Hanaldo Posted March 21, 2012 Share Posted March 21, 2012 make sure you keep the restrictor in the breather hoses, it is there for a reason Do all RB engines have that or just 26's? When I setup my breather system I looked for a restrictor in the stock breather hoses and there was nothing... Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284257 Share on other sites More sharing options...
iruvyouskyrine Posted March 21, 2012 Share Posted March 21, 2012 Do all RB engines have that or just 26's? When I setup my breather system I looked for a restrictor in the stock breather hoses and there was nothing... As far as i know its only the 26 that has that on there, i know my 20 doesn't and i'm fairly confident the 25 doesn't either. I highly suggest you read this, as it has pretty much all the answers to your questions http://www.skylinesaustralia.com/forums/topic/314402-project-rb31dett-the-development-of-my-open-deck-rb-engine-and-the-quest-for-more-torque/page__view__findpost__p__6039475 Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284377 Share on other sites More sharing options...
blind_elk Posted March 21, 2012 Share Posted March 21, 2012 (edited) Will this be efficient? *excluding the breather though. No!. All this is doing is blowing the exh side gasses straight back to the turbo intake, totally defeating the purpose of installing the catch can - more correctly "oil-air-separator".Leave the "U" hose connecting the 2 rocker covers. Disconnect the hose going from the exh cover down to the intake side of the turbo, and re-direct that to the catch can. Run the other fitting on the catch can back to the inlet side of the turbo. Simple. Edited March 21, 2012 by blind_elk Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284455 Share on other sites More sharing options...
BOOZTJUNKEY Posted March 21, 2012 Share Posted March 21, 2012 Do all RB engines have that or just 26's? When I setup my breather system I looked for a restrictor in the stock breather hoses and there was nothing... My 20 had a brass restrictor in the return pipe to the intake for the factory breather setup Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284464 Share on other sites More sharing options...
Hadouken Posted March 21, 2012 Author Share Posted March 21, 2012 No!. All this is doing is blowing the exh side gasses straight back to the turbo intake, totally defeating the purpose of installing the catch can - more correctly "oil-air-separator". Leave the "U" hose connecting the 2 rocker covers. Disconnect the hose going from the exh cover down to the intake side of the turbo, and re-direct that to the catch can. Run the other fitting on the catch can back to the inlet side of the turbo. Simple. Thanks alot man. That's all I wanted to know haha. Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284530 Share on other sites More sharing options...
joeyjoejoejuniorshabadoo Posted March 21, 2012 Share Posted March 21, 2012 my setup is both rocker covers to can pcv deleted intake blocked rocker to plenum remaining can to atmo Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284534 Share on other sites More sharing options...
Hadouken Posted March 21, 2012 Author Share Posted March 21, 2012 See, I don't want to vent the can. Keeping it as legit as possible. Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284609 Share on other sites More sharing options...
zebra Posted March 21, 2012 Share Posted March 21, 2012 Then you will need baffles inside the can. An empty can is about as effective as not running one at all Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284614 Share on other sites More sharing options...
Hadouken Posted March 21, 2012 Author Share Posted March 21, 2012 Indeed the good old steel wool in a stocking will be going inside the can. Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284640 Share on other sites More sharing options...
Manuel Kasko Posted March 22, 2012 Share Posted March 22, 2012 One does not simply open the can Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284664 Share on other sites More sharing options...
SiR_RB Posted March 22, 2012 Share Posted March 22, 2012 On my old gtr I had the autech style oil/air separator that sits ontop of the cam covers, My new gtr has the pcv blocked, oil return to turbo inlet blocked and just running 2 hoses from cam covers to an atmo catch can, anything wrong with this besides been illegal? Not a huge fan of this setup but that catch can/washer bottle fills the spot where the battery was (battery is relocated to boot) Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284700 Share on other sites More sharing options...
black bnr32 Posted March 22, 2012 Share Posted March 22, 2012 block pcv block intake hoses from cam covers to check valve, check valve to exhaust http://vibrantperformance.com/catalog/index.php?cPath=1022_1070_1340 Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284772 Share on other sites More sharing options...
destrukshn Posted March 22, 2012 Share Posted March 22, 2012 Get the Nismo one and it will look nice and clean Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284787 Share on other sites More sharing options...
Hadouken Posted March 22, 2012 Author Share Posted March 22, 2012 Give me 700 bux and I'll get it Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284868 Share on other sites More sharing options...
KiwiRS4T Posted March 22, 2012 Share Posted March 22, 2012 The advantage of having the catch can breather connected to an intake is that it creates suction and helps clear the vapours better. This requires a proper catch can which functions as an oil/air seperator or a seperate oil /air seperator (you don't have to buy the Nismo ones - Moroso do them cheaper or you could have one fabricated) in the line. If you are having a catch can made you can specify proper baffling. Some catch cans have removable tops and bottoms and you can check and modify them yourself if necessary. Some ebay catch cans are so small and useless as to be for show only. If you have heaps of blow by for what ever reason and the catch can set up you have is not coping then you will not want to feed this into your intake. Preferably you will fix the problem or modify your system to deal with it but (in NZ anyway) you can vent to atmosphere for track cars. I have seen the engine bays of a number of Japanese race cars that have air oil seperators and one or two catch cans and run the breathers into the intake. Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6284937 Share on other sites More sharing options...
Hanaldo Posted March 22, 2012 Share Posted March 22, 2012 (edited) Indeed the good old steel wool in a stocking will be going inside the can. This does f**k all, trust me. It's more likely to leave you with bits of disintegrated stocking and metal fibers in your intake then separate any oil from the air. You have a GTR, give it the parts it deserves and get a properly baffled catch can. I got my custom combined 2L catch can/radiator overflow bottle from Pro Fabrications for $390 delivered, Brad is a good bloke and knows exactly what he is doing. Spend a bit more cash and do it right. Edited March 22, 2012 by Hanaldo Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6285226 Share on other sites More sharing options...
UWISSH! Posted March 22, 2012 Share Posted March 22, 2012 i have a catch tank just like the one above n seems to work well. i have a drain hole at the bottom of the can and i also have a spare fitting on the bottom of my extended sump. if i was to run a braided line from the can directly to the sump would this be effective? or will oil from my sump just run up that line back towards the can? Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6285259 Share on other sites More sharing options...
Risking Posted March 22, 2012 Share Posted March 22, 2012 When we do a sump & catch can for the same vehicle I always suggest a breather hose from a high point of the sump above oil level to the base of the catch can. It just provides a better vent for the crankcase not a drain for the catch can. Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6285624 Share on other sites More sharing options...
Hadouken Posted March 22, 2012 Author Share Posted March 22, 2012 This does f**k all, trust me. It's more likely to leave you with bits of disintegrated stocking and metal fibers in your intake then separate any oil from the air. You have a GTR, give it the parts it deserves and get a properly baffled catch can. I got my custom combined 2L catch can/radiator overflow bottle from Pro Fabrications for $390 delivered, Brad is a good bloke and knows exactly what he is doing. Spend a bit more cash and do it right. I was waiting for this quote. Obviously Im looking for my best option. Not OH MY GOD NIIIIISSSSSMMMMOOOOOOO! haha. Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6285668 Share on other sites More sharing options...
XRATED Posted March 22, 2012 Share Posted March 22, 2012 Will this be efficient? *excluding the breather though. Thats going to do nothing but lean out the rear 3 cyliners!!!!!!!!! Link to comment https://www.sau.com.au/forums/topic/395481-so-how-do-i-want-to-setup-my-catch-can/page/2/#findComment-6285734 Share on other sites More sharing options...
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