Exhaust wrap on headers - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #26  
Old 01-26-2005
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Quote:
Originally Posted by Mnemonic
Those worried about underhood air temps are just not moving fast enough. I'd think that if you removed all the engine bay splash guards, you'd lower the temperature more than header wraps could. Let the heat bleed off into an ample air supply instead of insulate it into the exhaust.
We aren't moving fast at all...We are crawling through the woods. Also, the splash guards help keep dirt, mud, etc from getting into the engine bay. A dirty engine is an unhappy engine...is a hotter engine!
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  #27  
Old 01-26-2005
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How about port holes like a Buick?
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  #28  
Old 01-26-2005
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Chico ***** were hilarious... :rofl:

Header wrap also causes the metal on the headers to become brittle, as well. I've seen some people take the wrap off (after many many races) and pieces of metal actually fall off. Creepy.
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  #29  
Old 01-26-2005
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Quote:
Originally Posted by Mnemonic
Those worried about underhood air temps are just not moving fast enough.
lol! Spoken like a true street truck driver, or west coast pre-runner guy. In the woods, trails, rocks and swamps you don't have the option to move quickly, as Mike mentioned.
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  #30  
Old 01-26-2005
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Quote:
Originally Posted by John Moorehead
Header wrap also causes the metal on the headers to become brittle, as well. I've seen some people take the wrap off (after many many races) and pieces of metal actually fall off. Creepy.
That's from the excessive heat cycles. The metal keeps getting retempered when it's exposed to the high heat.
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  #31  
Old 10-24-2008
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anyone else with experience with header wrap on a ranger or other? noticeable improvement? better to use or stinless or coated instead of plain steel? makes more sense to me to bump old thread then to start a new one
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  #32  
Old 10-24-2008
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Header wrap traps moisture alot of times and it will rust the crap out of your headers. Your better off getting an aftermarket set and having them coated.
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  #33  
Old 10-29-2008
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I also have been thinking about header wraps. I don't want to do it first of all since there's not much room under the hood to wrap them, without taking them completely off...not worth it. Also the wrap will get filthy and will need cleaned/replaced constantly. I did hear or see that there's some silicone spray coating you can spray over the wrap to make it more durable.
The idea of spraying some coating like ceramic or something would be another idea, but I don't think it would help much. It would just get hot also after a few minutes and you'd be left with the same problem you started with.
I do have a prerunner bumper on with no mud/splash guards...one of them got ripped off and i never replaced it, so I just took the other one off. Since I have the prerunner bumper off, the stock bumper and valence is gone, so it's pretty much like running around with your pants off when speaking about keeping the engine bay cool.
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  #34  
Old 07-22-2009
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interesting cons about heat wrap. i just picked up a $50 roll at autozone (2"x50'. WAY more than i need for my 18" exhaust manifolds for the 3.0L. i'll share with my peeps). kind of disappointing to hear all of this after buying a roll. i don't do any off roading so maybe the maintenance of the wraps wont be an issue. however the endurance of those cast iron exhaust manifolds does pose some concerns for me. how much heat can they actually take?
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