Subject	It's impossible to have the same efficiency from a smaller
Posted by	Scotts94z32 on January 21, 2003 at 1:30 PM
	This message has been viewed 56 times.
In Reply To	1500.00? Are you kidding me, you'll never get the money out> posted by ZBlacktt on January 21, 2003 at 12:57 PM
Message	diameter pipe. That's just the pure mathematics about it. Air flow is air flow. Compressed, HOT, air needs room to move, the added surface area accomodates that. Since the surface area increases as a SQUARE of the radius [A=(pi)r*r], the surface area in a 2.5" downpipe is 4.90sqin. The surface area for a 3" downpipe is 7.07sqin, or 144% more surface area. It makes sense if you think about it, doesn't it? These are stainless steel of course... Nissan Z-cars - the best cars ever built... Go Turbo, or go home Bigger Downpipes = Bigger Man (and faster Z!) Scott Performance in Santa Clara Rocks!
Follow Ups	downpipe question.. - MannyB 11:11:32 01/21/03 I would get greg's unless you are upgrading turbos, THEN - Chip(GinnMotorsports) 11:26:36 01/21/03 Scott Performance downpipes are in the 1500.00 - MannyB 11:34:37 01/21/03 That's a lot of cash to dish out for DP's - U ZCREAM (TTZ in '03) 12:06:01 01/21/03 HKS? Since when did they make downpipes? - Chip(GinnMotorsports) 12:21:13 01/21/03 1500.00? Are you kidding me, you'll never get the money out> - ZBlacktt 12:57:57 01/21/03 It's impossible to have the same efficiency from a smaller - Scotts94z32 13:30:15 01/21/03 Ok, seeing that it must makes sence had 3" pipes for > - ZBlacktt 14:00:38 01/21/03 honestly, I do. Did you measure the backpressure before or - Scotts94z32 14:26:02 01/21/03 LOL,,, yea I can picture that,,lol. - ZBlacktt 14:36:57 01/21/03 awesome... I have pix of them installed, you can see how the - Scotts94z32 14:52:02 01/21/03 Here's dyno sheets to compare at 17psi :) - ZBlacktt 15:48:47 01/21/03 max tq at 4300 RPM in 4th. Mine is about 1100RPM lower,BUT! - Scotts94z32 17:00:40 01/21/03 How on Earth is yours 1100rpm's and a turbo car? - ZBlacktt 17:29:37 01/21/03 no no, 1100 RPM LOWER. 15psi of boost at 3100-3200 RPM vs - Scotts94z32 18:04:48 01/21/03 I dont know what you have for power,,LOL? (n/m) - ZBlacktt 19:38:26 01/21/03 He is talking peak boost and you are talking peak torque - Chip(GinnMotorsports) 19:11:34 01/21/03 very true - good point. They are not nec'y the same, but - Scotts94z32 12:55:51 01/22/03 no not really - SteamyZ(ZtoyZ.NET) 21:53:01 01/21/03 I haven't seen 3" divorced downpipes advertised anywhere, - Scotts94z32 12:44:15 01/22/03 WoW those are some big diameter DPs! - TARGETZ 11:34:54 01/21/03 OK, everybody Hold up and Read! :) - Scotts94z32 13:21:54 01/21/03 BTW, I also have 3" downpipes, so it is possible to fit. - Chip(GinnMotorsports) 13:54:38 01/21/03 very true.... we have them, just need to upload. Thanks... (n/m) - Scotts94z32 14:00:05 01/21/03 Email them to me, I will host for a few days. (n/m) - Chip(GinnMotorsports) 15:21:00 01/21/03 thanks...will do first thing tomorrow... you'll post them - Scotts94z32 16:57:31 01/21/03 lol................... - TARGETZ 15:39:35 01/21/03 I can assure you, 3' DP's will NOT fit, even with custom f - Scotts94z32 16:56:42 01/21/03 Man, had them on since 1999 :) (n/m) - ZBlacktt 14:07:36 01/21/03 Read his original post :-) - TARGETZ 15:41:05 01/21/03 LOL.... I think where slow today as well.....lol :) (n/m) - ZBlacktt 15:49:45 01/21/03 My Decision is Made(thanks for the help) - MannyB 15:27:31 01/21/03 Are there girls on this board???? Yea, Jack B ;)~ (n/m) - ZBlacktt 15:51:02 01/21/03 I'll be passin' u. lol :). Where did you decide to get all - Scotts94z32 16:54:36 01/21/03 Not if I'm on a gixxer 1000 you wont. - MannyB 18:08:28 01/21/03 very true about the GSX-R. Good luck with your work, be - Scotts94z32 18:17:17 01/21/03 Manny: It seems like SP already ordered your clutch! You - Scotts94z32 18:37:13 01/21/03 Only cuz his pockets will be faster - SteamyZ(ZtoyZ.NET) 21:49:36 01/21/03 a stage III Z that runs high 12 1/4's? Not worth it? Bite - Scotts94z32 10:18:12 01/22/03
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