summit headers
Legend
Joined: Jul 2007
Posts: 7,843
Likes: 13
From: DFW, Texas
Header wrap will trap moisture and cause rusting and pitting. You can't avoid that, unless you live somewhere it never rains, and it's never humid. High humidity will condense on the headers as it does in the exhaust pipes.
Moisture condensation in the exhaust is the primary reason O2 sensors are not installed under the 3 or 9 o'clock positions. It also condenses on the outside as well, but normally evaporates as it is exposed to the air. The wrap traps that moisture and holds it against the pipes longer.
No header company I know of recommends wrap, nor will they honor their warranty if wrap is used. It's also interesting to note that header manufacturers do not manufacture or sell header wrap. Seems to me that if it was a good compliment, they'd make it and sell it.
Moisture condensation in the exhaust is the primary reason O2 sensors are not installed under the 3 or 9 o'clock positions. It also condenses on the outside as well, but normally evaporates as it is exposed to the air. The wrap traps that moisture and holds it against the pipes longer.
No header company I know of recommends wrap, nor will they honor their warranty if wrap is used. It's also interesting to note that header manufacturers do not manufacture or sell header wrap. Seems to me that if it was a good compliment, they'd make it and sell it.
Veteran
Joined: Jul 2009
Posts: 271
Likes: 0
From: Capac
Header wrap will trap moisture and cause rusting and pitting. You can't avoid that, unless you live somewhere it never rains, and it's never humid. High humidity will condense on the headers as it does in the exhaust pipes.
Moisture condensation in the exhaust is the primary reason O2 sensors are not installed under the 3 or 9 o'clock positions. It also condenses on the outside as well, but normally evaporates as it is exposed to the air. The wrap traps that moisture and holds it against the pipes longer.
No header company I know of recommends wrap, nor will they honor their warranty if wrap is used. It's also interesting to note that header manufacturers do not manufacture or sell header wrap. Seems to me that if it was a good compliment, they'd make it and sell it.
Moisture condensation in the exhaust is the primary reason O2 sensors are not installed under the 3 or 9 o'clock positions. It also condenses on the outside as well, but normally evaporates as it is exposed to the air. The wrap traps that moisture and holds it against the pipes longer.
No header company I know of recommends wrap, nor will they honor their warranty if wrap is used. It's also interesting to note that header manufacturers do not manufacture or sell header wrap. Seems to me that if it was a good compliment, they'd make it and sell it.
I would think for any garage kept vehicle (something high performance or classic) thats not driven every day would benefit from this wrap as they are not exposed to the elements.
Champion
Joined: May 2008
Posts: 4,839
Likes: 5
From: Apex, NC
Lol, I was wondering if anyone would spot that! Like Hahns5.2 said, I got rid of the EGR. I'm running a modded '98 360 intake manifold w/o EGR.
I don't doubt that, but at $150, I'd rather buy a second set of headers in 4 or 5 years (they certainly wouldn't rust through in any less time around here... high humidity summers but very little snow in winters... not much salt) than have to replace hundereds of dollars worth of electronics cause they overheated... which happened to my neighbors Dakota on a 100+ deg F summer day.
Header wrap will trap moisture and cause rusting and pitting. You can't avoid that, unless you live somewhere it never rains, and it's never humid. High humidity will condense on the headers as it does in the exhaust pipes.
Moisture condensation in the exhaust is the primary reason O2 sensors are not installed under the 3 or 9 o'clock positions. It also condenses on the outside as well, but normally evaporates as it is exposed to the air. The wrap traps that moisture and holds it against the pipes longer.
No header company I know of recommends wrap, nor will they honor their warranty if wrap is used. It's also interesting to note that header manufacturers do not manufacture or sell header wrap. Seems to me that if it was a good compliment, they'd make it and sell it.
Moisture condensation in the exhaust is the primary reason O2 sensors are not installed under the 3 or 9 o'clock positions. It also condenses on the outside as well, but normally evaporates as it is exposed to the air. The wrap traps that moisture and holds it against the pipes longer.
No header company I know of recommends wrap, nor will they honor their warranty if wrap is used. It's also interesting to note that header manufacturers do not manufacture or sell header wrap. Seems to me that if it was a good compliment, they'd make it and sell it.
Last edited by 95_318SLT; Oct 11, 2009 at 02:44 AM.
All Star
Joined: Mar 2008
Posts: 880
Likes: 0
Like Hahns5.2 said, I got rid of the EGR. I'm running a modded '98 360 intake with no EGR.
I don't doubt that, but at $150, I'd rather buy a second set of headers in 4 or 5 years (they certainly wouldn't rust through in any less time around here... high humidity summers but very little snow in winters... not much salt) than have to replace hundereds of dollars worth of electronics cause they overheated... which happened to my neighbors Dakota on a 100+ deg F summer day.
I don't doubt that, but at $150, I'd rather buy a second set of headers in 4 or 5 years (they certainly wouldn't rust through in any less time around here... high humidity summers but very little snow in winters... not much salt) than have to replace hundereds of dollars worth of electronics cause they overheated... which happened to my neighbors Dakota on a 100+ deg F summer day.
I live in Oregon...where it RAINS all the time so for me the wrap just is not worth it...but for you...maybe so that is where we are. Just some thoughts...
I do have on stupid question to ask...what is EGR and how I know if I have it?