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Question about header wrap.

 
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Old 04-09-2011, 11:49 PM
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Question about header wrap.

Does anyone ever try the header wrap?
There is a lot of them on ebay, i dont know why brand is good.
can somebody tell me from the exprience.
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Old 04-10-2011, 10:19 PM
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Re: Question about header wrap.

i have header wrap on my stock header right now. got it at pepboys. i did see a dramatic decrease in underhood temps. dunno if it adds much performance
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Old 04-10-2011, 10:24 PM
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Re: Question about header wrap.

dei is the best header wrap ive seen . the only one that dosnt start to fall apart after a while . also you can get it in black . as stated it dose decrease under hood temps .. there are theories on how it increases performance by lower intake temps and an increase in the scavenging effect by holding the heat inside exhaust piping ..

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Old 04-10-2011, 10:40 PM
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Re: Question about header wrap.

im in the same boat now. just got a hytech replica header and cant decide whether to wrap it or not haha.
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Old 04-10-2011, 10:44 PM
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Re: Question about header wrap.

I've researched quite a bit about header wrap, since I'll be using it when I install my new header. DEI seems to pop up a lot, being recommended by LOTS of people. That's probably what I'll be going with.
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Old 04-10-2011, 10:45 PM
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Re: Question about header wrap.

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Originally Posted by dbd6604 View Post
I've researched quite a bit about header wrap, since I'll be using it when I install my new header. DEI seems to pop up a lot, being recommended by LOTS of people. That's probably what I'll be going with.
hm... i gotta look into that as well. what header did you go with?
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Old 04-10-2011, 10:51 PM
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Re: Question about header wrap.

Wrapping headers keeps the exhaust velocity higher by keeping the exhaust gases hotter. Hotter gases flow easier (obviously).

I don't wrap my headers. Why?

You have two basic categories of headers: Stainless, and Ceramic coated mild steel.

Stainless
-conducts more heat
-isn't as prone to corrosion
-looks good when it's polished
-looks like sh!t once it has been through a few heat cycles
-harder to get repaired in an emergency, unless you know a lot of people who weld stainless

Wrapping these can cause premature failure of welds, due to keeping the heat in the header for longer periods of time. However, it does dramatically decrease temps under the hood. My hood steams while I'm at a stop light in the rain, and mine isn't wrapped.

Ceramic coated mild steel
-holds heat in better due to the ceramic coating
-looks good as long as they aren't rusted
-are typically cheaper
-are easily repaired due to being a mild steel construction

Wrapping these is fairly redundant; while it does help keep temps lower, the reduction isn't as noticeable. The extra insulation doesn't have any adverse side effects on the welds (to the best of my knowledge). However, I wouldn't wrap ANY mild steel header due to the fact that any time the wrap gets wet, it keeps the header wet, and thus increases rust. My last H22 powered car had a ceramic coated DC header, and within about 15 minutes, you could work in the engine bay with no worries of burning your hands on the header. With my Hytech replica, I have to wait almost an hour lol.


As for wrapping a hytech replica, f*ck all that. It's too much of a pain in the ass to get between the secondaries, and it turns into a big f*ckfest. As a matter of fact, I hate the sh!t out of my hytech replica LOL.
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Last edited by Phantom240; 04-10-2011 at 10:54 PM.
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Old 04-10-2011, 10:52 PM
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Re: Question about header wrap.

I just got a a DC SS header for my H23. Not expecting any gains out of it really, but it looks better than the OE setup and I needed a new flex pipe anyway haha.
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Old 04-10-2011, 10:55 PM
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Re: Question about header wrap.

phantom240. i agree with almost all of that except the wet part. theres no way that a 1000+ degree header wont burn off any moisture from the wrap pretty instantly

dbd6604: nice man, that works
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Old 04-10-2011, 10:59 PM
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Re: Question about header wrap.

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phantom240. i agree with almost all of that except the wet part. theres no way that a 1000+ degree header wont burn off any moisture from the wrap pretty instantly

dbd6604: nice man, that works
It isn't a big deal with stainless headers, due to them not holding any heat in on their own, but with ceramic coated, the last couple feet of piping do stay a bit damp if you're driving in the rain. I just wouldn't wrap past the collector, to be honest.

I'd have to wrap a DC header just to cover up the DC badge, lol

I'm gonna be getting rid of my Hytech replica and going with the HHC5029 DC header, which has the 2.5" collector. I hate the f*ck out of this Hytech replica header. lol.
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Old 04-10-2011, 11:03 PM
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Re: Question about header wrap.

ahhh that makes sense. it also occurred to me that once its at operating temp and shuts down it will undoubtedly create some sort of condensation. i would never wrap past the collector anyway. on my stock header i only have the top half wrapped haha
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Old 04-10-2011, 11:06 PM
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Re: Question about header wrap.

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ahhh that makes sense. it also occurred to me that once its at operating temp and shuts down it will undoubtedly create some sort of condensation. i would never wrap past the collector anyway. on my stock header i only have the top half wrapped haha
Right, right. I wouldn't wrap past the crossmember.
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Old 04-11-2011, 09:13 PM
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Re: Question about header wrap.

I heard people say wrap the header would cause the heat stay inside the engine.
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Old 04-11-2011, 09:14 PM
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Re: Question about header wrap.

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Originally Posted by UPSluder View Post
i have header wrap on my stock header right now. got it at pepboys. i did see a dramatic decrease in underhood temps. dunno if it adds much performance
How much did you pay?

by the way, you work for UPS?
I am also a UPSer
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Old 04-11-2011, 11:00 PM
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Re: Question about header wrap.

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How much did you pay?

by the way, you work for UPS?
I am also a UPSer
it was around $50ish if i remember right. and yeah i used to. sh!t was the worst. i was there for 3 years haha. twilight shift, loader/pickoff. pretty much best in the building. what do you do?
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Old 04-11-2011, 11:57 PM
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Re: Question about header wrap.

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I heard people say wrap the header would cause the heat stay inside the engine.
Nah..
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Old 04-12-2011, 05:24 AM
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Re: Question about header wrap.

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it was around $50ish if i remember right. and yeah i used to. sh!t was the worst. i was there for 3 years haha. twilight shift, loader/pickoff. pretty much best in the building. what do you do?
I start from unloader, now I'm a supervisor at small sort. work in the hub.
Night shift, this july will be my fourth year.
everynight is like....Jail
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