header insulation
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header insulation
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Aug 28 2010, 10:51 AM
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Club Regular Group: Members Posts: 89 Posts Per Day: 0.02 Thanks Received: 1 Trader Stats: 0 (0%) Joined: 29-May 10 From: Moscow, Russia Member No.: 8,619 Mood: Accomplished |
Hello
your opinion about heat insulation on the header: I'm thinking to do the same for my header, but not sure.... -------------------- A proud member of the club.
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Aug 28 2010, 01:33 PM
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Performance/Audio Guru Group: Members Posts: 1,356 Posts Per Day: 0.19 Thanks Received: 2 Trader Stats: 1 (100%) Joined: 27-January 05 From: Orange County, CA Member No.: 60 |
Heat insulation is great except for one part. It keeps underhood temps cooler, helps exhaust gas travel faster and looks cool. Only part that isnt great is it speeds up the wear of the metal of the header. I prefer a ceramic coating applied to the inside and outside of the header. Keeps the heats from absorbing into the metal in the first place, so you get performance results of header wrap with no extra wear, Downfall is its usually more expensive.
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Aug 28 2010, 05:37 PM
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Call Me Aaron Group: Lifetimer Posts: 5,810 Posts Per Day: 0.85 Thanks Received: 35 Trader Stats: 0 (0%) Joined: 27-June 05 From: Warrenton, VA Member No.: 1,056 Mood: Carefree |
and you don't get the pancake smell of the heat wrap as it's "curing" lol
-------------------- "Life without music is a big mistake." - Friedrich Nietzsche QUOTE (rogerdavis87 @ Sep 28 2008, 09:07 PM) [snapback]259849[/snapback] eww i can see your geek |
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Aug 28 2010, 05:48 PM
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F.K.A. fsv87 Group: Members Posts: 1,888 Posts Per Day: 0.32 Thanks Received: 189 Trader Stats: 0 (0%) Joined: 25-November 07 From: Miami, FL Member No.: 5,380 Mood: Obnoxious |
and you don't get the pancake smell of the heat wrap as it's "curing" lol You know, I was thinking about doing a wrap for the manifold I just got. After hearing about this, I'd buy a stock in Ihop or Perkins if I were all of you. The only reason I'm thinking I might not do this is because this engine needs the backpressure or else you're going to power on the low end. When you put on the wrap, it is increasing the velocity of the exhaust gas. I'm so torn. -------------------- |
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Aug 29 2010, 05:29 PM
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Performance/Audio Guru Group: Members Posts: 1,356 Posts Per Day: 0.19 Thanks Received: 2 Trader Stats: 1 (100%) Joined: 27-January 05 From: Orange County, CA Member No.: 60 |
You know, I was thinking about doing a wrap for the manifold I just got. After hearing about this, I'd buy a stock in Ihop or Perkins if I were all of you. The only reason I'm thinking I might not do this is because this engine needs the backpressure or else you're going to power on the low end. When you put on the wrap, it is increasing the velocity of the exhaust gas. I'm so torn. The difference in the backpressure on the low end wont be noticable. It only increases the velocity because it retains the heat, preventing the gasses from slowing down when they cool. Its not the same as increasing the diameter of the pipe, which will effect your bottom end because of loss of backpressure and hurt top end because of cooling exhaust gases(as they expand to the bigger area of the bigger pipe, they cool and slow down). -------------------- |
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Aug 29 2010, 07:30 PM
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Club Regular Group: Members Posts: 140 Posts Per Day: 0.03 Thanks Received: 1 Trader Stats: 0 (0%) Joined: 4-September 09 From: ont, canada Member No.: 7,635 Mood: Accomplished |
you won't notice any power gains. it will reduce the heat underhood and increase the chance of manifold/header cracking.
-------------------- A proud member of the club.
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Aug 30 2010, 03:35 AM
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Club Regular Group: Members Posts: 89 Posts Per Day: 0.02 Thanks Received: 1 Trader Stats: 0 (0%) Joined: 29-May 10 From: Moscow, Russia Member No.: 8,619 Mood: Accomplished |
I plan to install SRI,
and look on heat insulation first of all as ability to decrease temperature under the hood for short intake -------------------- A proud member of the club.
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Aug 30 2010, 09:20 PM
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Insert title here Group: Lifetimer Posts: 1,196 Posts Per Day: 0.23 Thanks Received: 19 Trader Stats: 0 (0%) Joined: 6-December 09 From: Ventura california Member No.: 7,980 Mood: Exhausted |
I am a little confused about people saying that the metal will crack. Header wrapping would retain the heat in the piping which would retain heat in the metal longer then if it was unwrapped. This would allow the metal more time to cool down at a slower rate which would let the metal anneal better then if it was exposed directly to the air causing a more normalizing process and more rapid cooling increasing the chances of cracking.
If someone has a degree in metalurgy please correct me on my assumptions. -------------------- Watch what people are cynical about, and one can often discover what they lack.
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Aug 30 2010, 10:49 PM
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F.K.A. fsv87 Group: Members Posts: 1,888 Posts Per Day: 0.32 Thanks Received: 189 Trader Stats: 0 (0%) Joined: 25-November 07 From: Miami, FL Member No.: 5,380 Mood: Obnoxious |
That seems like a pretty sound theory to me.
Anyone? -------------------- |
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Aug 30 2010, 10:49 PM
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Call Me Aaron Group: Lifetimer Posts: 5,810 Posts Per Day: 0.85 Thanks Received: 35 Trader Stats: 0 (0%) Joined: 27-June 05 From: Warrenton, VA Member No.: 1,056 Mood: Carefree |
no, that pretty much sums it up. same thing with glass (that's how i treat cooling/heating metal) too fast or hot and it will melt/shatter, cool too quickly and it will crack/shatter so i think the wrap would help keep the temps in a manageable range for the piping to cool over time
-------------------- "Life without music is a big mistake." - Friedrich Nietzsche QUOTE (rogerdavis87 @ Sep 28 2008, 09:07 PM) [snapback]259849[/snapback] eww i can see your geek |
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Guest_XG0DZX_* |
Aug 31 2010, 04:50 AM
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Guests Thanks Received: Trader Stats: 0 (0%) |
The other option is a heat shield, either get one fabricated or DIY like mine ? http://www.hyperaustralia.com/forums/viewt...f=11&t=5903
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Aug 31 2010, 10:30 AM
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Trek Rider Group: Lifetimer Posts: 1,232 Posts Per Day: 0.18 Thanks Received: 4 Trader Stats: 1 (100%) Joined: 27-February 05 From: Waukesha, WI Member No.: 444 Mood: Thankful |
-------------------- http://www.bikedad.com | BIBLE: Basic Instruction Before Leaving Earth "God does not exist" -- Karl Marx | "Karl Marx does not exist" -- God |
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