Header wrap for exhaust manifolds?

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Header wrap for exhaust manifolds? - 5/4/2008 9:22:11 AM    meltdowndave   Posts: 94 Joined: 4/12/2008 Status: offline Has anyone tried using aftermarket header wrap to insulate the exhaust manifolds and perhaps increase the life of ignition wires? http://www.southernrods.com/categories/miscellaneous/insulating-header-wrap/products/product-827.html Post #: 1

RE: Header wrap for exhaust manifolds? - 5/4/2008 3:21:56 PM    Disco Mike Posts: 9377 Joined: 4/27/2006 Status: offline Just use good wires, Magnecore 8mm, and don't worry about the heat. _____________________________ Mike Retired service manager. Member of the Solihull Society, NCLR club,past member of the SCLR club and Santa Barbara 4 Wheelers. 99 D2, 3" lift, lockers, H.D. axles, 4:11 gears, Custom front and rear bumpers, Warn winch, HID lights and an Engel 45. (in reply to meltdowndave) Post #: 2

RE: Header wrap for exhaust manifolds? - 5/13/2008 8:34:10 AM    unstable   Posts: 166 Joined: 4/20/2008 Status: offline I don't think that header wrap would be as effective on exhaust manifolds as it is on headers.  Headers are generally fabricated out of metal tubing.  In contrast, exhaust manifolds are made from castings.  I think the thicker castings, while constricting exhaust flow to some extent, actually insulate better than the headers by far. I don't think you'd actually hurt anything by wrapping your exhaust manifolds.  It may lower under-hood temperatures a little but I would predict it only having a marginal impact on the engine temperature itself. In the hot-rod sector, I don't see many people using header-wrap.  It has a tendency of trapping water and rotting off of the pipes.  Almost more of a pain in the butt than it is worth. (in reply to Disco Mike) Post #: 3

RE: Header wrap for exhaust manifolds? - 5/14/2008 2:22:47 AM    Bartell   Posts: 64 Joined: 10/27/2007 Status: offline quote: ORIGINAL: Disco Mike Just use good wires, Magnecore 8mm, and don't worry about the heat. Mike's right..though Magnecor 7mm (the black ones) is a good as 8mm for a non racer and easier to install. Exhausting wrapping will simply accelerate exhaust rust. If you want to lower engine bay heat, you could ceramic coat your exhaust manifolds and bay pipes. James (in reply to Disco Mike) Post #: 4

RE: Header wrap for exhaust manifolds? - 5/16/2008 6:13:56 AM    Disco Mike Posts: 9377 Joined: 4/27/2006 Status: offline Gor to the Magnacor site, the 7mm wires are not as good as the 8mm's. _____________________________ Mike Retired service manager. Member of the Solihull Society, NCLR club,past member of the SCLR club and Santa Barbara 4 Wheelers. 99 D2, 3" lift, lockers, H.D. axles, 4:11 gears, Custom front and rear bumpers, Warn winch, HID lights and an Engel 45. (in reply to Bartell) Post #: 5

RE: Header wrap for exhaust manifolds? - 5/23/2008 10:49:13 AM    Darover   Posts: 669 Joined: 2/2/2007 From: Ottawa, Ontario, Canada Status: offline Header wrap apparently helps the engine running cooler _____________________________ Real knowledge comes from experience, not hearsay!!! So no answer is often better than a missleading one. (in reply to Disco Mike) Post #: 6

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