Subject	generally you'll find that the positive pressure
Posted by	soulpwr on April 19, 2011 at 8:29 PM
	This message has been viewed 1269 times.
In Reply To	So let me get this straight.... posted by Serg300zx on April 19, 2011 at 06:10 PM
Message	in high performance setups is significant and can cause all sorts of problems as well as rob hp. This problem can be even worse in turbo motors. Remember, the pcv system was designed for stock hp levels and in some cases isn't adequate even then. I've built non turbo street engines that would blow the dipstick out because of this pressure. That's why you'll find guys that run vented setups with -8,-10, or -12 AN fittings plumbed to a sump breather to vent off the pressure band collect the oil that's left behind. Some guys even use a drain back from the bottom of the tank that is routed back into the oil pan to increase efficiency
Follow Ups	PCV System, Explained, Deleted >>> - Ash's Z 16:21:23 04/19/11 awesome write up... - Madhatter10-6 16:31:43 04/19/11 Interesting... (n/m) - ForceFedTT (SoCal) 16:36:03 04/19/11 Ingenuity at its finest right here.... Makes me wonder... - samsungz 16:47:30 04/19/11 Z-Shotta! - zgene4 17:30:02 04/19/11 You rang my lord? :) (n/m) - samsungz 17:36:47 04/19/11 crap (n/m) - zgene4 17:40:35 04/19/11 Your about 48hrs late to the party, your dinner is in the... - samsungz 18:08:03 04/19/11 speakeing of late, have your turbos been released yet? - zgene4 18:15:29 04/19/11 Negative Ghost Rider, it's a recession, there is BIG $.... - samsungz 18:37:44 04/19/11 Personally I did Woody's Re-Route, but I am liking this alot (n/m) - Zinn2win 16:48:51 04/19/11 They are 2 different things. - Woody75 (Denver) 07:48:26 04/20/11 What effect would keeping the Woody75 re-route + venting - KevinZtwin 11:02:25 04/20/11 You make it sound so simple...is there really no downside to - Wright (Ca) 16:57:11 04/19/11 and is it really so simple with the motor in the car? (n/m) - blackomega 16:59:52 04/19/11 It really isn't all that bad. Of all the steps, the hardest - Ash's Z 17:49:48 04/19/11 (well, i bookmarked it) oil catch can vs filter - blackomega 23:48:52 04/19/11 there are downsides to this - aliaZ 18:08:10 04/19/11 I understand moisture being a problem, but can you explain - zgene4 18:18:14 04/19/11 there is no active ventilation to purge blowby gasses - aliaZ 22:12:13 04/19/11 wouldn't an oil catch can would be better than a filter ? (n/m) - The Devils Z 17:10:12 04/19/11 Yes. - KongZTT GT28RS MD 17:18:18 04/19/11 I cannot speak to how the crankcase is configured on an - Ash's Z 17:42:39 04/19/11 It wasn't alot of oil that came out.. but I hated - KongZTT GT28RS MD 19:41:26 04/19/11 post in technical so we can VTF (n/m) - MrOzzie5183 17:13:18 04/19/11 I will put together a full writeup on this process in the - Ash's Z 17:47:56 04/19/11 Agreed, I got rid of it on my car a long time ago. (n/m) - Russell@Z1 17:28:36 04/19/11 Re: PCV System, Explained, Deleted >>> - ouikikazz 18:06:50 04/19/11 So let me get this straight.... - Serg300zx 18:10:46 04/19/11 generally you'll find that the positive pressure - soulpwr 20:29:02 04/19/11 The VG head has ports where the pressures SHOULD - KongZTT GT28RS MD 20:36:08 04/19/11 Am I understanding your logic? - enthuZiast 19:03:29 04/19/11 Re: Am I understanding your logic? - enthuZiast 19:09:05 04/19/11 Re: Re: Am I understanding your logic? - Dallas DamonZ 08:39:16 04/20/11 thanks for the info, I think I'll still go with a catch can - FuerGrissa 19:17:40 04/19/11 Re: thanks for the info, I think I'll still go with a catch can - enthuZiast 19:20:58 04/19/11 SZ has been doing this for a while...except the filter part - ZonaZ 19:20:10 04/19/11 same here, I did mine