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  #581  
Old 19-03-2015, 04:55 PM
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I have a hyperflow 4 port can works very well no oil gets back into intake at all


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  #582  
Old 19-03-2015, 05:11 PM
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Quote:
Originally Posted by s20525xxx View Post
Or u can block the pcv, and vent crank case and head breather to atmosphere.
no way mate...that would not be good.
Venting to atmosphere in a closed vacuum system isn't recommended from what I read and also would result in oil all over your engine bay, and blocking off PCV no way, as that's bringing in positive pressure issues in the crankcase etc etc..


Jacob- hyperflows are awesome but can't find those anymore.
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Last edited by RJ999; 19-03-2015 at 05:20 PM. Reason: typos and wording
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  #583  
Old 19-03-2015, 05:47 PM
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Originally Posted by RJ999 View Post
no way mate...that would not be good.
Venting to atmosphere in a closed vacuum system isn't recommended from what I read and also would result in oil all over your engine bay, and blocking off PCV no way, as that's bringing in positive pressure issues in the crankcase etc etc..


Jacob- hyperflows are awesome but can't find those anymore.
WRONG you can remove the pcv and block off the hole . The crank case and heads vent still into the intake if you have a catch can in line with the intake and venting to atmosphere , the oil will be in the catch can not the engine bay or intake. If you haven't bought a cheap ass catch can that is .
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  #584  
Old 19-03-2015, 05:50 PM
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Venting to atmosphere is illegal tho .
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  #585  
Old 19-03-2015, 05:52 PM
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Originally Posted by RJ999 View Post
no way mate...that would not be good.
Venting to atmosphere in a closed vacuum system isn't recommended from what I read and also would result in oil all over your engine bay, and blocking off PCV no way, as that's bringing in positive pressure issues in the crankcase etc etc..


Jacob- hyperflows are awesome but can't find those anymore.
Oh bugger contact metalcraft get him to custom make one


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  #586  
Old 19-03-2015, 06:11 PM
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Metalcraft or tony's bulk order(his one looks good, good reviews too, waiting on bulk order thread lol)
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Last edited by RJ999; 19-03-2015 at 06:15 PM.
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  #587  
Old 19-03-2015, 08:43 PM
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Firstly, each engine is different, piston clearance can vary, so crankcase pressure is different.

Secondly, pcv constantly sucks oil vapour out of crank breather. When I took off throttle body, I can see a small oil puddle near the pcv nipple.

Thirdly, when I had my catch can, I stuffed it with two stroke engine air filter, it catch very little amount of oil.

Breather wont spill oil every where, oil comea out as vapour. I find different oil have very different blowby characteristics.

Bit it is illegal, but for the sake of the engine. I prefer breather. ARC catch can with breather is very popular on GTRs.

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  #588  
Old 19-03-2015, 09:34 PM
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highly recommend brad stacey for.custom catch can if you go that way
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  #589  
Old 19-03-2015, 10:23 PM
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so racewars.........
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  #590  
Old 19-03-2015, 11:06 PM
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highly recommend brad stacey for.custom catch can if you go that way
Looking at the photos on the site, this lad's work looks first class! Cheers mate.
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Last edited by RJ999; 19-03-2015 at 11:14 PM.
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