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Exhaust temp

Old 02-10-2010, 11:57 AM
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Default Exhaust temp

Hey, I was just wondering how hot does the average temerature get in a manifold on a 4cyl, I am atempting to make a turbo Mani out of carbon fiber but the resin that I have avalible to me is only rated for 800 degrees Celsius. ( like 1400 degrees F) I searched And found that it can get up to about 300 C. But I would like some other opinions
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Old 02-10-2010, 12:41 PM
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....I'm guessing it would melt into a nice blop of carbon fiber.
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Old 02-10-2010, 12:47 PM
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The carbon fiber itself wouldn't melt, it would just Frey apart. the resin is the issue here
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Old 02-10-2010, 12:54 PM
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Yeah, finding a resin that will handle those kinds of temps would be difficult. Never heard of a carbon fiber exhaust manifold before.

If it's a turbo manifold, you're going to run into higher exhaust temps and pressures as well...

Good luck with it. If you do figure it out, post it up!
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Old 02-11-2010, 06:46 PM
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Yea, im trying to make a turbo manifold, (log style) and I am going to pressure test it on Monday to c if it has any chance of holding. I'll post up the results when I'm done on Monday
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Old 02-12-2010, 05:41 PM
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F1 cars still use metal exhaust manifolds... they are the kings of weight reduction, so, Im sure if it was possible, they would be doing it.
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Old 02-12-2010, 05:56 PM
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Originally Posted by Webbgh0st View Post
Hey, I was just wondering how hot does the average temerature get in a manifold on a 4cyl, I am atempting to make a turbo Mani out of carbon fiber but the resin that I have avalible to me is only rated for 800 degrees Celsius. ( like 1400 degrees F) I searched And found that it can get up to about 300 C. But I would like some other opinions
At wide open throttle most of my turbo cars hang out around 900* C and those are mostly pump gas tunes, so with better fuel I will push it higher. On smaller turbo's and a cast iron exhaust manifold one my older eclipses would hit almost 1100* C during a fifth gear pull.

Someone below mentioned F1 and he is correct, if this was possible, the guys with 200 million dollar R&D programs would be doing it.
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Old 02-12-2010, 08:59 PM
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Lol yea, I was on another forum and they told me the same thing lol.

ohh well I guess Ima just have a carbon fiber header I can sell on eBay..... Somone will buy it hahaha
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Old 02-13-2010, 03:36 AM
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ill give you fifty liras and a ball of lint for it right now.
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