like this following Piranha's and your - DarkZide 20:27:18 04/19/11 no issues yet? - aliaZ 22:29:37 04/19/11 I am more worried about oil entering my plenum and - DarkZide 23:33:28 04/19/11 all engines have blow-by - aliaZ 05:55:21 04/20/11 Good job DarkZide... glad it worked out for you :) (n/m) - Piranha 18:11:59 04/20/11 I've had mine deleted for over 40k miles. - xpwarrior 20:22:57 04/19/11 2nd the 1/4" BSPT plugs, correct thread (n/m) - ZonaZ 21:20:42 04/19/11 British thread is hard to find! - zfreak(Dallas) 21:35:17 04/19/11 have you had an oil analysis done? - aliaZ 22:20:43 04/19/11 No I haven't done an oil analysis but.. - xpwarrior 08:50:25 04/20/11 I did this and oil got contaminated quickly - sparkie 02:02:28 04/20/11 Exactly! - DVDBURN (MD) 03:39:48 04/20/11 Good link ty (n/m) - ztunerz 04:15:13 04/20/11 agreed (n/m) - aliaZ 05:47:02 04/20/11 I change my oil every 3K miles. If your oil doesn't smell - Ash's Z 08:26:02 04/20/11 The advantages are not clear cut to me... - Zarcasm(Hfd, CT) 10:13:42 04/20/11 Fuel in the oil will reduce lubircity and accelerate wear. (n/m) - BigTDogg (MA) 10:41:32 04/20/11 Understood. But the question here is how much is too much? - Ash's Z 10:53:26 04/20/11 IMHO, I'm not buying the value of deleting it. Just IMO (n/m) - BigTDogg (MA) 11:03:31 04/20/11 Give Greg D a call and your opinion will change :) (n/m) - Piranha 21:06:00 04/20/11 the only objective way to assess the impact of deleting the - aliaZ 11:26:48 04/20/11 ^^^^^ This is the best advice! (n/m) - MixManMash 11:46:01 04/20/11 This same topic is no different than the underdrive pulley - Ash's Z 11:47:45 04/20/11 Except oil analysis is much easier than long-term harmonics - SeedyROM 18:47:43 04/20/11 I honestly haven't looked into oil analysis before but it - Ash's Z 20:59:03 04/20/11 It certainly depends on what they measure and how - SeedyROM 04:14:36 04/21/11 Yes, you are right. :) Unfortuantely it would be a pain to - Ash's Z 07:36:57 04/21/11 pretty straightforward - vorpalZ 10:33:40 04/21/11 Nice - thanks for the info! :) (n/m) - Ash's Z 12:25:07 04/21/11 Will your accordion replacements still have the port - BigTDogg (MA) 06:36:37 04/20/11 Its an option. (n/m) - ZiNnYc 08:01:35 04/20/11 Question here... - MrOzzie5183 10:11:06 04/20/11 that is what I did - aliaZ 10:31:52 04/20/11 When the PCV valves are - xpwarrior 10:46:47 04/20/11 I was thinking the same thing. (n/m) - Wright (Ca) 11:56:09 04/20/11 correct (n/m) - aliaZ 13:05:17 04/20/11 Another pro for MAP (n/m) - ztunerz 17:41:03 04/20/11 wouldn't the oil still get sucked in from the exhaust VC's? - ali300zx 10:47:17 04/20/11 yes (n/m) - aliaZ 13:06:20 04/20/11 Nice, writeup. Did this on a number of Z's in the past, and - Milo (SATX) 13:03:36 04/20/11 Re: Nice, writeup. Did this on a number of Z's in the past, and - aliaZ 13:12:09 04/20/11 Agreed. There are plenty of examples of cars running - Ash's Z 13:51:00 04/20/11 fair enough (n/m) - aliaZ 14:33:16 04/20/11 If it's that important to you - xpwarrior 16:09:50 04/20/11 you would need a before/after analysis - aliaZ 17:44:41 04/20/11 You seem to be the one trying to prove that the oil will - KevinZtwin 18:07:06 04/20/11 not really - aliaZ 19:36:01 04/20/11 The reports from Blackstone Labs - xpwarrior 18:27:48 04/20/11 I've talked about doing a pcv delete with friends - spdrmn15 19:21:48 04/20/11 My biggest concern is the coating within the intercoolers - Ash's Z 20:47:04 04/20/11 Maybe I wasn't very clear. - spdrmn15 21:28:32 04/20/11 Yes, that is quite a bit different. :) I actually saw a - Ash's Z 07:58:58 04/21/11 I think the main benefit of applying a vacuum to - aliaZ 10:52:45 04/21/11
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