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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Stepped\s+Headers\s*$/: 26 ]

Total 26 documents matching your query.

1. Stepped Headers (score: 1): Author: "Ed Van Scoy" <lsr128@msn.com>; Date: Sat, 6 Mar 2004 20:04:46 -0700; I am on another "list" and an interesting discussion broke out... The value (or lack of) stepped headers. The conclusion of that group's "expert" is that they are worthless. He cites this link http:/; /html/land-speed/2004-03/msg00073.html (7,535 bytes)
2. Re: Stepped Headers (score: 1): Author: Doug Odom <dlodom@charter.net>; Date: Sat, 06 Mar 2004 20:21:59 -0800; Ed, I had a long talk with Don Schoenfeld at the PRI show a couple years ago about stepped headers. He has done a lot of dyno testing of them. The best ones make about 8 to 10 more HP than non step t; /html/land-speed/2004-03/msg00075.html (8,302 bytes)
3. RE: Stepped Headers (score: 1): Author: "Dave Dahlgren" <ddahlgren@snet.net>; Date: Sun, 7 Mar 2004 07:28:22 -0500; I would start with this. Using words like 'worthless' and 'required' is the same as using 'never' and 'always'. Fairly dangerous thing to do in engineering. I did read most of the site with great int; /html/land-speed/2004-03/msg00076.html (9,576 bytes)
4. Re: Stepped Headers (score: 1): Author: "piggy" <piggy@accessatc.net>; Date: Sun, 7 Mar 2004 07:55:58 -0500; i think from all my reading / experience over the years ( 57 ) that header science is just not pure science but more part black art / part science. that said i think each engine responds to different; /html/land-speed/2004-03/msg00077.html (8,196 bytes)
5. RE: Stepped Headers (score: 1): Author: "Dave Dahlgren" <ddahlgren@snet.net>; Date: Sun, 7 Mar 2004 08:37:51 -0500; That is an interesting viewpoint. Did it ever occur to you that most things we take for granted now would have been considered magic and or a black art 100 years ago yet there are good engineering so; /html/land-speed/2004-03/msg00078.html (9,367 bytes)
6. Re: Stepped Headers (score: 1): Author: "Ed Van Scoy" <lsr128@msn.com>; Date: Sun, 7 Mar 2004 11:09:01 -0700; As you mention, Don has had plenty of time on the dyno to formulate an opinion..... There have been several times when I have looked to the right of the decimal point and wished I had 10 more horses.; /html/land-speed/2004-03/msg00079.html (9,453 bytes)
7. RE: Stepped Headers (score: 1): Author: "Dave Dahlgren" <ddahlgren@snet.net>; Date: Sun, 7 Mar 2004 13:23:24 -0500; I have never bought into the back pressure theory making things better. I will buy into having too much exhaust cam though or the wrong lobe separation for the cylinder head. It is the reason many ne; /html/land-speed/2004-03/msg00080.html (9,532 bytes)
8. Re: Stepped Headers (score: 1): Author: W S Potter <wester6935@comcast.net>; Date: Sun, 07 Mar 2004 18:12:55 -0700; We have a local guy, specializes in exhaust systems, "Doc Gas", He changed the sound of Daytona for NASCAR with his crossover pipe. Interesting how many now use it. He takes a very scientific approac; /html/land-speed/2004-03/msg00086.html (10,569 bytes)
9. Re: Stepped Headers (score: 1): Author: Ray Buck <rbuck64@comcast.net>; Date: Sun, 07 Mar 2004 21:23:51 -0700; Boyd Butler. I have one of his X pipes on my El Camino. My son dated his daughter for years. Very interesting man. Very heavy into the scientific analysis of fluid dynamics. Ray; /html/land-speed/2004-03/msg00091.html (9,644 bytes)
10. Re: Stepped Headers (score: 1): Author: Flowbench@aol.com; Date: Mon, 8 Mar 2004 00:45:48 EST; << I don't buy it & would love to hear what YOU experts I have been running them for years (around '83) And even used 'em on your engine the other day Ed. Mike; /html/land-speed/2004-03/msg00092.html (8,397 bytes)
