ws6project.com/user_stor/...oducts_id=6352
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some food for your catch can thoughts
It not possible for any 'closed type' can to not push blow by out the fresh air tube, and is not possible for any 'open type' can to allow for pcv function
My cans such as the one above fix that, they relieve crank pressure while not passing any oil over the fresh air tube, not passing oil out the breather, and while not changing pcv functionality.
