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Old 01-03-2011, 06:58 PM   #21
94Cobra
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Originally Posted by PiSTOLpete717 View Post
Does this dramatically lower under-hood temperatures on the SVT?
While wrapping your headers is an excellent way to lower under hood temps, the primary reason for wrapping them is to specifically keep the heat inside the tubes. The longer the heat stays in the exhaust piping the better the scavanging action of the exhaust. In other words, trapping the heat in the header makes the exhaust leave the cylinder faster, therefore increasing engine efficiency. As we all know, more efficiency = more power.

Lowering under hood temps in just a positive side effect...
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Old 01-03-2011, 07:41 PM   #22
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Cool

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Originally Posted by 94Cobra View Post
While wrapping your headers is an excellent way to lower under hood temps, the primary reason for wrapping them is to specifically keep the heat inside the tubes. The longer the heat stays in the exhaust piping the better the scavanging action of the exhaust. In other words, trapping the heat in the header makes the exhaust leave the cylinder faster, therefore increasing engine efficiency. As we all know, more efficiency = more power.

Lowering under hood temps in just a positive side effect...
cool man thanks alot i appreciate it
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Old 01-03-2011, 07:42 PM   #23
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Not really...the stock heat shield is VERY effective. I left the heat shield off once and made a quick run to the store. Popped the hood and almost burnt my eyebrows off (not really). Even if heat wrap is more effective than the stock shield, which I'm reluctant to say, it wouldn't be a huge difference.
yea thats what i was thinking, most of the stock components on the SVT are already pretty much as good as it gets...
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Old 01-04-2011, 01:55 PM   #24
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Originally Posted by VenomRogue View Post
there are 2 dynos floating around.

one showing +4 whp, the other showing +6

i cant find them, but I saw them when i had my regular zetec focus, and looking for a header at that time (2+ years ago).

i still wouldnt get the JBA as it dents way to easily from how low it sits.
+1 on this! if ANYONE can get their hands on a 4-1 JBA Long tube race header, USE it! also get the 2.5" flex pipe too.

The FocusSport one, only had a 2.25" collect, the JBA had a 2.5" collector

Here's the link for comparison, but it's busted....

http://www.focusfest.com/forum/showthread.php?t=71439

and where's it's for sale..

http://www.rpmoutlet.com/focusjba.htm

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Originally Posted by DanUSVT View Post
I have 0 experience with JBAs for the focus, but I had a set on another car and they SUCKED. Weld broke at the EGR bung after less than a year. I would stay clear of JBA products personally. YMMV

you sure it was a JBA header, not an Ebay knock off? They look almost the same, minus the JBA stamp and different size primaries/collector.
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