11. Re: Stepped Headers (score: 1): Author: "Keith Turk" <kturk@ala.net>; Date: Mon, 8 Mar 2004 04:24:52 -0600; Mike I'm surprised Ed didn't have to send you his headers for the dyno time.... Dave wants everything the car runs on the course... Keith ( he did let me keep the valve stem caps last time ) -- Origi; /html/land-speed/2004-03/msg00093.html (9,091 bytes)
12. Re: Stepped Headers (score: 1): Author: W S Potter <wester6935@comcast.net>; Date: Mon, 08 Mar 2004 08:22:57 -0700; Thought I remembered Dave saying something about the valve caps being the only things Keith couldn't screw up on the Berk. Is that the way you remember it too? That could explain a lot of things ...; /html/land-speed/2004-03/msg00094.html (9,640 bytes)
13. Re: Stepped Headers (score: 1): Author: "Glen Barrett" <speedtimer@charter.net>; Date: Mon, 8 Mar 2004 07:47:58 -0800; The only reason is KT don't know if they are left or right hand threads. The Brits used to etch it on their spinner hub caps as right hand undo. I don't think he would be able to read the small prin; /html/land-speed/2004-03/msg00095.html (9,452 bytes)
14. Re: Stepped Headers (score: 1): Author: Bryan Savage <basavage@earthlink.net>; Date: Mon, 08 Mar 2004 13:34:33 -0800; I'll see if I can get copies from my friend at the CIA. I've heard they tape him 24X7. They still can't figure out what he's doing. Hiding stuff in fake rocks and strange looking cars?? He even dres; /html/land-speed/2004-03/msg00097.html (9,204 bytes)
15. Re: Stepped Headers (score: 1): Author: "Glen Barrett" <speedtimer@charter.net>; Date: Mon, 8 Mar 2004 16:16:58 -0800; Keith thinks he is STELTH and can't be seen. All one has to do is follow the cigarette butts and coke cans. I heard Dave duck tapes his pack of smokes shut while he is visiting his shop. We all know; /html/land-speed/2004-03/msg00099.html (10,419 bytes)
16. RE: Stepped Headers (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Mon, 8 Mar 2004 09:53:27 -0600; It seems to me that a series of dynamometer tests could settle this "stepped header" question once and for all. Regards, Neil Tucson, AZ; /html/land-speed/2004-03/msg00100.html (8,330 bytes)
17. Re: Stepped Headers (score: 1): Author: "Ed Van Scoy" <lsr128@msn.com>; Date: Sun, 7 Mar 2004 11:04:35 -0700; Dave, You said the magic word in your last sentance - torque. Naturally this is why we (some of us) are willing to spend large sums for custom designed exhust rather than $69.00 headers from J.C. Wh; /html/land-speed/2004-03/msg00101.html (8,468 bytes)
18. Re: Stepped Headers (score: 1): Author: Bryan Savage <basavage@earthlink.net>; Date: Tue, 09 Mar 2004 11:12:23 -0800; The problem I see with the dyno test is it only yields one piece of power information. As Dave has said (I hope I get this right) what is important is the way the horse power curve fits between the; /html/land-speed/2004-03/msg00102.html (9,278 bytes)
19. RE: Stepped Headers (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Tue, 9 Mar 2004 13:42:59 -0600; Actually we are in agreement. A good dyno test will give both the BHP & torque curves over the full RPM range of the engine. Once that is known, you have the info you need to do a comparison or dete; /html/land-speed/2004-03/msg00103.html (10,003 bytes)
20. Re: Stepped Headers (score: 1): Author: "Joe & Lynne Lance" <jolylance@earthlink.net>; Date: Tue, 9 Mar 2004 16:18:10 -0500; But the dyno test results would apply only to the specific engines tested, each with their own valve timing, lift, duration, etc., the port sizes and shapes and the exhaust gas temperature, pressure; /html/land-speed/2004-03/msg00104.html (9,839 bytes)

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