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      12-26-2011, 02:15 AM   #1
M3ryder55
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FS: OEM S65 Headers like new condition

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Selling for my brother

Headers have around 7,000 miles on them

Shoot me offers if interested






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      12-26-2011, 02:28 AM   #2
schnell325
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Do tell! What replaced them?
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      12-26-2011, 04:58 AM   #3
M3ryder55
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he lives out in arizona and has one of his friends who owns a muffler shop designed one for him. says it sounds good but loud and hasn't dynoed but car doesnt feel faster/slower according to him. he doesnt mind it though so he has no use for his stock headers and wanted to see if i could sell em
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      12-26-2011, 05:09 AM   #4
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pretty hard to better the stock headers
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      12-28-2011, 10:58 PM   #5
M3ryder55
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i figured perhaps a vendor or somebody would want to do some R&D, study the function of these and try to improve overall performance. It looks like it can, i dont see the point in why the tubing curves and isn't straight
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      12-31-2011, 12:28 PM   #6
piloto
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Quote:
Originally Posted by M3ryder55 View Post
i figured perhaps a vendor or somebody would want to do some R&D, study the function of these and try to improve overall performance. It looks like it can, i dont see the point in why the tubing curves and isn't straight
They are curved because they are attempting to have equal length for all of the cylinders. Look it up for more details, but what equal length headers do is allow for cylinders that are 180 deg out of synch w/ respect to firing order from benefiting from the pulse wave created by a closing valve to help scavenge ("pull") the exhaust out of the corresponding cylinder that is just opening its exhaust valve. There's negative pressure behind the pulse wave, which allows the positive pressured exhaust that's existing from the corresponding cylinder to move with more intesity and higher speed (tube diameter held constant) towards the negative pressure.
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