Author Topic: Header wrap - yes or no?  (Read 8159 times)

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Offline DeepBusch69

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Header wrap - yes or no?
« on: October 30, 2019, 01:09:20 PM »
I have heard that a header wrap can cause your header to crack over time, too hot I guess.  Mine shouldn't see any moisture so corrosion shouldn't be an issue.  Does anyone wrap their headers, and if so, what has been your experience?  My headers have already cracked 3 times so I'm probably due for a new set anyways. 

Offline dsrace

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Re: Header wrap - yes or no?
« Reply #1 on: October 30, 2019, 02:40:32 PM »
i wrap all of my headers and down pipes to retain the heat so they cool slower to keep them from cracking. also to keep the keat off of other things. if yours has cracked 3 times then it's too thin, getting to hot for the wall thickness or if it's cracking on the welds then it wasn't welded correctly. enemy knows what that looks like all to well  ;D
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Offline Enemy

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Re: Header wrap - yes or no?
« Reply #2 on: October 30, 2019, 07:13:39 PM »
Now don't be going and gettin me all wound up about my cyborg headers dammit!!

And header wrap is awesome for locating those cracks as well.
Soooo, sturdy well built header? In my best Elmer Fudd voice.." "Wap that widdle wascal!"
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Offline fabr

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Re: Header wrap - yes or no?
« Reply #3 on: October 30, 2019, 07:21:17 PM »
Only downside I know of is corrosion with mild steel headers not ceramic coated.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline dsrace

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Re: Header wrap - yes or no?
« Reply #4 on: October 30, 2019, 10:10:00 PM »
 
Now don't be going and gettin me all wound up about my cyborg headers dammit!!

And header wrap is awesome for locating those cracks as well.
Soooo, sturdy well built header? In my best Elmer Fudd voice.." "Wap that widdle wascal!"

 :m
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Because he will drag you down to his level and beat you with experience

Offline dsrace

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Re: Header wrap - yes or no?
« Reply #5 on: October 31, 2019, 08:56:12 AM »
got a pic of the crack in the manifold?
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Offline DeepBusch69

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Re: Header wrap - yes or no?
« Reply #6 on: October 31, 2019, 12:31:42 PM »
The crack is where the tape is, both sides.  I have it all bugger welded up now and added the gusset underneath.  Seems like a common subi issue, I think fast almost lost his whole turbo one day from the header cracking.  I want the heat wrap as I keep melting the timing cover, letting in sand and ruining the belt and pulleys.   That costs a lot more than a header does.  Now after welding the header and adding the gusset, of course it shrank and is a PITA to install now, need a damn crowbar. 

Offline dsrace

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Re: Header wrap - yes or no?
« Reply #7 on: October 31, 2019, 12:34:13 PM »
mild steel manifold?
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Offline DeepBusch69

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Re: Header wrap - yes or no?
« Reply #8 on: October 31, 2019, 12:44:46 PM »
Yes, I think so.  Came from outback, ceramic coated

Offline Enemy

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Re: Header wrap - yes or no?
« Reply #9 on: October 31, 2019, 01:07:46 PM »
If you do end up with a new header, or making this one all cyborg like mine, something to consider.. Not saying that yours isn't doing the job!

"If the hate of men could be turned into electricity, it would light up the whole world."   ~Nikola Tesla

Offline DeepBusch69

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Re: Header wrap - yes or no?
« Reply #10 on: October 31, 2019, 01:23:13 PM »
If you do end up with a new header, or making this one all cyborg like mine, something to consider.. Not saying that yours isn't doing the job!

Good info, thanks.  I'll add the wrap and a turbo blanket for now.  If the header takes a dump, then a new one and maybe a mechanical heat shield. 

Offline dsrace

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Re: Header wrap - yes or no?
« Reply #11 on: October 31, 2019, 03:00:46 PM »
Yes, I think so.  Came from outback, ceramic coated


put a magnet on it  ;) 304 ss has a tiny bit of carbon so it will have a tiny magnetic pull. good ss will not at all but nothing wrong with 304!
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Offline dsrace

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Re: Header wrap - yes or no?
« Reply #12 on: October 31, 2019, 03:09:28 PM »
If you do end up with a new header, or making this one all cyborg like mine, something to consider.. Not saying that yours isn't doing the job!

solid info for sure. you forgot the best way to properly route the wg......Borg Warner 6758 efr.  :D  :D
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Offline fabr

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Re: Header wrap - yes or no?
« Reply #13 on: October 31, 2019, 05:32:50 PM »
WHen you get the header on the engine,take a torch and heat each side for 2-3 inches and around the gusset red hot to relax the stress in the tube or it will just crack again for sure.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Offline big dave

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Re: Header wrap - yes or no?
« Reply #14 on: November 01, 2019, 07:58:38 AM »
looks like John made A change to his header in that area budlight. See the added gusset installed below the wie. By the way Budlight this Header is for sale. I ran it for one summer on my old 2.0 subie Motor Befor going to the 2.5.
« Last Edit: November 01, 2019, 08:04:19 AM by big dave »

 

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