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Old 03-02-2010, 05:00 AM   #1
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Default Header wrap?

Is it worth it?
Not trying to achieve higher exhaust temps, just have a roll lying around, and, it would be nice to get rid of the silly exhaust manifold cover.

Thanks!
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Old 03-02-2010, 05:43 AM   #2
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It sure makes the engine bay cooler. I haven't messed with it on my miata, but on my rx7 with its sky-high EGT's it's a must, along with a turbo blanket. It pretty much ignited EVERYTHING within 6-10 inches of the turbo. After wrap, I can touch it, bare-handed.

Use hi-temp silicone spray-on sealant, helps keep water out of Yo Wrapz
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Old 03-02-2010, 06:02 AM   #3
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One thing I learned is the metal tubing gets so hot, that it shortens the life of exhaust components. I thought it worked very well however.
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Old 03-02-2010, 08:32 AM   #4
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I've had it on my DP for over a year with no ploblems and I haven't melted a heater core hose since.
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Old 03-04-2010, 12:40 AM   #5
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It lowers underhood temps, do it.
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Old 03-04-2010, 12:49 AM   #6
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Do it. I got mines.
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Old 03-04-2010, 12:02 PM   #7
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I put it on a friends BEGI divorced gas downpipe. It's been over a year with much lower temps in the engine bay.
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Old 03-04-2010, 02:16 PM   #8
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They're all lying. Don't do it send it to me for disposal
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Old 03-04-2010, 02:50 PM   #9
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Make sure you soak it in water before you wrap it, and get some nice metal straps to hold it in place.
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Old 03-04-2010, 03:18 PM   #10
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Do it, but don't go too far down on the dp if it is a dd because it will hold moisture and could eventually cause flaking...and it is a waste of wrap out of the engine bay. Soaking is a must before wrapping along with metal straps (or could use hose clamps). I got the black stuff and it has lost all color from changes in temp.
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Old 03-04-2010, 03:21 PM   #11
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you guys wrapping stainless downpipes too?
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Old 03-04-2010, 07:05 PM   #12
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^? why?
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Old 03-04-2010, 07:13 PM   #13
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Supposedly wrapping stainless pipes is a big no-no if you want them to last for very long.
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Old 03-04-2010, 07:48 PM   #14
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Correct, I'm still on the fence whether or not to wrap my stainless header. I've got about a 50 ft. roll of good header wrap that I'd like to use, but I'm not sure it's a great idea.
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Old 03-04-2010, 07:53 PM   #15
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I vaguely remember in some previous thread that Corky or someone with similar experience had seen this happen first-hand with SS and header wrap.
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Old 03-04-2010, 08:55 PM   #16
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I think it does not matter what metal it is. Wrap holds so much heat, that components do not last as long compared to unwraped. I had cracks in my header that I had to have fixed because of the long term use of wrap. I have heard others with mild steal exhaust components complain about this problem as well

I still think the benefits of wrap are worthwile however.
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Old 03-05-2010, 01:09 PM   #17
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might aswell go for it then. If it lasts me 10k miles, that's 2 years of driving for me and stainless headers can be had for less than $150.
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Old 03-08-2010, 11:37 PM   #18
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Thanks, guys.
I'll blanket that sucker.
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Old 03-08-2010, 11:42 PM   #19
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ok this is maybe a little off topic, but what about ceramic coating it compared to the fiberglass wrap? i was thinking of jet hot once i heat cycle my manifold a litte. any thoughts? i would think there would be as much concern with cracking and it wont keep in moisture being its powder coated on
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Old 03-09-2010, 11:40 AM   #20
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I did ceramic coating, then header wrap, then silicone sealant spray. This is supposed to protect the stainless from corrosion and fatigue. It also does a really great job keeping the heat inside the pipe and out of the bay. I am quite happy with the results so far. I had a mild steel set of headers on my Camaro that were done the same and lasted better than 10 years. They saw tremendous heat from lots of bigblock on the bottle.
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