 General question about Header/HE design, Why all the curves? |
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| Rav914 |
 Aug 23 2007, 08:29 PM
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All-weather fan  Group: Members Posts: 740 Joined: 15-April 07 From: WA Member No.: 7,669 Region Association: None  |
I have a fairly decent drive home and it always gets me pondering engine and car improvements. I'm convinced my old rusty exhaust system is choking the life out of my 914. Having put SSI HE's and an M&K muffler on my 911, I noticed what an improvement to performance changing one's exhaust can make.
I've looked at all sorts of options for my teener ('74 1.8) and that got me thinking. Why do headers have so many curves and HE's have more subtle bends to them? Couldn't headers just go straight back to the muffler? For a two in and one out muffler. I know there's a reason. And I'm sure it's performanced based. I'd sure like to know. Thanks. |
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| JohnM |
Aug 23 2007, 10:50 PM
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#2
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914 enduro driver Group: Members Posts: 179 Joined: 23-July 04 From: San Diego Member No.: 2,387 |
QUOTE(Rav914 @ Aug 23 2007, 07:29 PM)  I have a fairly decent drive home and it always gets me pondering engine and car improvements. I'm convinced my old rusty exhaust system is choking the life out of my 914. Having put SSI HE's and an M&K muffler on my 911, I noticed what an improvement to performance changing one's exhaust can make. I've looked at all sorts of options for my teener ('74 1.8) and that got me thinking. Why do headers have so many curves and HE's have more subtle bends to them? Couldn't headers just go straight back to the muffler? For a two in and one out muffler. I know there's a reason. And I'm sure it's performanced based. I'd sure like to know. Thanks. Stock and SSI HE's are curved for axle vertical range of motion clearance. |
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Posts in this topic
Rav914 General question about Header/HE design Aug 23 2007, 08:29 PM
Dan (Almaden Valley) first of all you want all the tubes to be of equal... Aug 23 2007, 08:34 PM
SirAndy
but thems the basics :D
:agree:
the exhaust g... Aug 24 2007, 02:21 PM Rav914 I see...far more complicated than I thought. Than... Aug 23 2007, 08:42 PM |
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