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5/31/16 7:50pm - Original Message: 'Header wrap / tape'
apesa63
Former Member
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Hillsboro, OR - USA

Vette(s):
1975 L48 4sp. Coupe... Rebuilt Motor

Joined: 7/20/2015
Posts: 44
I am trying to reduce the amount of heat under the hood and was considering header wrap. All I have read is that it works well. I was hoping to find someone here who has used it and what they thought.

Thanks,
Pat


____________________________________
Daytona Yellow '75 350 Muncie 4 spd
'73 454 on the engine stand.


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5/31/16 9:30pm - Reply: 'Re: Header wrap / tape'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
Header wrap will keep some of the heat down, but at a cost. It also keeps the heat in the headers. Some header manufacturers will not warranty them if they have been wrapped...it can cause the welds to fail, and pipes to crack prematurely. Wrapping the headers also create a condensation issue that can rust them out quickly, especially if the wrap gets wet.
While header wrap has been around for many years, and many folks have used it, myself included, modern day coatings(Jet Hot, etc.) can keep the heat down without creating any adverse effects....other than the corresponding lightening of the wallet.

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Joel Adams
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6/1/16 10:40am - Reply: 'Re: Header wrap / tape'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2376
Good header wrap is a little pricey. I'm finishing up wrapping a set of American Racing stainless long tube headers for the wife's '87 Olds 442. I use DEI products. http://www.designengineering.com/products.asp
Harbor Freight carries those stainless zip ties cheap btw. 

The trick is soaking the material in water and wrapping it tight and evenly (overlapping) as possible. Secure the ends of your wrap with the stainless ties. 

I did the downpipes from the headers to the mufflers on my corvette side pipes a couple years ago with the DEI Titanium w/LR (Lava Rock) Technology and it's holding up well. 


____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
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'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
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6/1/16 10:49am - Reply: 'Re: Header wrap / tape'
cingraham
Former Member
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Brookline, NH - USA

Vette(s):
1976 corvette L82 red interior with white seats and door panels with ceramic headers and flow master exhaust and a Crane Cam

Joined: 5/2/2014
Posts: 46

Ceramic Coated Exhaust Parts

This is a spray-on finish that’s infused with heat-insulating ceramics. It is not a DIY solution, these exhaust parts are coated at the factory, or sent to a facility with the proper equipment. 

Exhaust Wrap

This is a fiberglass or composite fabric that wraps around, and insulates, exhaust system components. It is a DIY solution that can be added to nearly any exhaust part, stock or aftermarket.



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6/2/16 6:32pm - Reply: 'Re: Header wrap / tape'
CCasey
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New Albany, OH - USA

Vette(s):
1980 Coupe / Snowcrest White / L48, 350 / Comp Cam / Edelbrock Heads / Cyclone Intake / Holley Carb / Holley Fuel Pump / Patriot Headers / Dual Exhaust / Magnaflow Mufflers / 1964 Coupe / Riverside Red / L76, 327, 365hp

Joined: 8/17/2010
Posts: 173
I have ceramic coated Patriot Tight-tuck headers which are not wrapped. 
However, I also have 2 1/2-inch aluminum dual exhaust (Corvette Central) that I do have wrapped.  I'm pretty sure they help keep down the heat and the wrap manufacturers claim that they help increase horsepower.
 
I am not worried about any rusting because aluminum corrodes but it does not rust. Rust refers only to iron and steel corrosion. Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion.


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Chuck

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