Subject	2.5 is what you want ideally
Posted by	SeedyROM on October 05, 2003 at 4:32 AM
	This message has been viewed 91 times.
In Reply To	2.25" downpipe and testpipe question...couldn't find much posted by 350Z on October 05, 2003 at 03:48 AM
Message	Your post confuses me though. You mention wanting to go smaller but then you say "I've heard some things about turbulence and stuff with too small of downpipes". Did you mean to say too LARGE of downpipe? If so, that is accurate...you don't get more turbulence from smaller piping...at least not usually (for those of you knit pickers, I know it IS possible on some cars/setups to get turbulence with smaller pipes, but we're talking about Z cars with stock pipes/turbos to start). Truth be told, 2.25" pipe would probably be fine on a mildly modified Z car with downpipes and test pipes but there are two things with this: 1) It has been proven both on a dyno and by many others in the seat of the pants that 2.5" TP/DPs are just fine, decrease lag and increase power. 2) Even if you wanted 2.25" DPs, there aren't many people that make them (if any at all as I have not seen any). I can't think of one logical reason to try to get 2.25" downpipes at all. Is there more you want to know about how they work or anything? I'll help out any way I can :) My 300Zs: www.zheaven.com - Have a question about either of my 300ZXs? Answers lie within. Admin: www.350ZForum.com - Your source for the lastest info on the new Nissan 350Z! Writer: www.SportZMagazine.com - Nothing but Z cars from cover to cover! Subscribe today! Moderator: www.TwinTurbo.net - Hands down, the best site for 90-96 Z car info and discussion!
Follow Ups	2.25" downpipe and testpipe question...couldn't find much - 350Z 03:48:14 10/05/03 2.5 is what you want ideally - SeedyROM 04:32:20 10/05/03 *deep breath* I knew you'd say this... - Scotts94z32 07:41:50 10/05/03 Cool sig, one of his better ones IMHO - colocomp (Denver) 08:03:04 10/05/03 thanks.. ditto to yours... (n/m) - Scotts94z32 13:14:28 10/05/03 do you have any pics of your DP's? (n/m) - aliaZ 08:34:55 10/05/03 yes, at work.. email me and I'll send them to you (n/m) - Scotts94z32 13:14:52 10/05/03 One SECOND in the 1/4???? Just from DP???? That is hard - unluky 09:25:21 10/05/03 I agree (n/m) - ImTheDevil 09:52:55 10/05/03 Agreed. (n/m) - SooperZ95 10:33:13 10/05/03 I call BS.. (n/m) - ibpimpn 12:44:23 10/05/03 stand by, I'm going to respond to Nick's post with some of - Scotts94z32 13:16:40 10/05/03 just an FYI, *NO EFFING WAY* - ni[X]it 11:10:11 10/05/03 Re: just an FYI, *NO EFFING WAY* - JokerF_15 11:35:51 10/05/03 I ain't no engineer (I did stay at H.I. last night tho!) but - FLYT300 11:47:08 10/05/03 I can handle that... some data inside>>> - Scotts94z32 13:50:13 10/05/03 Nice post - very well put and stated your case. Good job (n/m) - unluky 09:38:52 10/06/03 My lawyer helped me... ;) thanks... (n/m) - Scotts94z32 12:11:01 10/06/03 Exactly. 3" may not be terrible or bad per se - SeedyROM 16:43:39 10/05/03 Scott, let these people use 2.5". I agree with you - Stealth021 13:13:45 10/05/03 ROFLMAO... you must have read some good magazines lately. (n/m) - ni[X]it 13:25:53 10/05/03 How are you coming up with these back pressure figures? (n/m) - ibpimpn 13:31:56 10/05/03 its pretty common to weld a bung onto the exhaust - ni[X]it 13:41:11 10/05/03 Thanks... (n/m) - ibpimpn 13:43:37 10/05/03 Same how we did mine... I think we'd have good conversation - Scotts94z32 13:56:05 10/05/03 I don't live in Texas. :( (n/m) - ni[X]it 14:33:18 10/05/03 please update your profile... Chicago or some shit now? (n/m) - Scotts94z32 02:25:53 10/06/03 TX is big...where you gonna be? (n/m) - ChristopherTheOne 14:44:02 10/05/03 Houston area at the least.. later this month ... (n/m) - Scotts94z32 02:27:35 10/06/03 Give a shout if you're coming near Austin! (n/m) - ChristopherTheOne 11:27:23 10/06/03 we do need to meat up..... - Adam(houston) 14:53:26 10/05/03 I'll be by you... Most Supes are single turbs though... (n/m) - Scotts94z32 02:28:30 10/06/03 You WILL make more peak horsepower with 3" - SeedyROM 16:28:12 10/05/03 When I get my TTZ we meet at strictly dyno... - Stealth021 23:11:32 10/05/03 Why not put 4" pipes on there then? - SeedyROM 02:26:15 10/06/03 Sorry man, you do what you want, I know the science - SeedyROM 16:26:15 10/05/03 Fair enough.. you are right, I am ONE example... it's all - Scotts94z32 01:50:00 10/06/03 My Z seems to run fine with my old-school RT 3" DPs. (n/m) - Chip(GMS Racing) 21:26:07 10/05/03 Chip is proof... (n/m) - Stealth021 23:12:27 10/05/03 I would not go that far. - Chip(GMS Racing) 11:46:26 10/06/03 That's all I've been preaching as well... (n/m) - Scotts94z32 12:58:44 10/06/03 Well, Mine is manifolds back 2.5"... - BooZTT (Hawaii) 12:06:34 10/05/03 one more time.....lol - ZBlacktt 17:55:38 10/05/03
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