Subject	H-Pipe theory. The higher the velocity of the exhaust>>
Posted by	not-hrz on January 05, 2002 at 11:36 AM
	This message has been viewed 587 times.
In Reply To	H-pipe is better than X-pipe! >>> posted by FLY 1 (Dallaz) on January 05, 2002 at 04:01 AM
Message	the higher the vacuum will be in the H-pipe. This is the same principle as a spray gun, air flows over the pipe going into the fluid and pulling it up into the air stream. At lower RPMs, there will be less exhaust gas passing the H-pipe and will relieve some of the pressure in the exhaust. But at higher RPMs, the volume and speed of the exhaust will increase. When passing the H, it will create a vacuum in the cross pipe creating turbulance at the H. Both side of the exhaust are trying to pull gas out of the cross-over pipe. My theory is with a H-pipe, lower RPMs power will increase, but at higher RPMs a H-pipe will hurt performance. The length of the cross-over pipe will affect performance at different RPM ranges. The X-pipe will increase performance at all RPM ranges. Just my theory. Shoot holes in it if you can. I'm always willing to learn.
Follow Ups	Pictures of Specialty-Z's (Greg Dupree) custom X-pipes - Playboy 01:26:08 01/05/02 how much? (n/m) - MisterZ(OKC) 01:29:48 01/05/02 <<<<<<<look in classifieds (n/m) - snoguitar 01:30:32 01/05/02 as usual... very nice and functional =) (n/m) - NIZZAN 02:38:21 01/05/02 H-pipe is better than X-pipe! >>> - FLY 1 (Dallaz) 04:01:04 01/05/02 My take on this (just theory) - Turbodog (CT) 07:29:02 01/05/02 AND in fact, you would want the "X" cross section to be same - AshsZ (G'Ville Fab Whore!) 09:30:43 01/05/02 You need to see pics of the inside (n/m) - StEaMyZ(ZtoyZ.NET©) 12:58:34 01/05/02 dyno test rpove h pipes(x pipes) rob hp>>>> - willflow 21:16:31 01/05/02 H-Pipe theory. The higher the velocity of the exhaust>> - not-hrz 11:36:02 01/05/02 Check out this link - F8IZHIS 15:02:18 01/05/02 The "X" angles aren't right. >>> - AshsZ (G'Ville Fab Whore!) 09:26:33 01/05/02 The exaust gas will mix in the center of the X - Specialty-Z 11:26:13 01/05/02 Don't ever sweat ASH, while his heart is good, his math isnt - ni[x]it 11:34:30 01/05/02 If I didn't already have a X-pipe, I would buy Greg's - not-hrz 11:42:32 01/05/02 Thanks Tony! I had never seen the B&B 2 1/2" .... - Specialty-Z 12:01:22 01/05/02 This is a first prototype X pipe for the Z32........ - Specialty-Z 12:25:20 01/05/02 also turbo motor's tend to have less exaust pulse..... - Specialty-Z 12:56:45 01/05/02 What about just straight pipe out to eliminate the X or H? (n/m) - ZilverTT 00:41:33 01/06/02 Re: What about just straight pipe out to eliminate the X or - Specialty-Z 01:41:05 01/06/02 Here is the Stillen X-pipe - socos 14:17:10 01/05/02
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