Subject	The lower the pressure in the exhaust, the greater the
Posted by	CaliguyPurdue on February 08, 2006 at 4:54 PM
	This message has been viewed 395 times.
In Reply To	That makes sense as an explaination of the variation, but... posted by JoneZ on February 08, 2006 at 04:47 PM
Message	pressure differential. The greater the differential the higher the flow rate. You can think of it as "sucking" it out if you like although thats not technically correct in any sense.
Follow Ups	Im going to take a conversation over here from technical - SnowManZ 16:20:39 02/08/06 I've seen this happen when switching cars from cats to TP's. - Dave N 16:25:16 02/08/06 I put in dp's and tp's, and they started smoking sometimes, - Waco300zx 16:28:06 02/08/06 mobil 1, I already had test pipes on there before I had - SnowManZ 16:28:52 02/08/06 No, they're still running. I've switched one car to a - Dave N 16:33:38 02/08/06 I'm headed home for the night - if you want to discuss this - Dave N 16:35:33 02/08/06 Down pipes on original turbos (150,000) did cause any... - JoneZ 16:32:22 02/08/06 Were your pre cats gutted? - CrazyGreek 16:36:16 02/08/06 No my pre cats weren't gutted. anything is possible. - SnowManZ 16:40:47 02/08/06 Don't confuse the two. - SactoTodd 16:37:34 02/08/06 Exactly what I was thinking. Not just cats but the AIV - CaliguyPurdue 16:43:51 02/08/06 Seen it a few times before. One of the most rememberable - Ash's Z 16:38:47 02/08/06 That makes sense as an explaination of the variation, but... - JoneZ 16:47:55 02/08/06 The lower the pressure in the exhaust, the greater the - CaliguyPurdue 16:54:32 02/08/06 I am uploading my turbo rebuild images to help answer - Ash's Z 17:01:17 02/08/06 Great explanation! That makes sense to me now - JoneZ 17:12:39 02/08/06 So basically, if you have stock/sp500 turbos, there a chance - Waco300zx 17:47:32 02/08/06 piggyback question... - LJZTT 17:55:25 02/08/06 thats the excact question I wanted to know (n/m) - SnowManZ 18:02:56 02/08/06 That all depends on how worn out the turbos are. - Ash's Z 18:10:58 02/08/06 Well, it isn't isolated to just stockers or sport500s. - Ash's Z 18:01:33 02/08/06 interesting that this is never talked about much... - Waco300zx 00:41:21 02/09/06 expand your search terms in the tech forum. - Spee 01:50:27 02/09/06 I think it has to do with age, condition of the seals. - Spee 16:40:47 02/08/06 Some of them do need backpressure to work properly. - Ash's Z 16:47:42 02/08/06 Should I get some, cats to put ont the testpipes? - SnowManZ 16:57:09 02/08/06 You aren't the first to experience this. It is my opinion - Ash's Z 17:06:20 02/08/06 from what youve seen... - nissanZtt222 17:12:18 02/08/06 There is no specific timeframe. It is all dependent on the - Ash's Z 17:16:46 02/08/06 thanks ash, guess ill just have to hope (n/m) - nissanZtt222 17:18:59 02/08/06 Re:I have close to 5K on my new Sport 500's>>> - racer2fst 17:30:23 02/08/06 Good to hear, Rob. It sounds like you may be past the - Ash's Z 17:33:58 02/08/06 unfortunetly the midpipes are long gone. - SnowManZ 17:16:13 02/08/06 Well, hold in there for my variable backpressure exhaust - Ash's Z 17:19:13 02/08/06 price of your exhaust plus turbos vs turbo's and cats - SnowManZ 17:33:47 02/08/06 well that was probably from the cats, not the seals... - Spee 17:50:10 02/08/06 Oh, I definately agree with you on all of your points. - Ash's Z 17:57:13 02/08/06 clarification... - Spee 18:35:04 02/08/06 Ah - the cats are going to break down SOME of the oil - Ash's Z 18:41:25 02/08/06 that was my stance on why mine started smoking... (n/m) - Waco300zx 00:37:57 02/09/06 I agree and disagree due to my situation. - inf 17:32:47 02/08/06 not sure where to but in here, but although Ash is talking - LJZTT 17:36:28 02/08/06 i am referrin to stockers. we discussed how the 500's - SnowManZ 17:43:51 02/08/06 hmm, well looks like I will be holding onto my current - LJZTT 17:52:35 02/08/06 Exactly. I was using the Sport500s as an example. - Ash's Z 17:52:57 02/08/06 crystal clear now, thanks (n/m) - LJZTT 17:56:40 02/08/06 Alright Ash one more question. Are turbos cooked now, - SnowManZ 18:06:51 02/08/06 Easy answer, YES (on both counts). - Ash's Z 18:10:08 02/08/06 not what I wanted to hear. Why isnt this problem more - SnowManZ 18:18:09 02/08/06 Well, there are downsides to upgrading a vehicle - - Ash's Z 18:39:24 02/08/06 yep, I searched, used the usual keywords, but the - SnowManZ 18:46:53 02/08/06 And you wont see it on other turbo car forums either - SeedyROM 18:59:16 02/08/06 I'd like to think we are more knowledgeable on this forum - Ash's Z 19:11:48 02/08/06 so its true? we are far superior to other car forums? - SnowManZ 19:14:24 02/08/06 Thinly veiled as ever Ash. All hail to you. - SeedyROM 20:28:03 02/08/06 This is not controversial at all. It is very clear-cut. - Ash's Z 20:54:13 02/08/06 I don't think so. - Spee 01:23:05 02/09/06 it's been discussed several times. - Spee 00:58:27 02/09/06 what problem? - Spee 00:55:39 02/09/06 it seems like the info of something like that should be - SnowManZ 01:27:12 02/09/06 are you kidding? - Spee 01:35:37 02/09/06 I have mentioned it several times - ZEngineer 09:46:38 02/09/06 ohhh snap.... I was really excited about finally installing - Southern-Z (Little Rock) 19:32:37 02/08/06 Install the downpipes, install high flow cats. (n/m) - Dustin 19:58:51 02/08/06 Everyone run for the hills, the sky is falling. - SeedyROM 20:29:49 02/08/06 Snowman's car started smoking after installing downpipes. - Ash's Z 20:55:44 02/08/06 **raises hand** me too.. Now my turbo is seized... (n/m) - Waco300zx 00:31:58 02/09/06 mine didn't - Spee 01:42:26 02/09/06 it's not an isolated case *raises hand* (n/m) - ZEngineer 09:51:33 02/09/06 why are being a dick? I came on here - SnowManZ 21:46:51 02/08/06 I find it incredibly interesting that this thread got bumped - Ash's Z 22:25:35 02/08/06 Interesting indeed. The title of the thread, says that - SnowManZ 23:36:47 02/08/06 conspiracy! (n/m) - Spee 01:43:33 02/09/06 Word is the EPA damaged the seals so we'd all run cats! (n/m) - CaliguyPurdue 10:38:07 02/09/06 I think it belongs in Tech - Technomancer 09:10:57 02/09/06 Of course you do - SeedyROM 14:05:31 02/09/06 oh and FWIW - SeedyROM 14:32:11 02/09/06 ugh - Spee 01:28:38 02/09/06 just install them, if the car smokes, put the precats back - LJZTT 21:52:28 02/09/06 spoken like a true TT newbie... - Spee 16:17:17 02/10/06 I'd be curious to know if there is a link to this situation - Dave N 09:26:49 02/09/06
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