I got OBXv2 headers on my car and I hear zzzzzzz noise from flex section every time I rev my car. I know my flex is good but I don't like the noise. Would it be good idea to wrap that part of the headers so it would be like stock no noise?

 

There's nothing wrong with wrapping the flex. Just make sure you prep it properly first so that it doesn't rust out.

 

Wow..talk rapid response.

I must've just so happened to stumble upon your thread on the main page right after you posted it.

 

How to prepare it? I have never used the header wrap. Any instruction possible so I can do it by myself.

 

Advance or AutoZone will have everything you need...

Header wrap, metal ties and silicone spray. But be prepared to pay a pretty penny if you buy it there.

If you're patient, you can order header wrap off of eBay for dirt cheap...

Anyway:

1) Scuff the area to be prepped lightly with high-grit sandpaper or a Scotch Brite pad.

2) Spray a few layers of the silicone spray over the bare metal. Basically until there's no more exposed metal.

3) Start the header wrap at one end and use a ziptie to secure it (temporarily, of course...). Wrap as far as you want, and then secure the other end with a ziptie and cut the wrap.

4) If you're sure it's wrapped how you want it, take the metal ties and secure them next to the zipties. Cut the zipties off.

5) Spray the wrap down with another layer of silicone spray. Three or four times.

That's pretty much it. Oh. Wear heavy gloves and a face mask. Fiberglass is gonna go everywhere when you do this, and I don't think you wanna inhale it or get it all over your hands.

 

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SLCPunk267

Holy hell. Apparently a lot of lurkers wanna know how to wrap their headers..

 

This is helpful for me too thanks brett

 

took two packs of that crap to do these. I would definitely have to say order it online.

 

did those as they were the immediate area where i figured heat radiated from. have yet to do the rest.

 

I never wrapped my headers when I initially installed them. But I will be when I pull them off to weld on the bung for my wideband here in a few weeks.

They're fine in the winter time when there's cold air to wash over the engine, but in the Nashville summers, they turn my engine into an oven. Excessive heatsoak ftl.

 

yeah. i figured i could do the lower piping at any time. it isnt so bad here in seattle area. but i figured those would cause a huge spike in underhood temp. may do it one day when im bored.

 

I would be careful with those wrap....It can hold moisture....but the OBX is T304 stainless steel or is it chrome plated mild steel? I chose to ceramic coat my Cattman headers just to reduce the underhood temp and to prevent heat warpage of my plastic components like the cooling fan shroud....

 

Spray 'LUBE' silicone spray on it?

 

That's why you pre-treat the piping with the silicone spray before and treat the wrap with after wrapping it. I'm pretty sure the OBX are stainless, though.

Sorry. Vague statement. Several companies (DEI and VHT being the main two) make high-temp silicone sealant for treating header wrap.

 

DEI works the best IMO and its not too expensive but +1 for buying the wrap from ebay.

 

Yeah, I used it on my Injen Intake plus a heatshield to reduce heat soak from those radiator fans....

 

i heard that wrapping the headers can crack them after a while......

 

On mild steel headers it will/could result in corrosion sooner than nonwrapped mild steel headers.....

 

Noob question.

Is there much or any difference in real world applications between the regular temp and high temp wrap (aside from using it in a full blown race car)?

 

Not really a noob question since I don't think anyone in the 5th gen forum has a full-blown racecar with header wrap.

To be honest, I don't see what could be different. Maybe one is heavier so it holds heat better, or has a tighter knit?

That's the only thing I can really come up with...fiberglass fabric is fiberglass fabric. Do you have a page that shows the two?

 

No, I just saw it on ebay (no details or pics really). They claim different temp ratings, 1500 vs 1000

Maybe the high temp is treated with something? Or maybe there's no difference at all haha

 

Having raced many years ago...... THE best way to wrap headers is this, simple and straight foward. Let the wrap soak in water overnight. Pull it as tight as you can around the header pipe. the only place you need to put the clamps on is where you finish up. The heat from the pipes will shrink the wrap around tight enough. Looks alot neater with clamps not visible efrom the top.... My 2 cents, try it

 

I've heard of doing it this way before. The only thing that worries me is the moisture being held against the headers before you actually get them mounted and hot.

But then again, I suppose if you pre-treat the piping with silicone, like I said.

Having the wrap soak would cut down on airborne fiberglass particles immensely, too.

 

Yes the stuff I used was very dense from Cool It, the wrap weave is thicker therefore providing more insulation....

 

I ordered some "high temp" off ebay. I'll post my impressions (even though I have nothing to compare it too ).

Hmmm, arms are full of fiber glass, yay! Pretty thick, but not really tightly woven (unwinds easily by pulling the thread). I wrapped the flex section up (starting failing some more, rusting out and separating). It had a lot of blackness to it. My fingernails still have some black in them. No noise coming through so it did the job.