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Old 11-20-2012, 06:15 PM   #1 (permalink)
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Exhaust heat

How hot is the exhaust when it come out of the head and into the pipe.

I am looking to make a Carbon Fiber exhaust system. Pipe and muffler. Currently I am looking at the heat shield to be made from Carbon Fiber. I would rather have the whole system done.

I need to know the temp of the exhaust so I can find a resin which will not melt when used.

thank you for your thoughts,

Glenn
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Old 11-20-2012, 11:21 PM   #2 (permalink)
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With all due respect, if you are asking for exhaust temp, maybe engineering isn't going to be your thing.

I would think you could see gas temps approaching 1500 F, but of course a typical safety factor would be be about 2.
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Old 11-21-2012, 06:03 AM   #3 (permalink)
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Take a sample of the exhaust you want to use and see if it will withstand fire.Have never heard of resins that will withstand heat like that.
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Old 11-21-2012, 08:07 AM   #4 (permalink)
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You may want to speak with Jamie at Fuel Moto about this, he offers a carbon fiber slip on muffler for baggers. The heat a few inches out of the head and at the muffler are two different things though.
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Old 11-21-2012, 11:33 AM   #5 (permalink)
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EGT's (exhaust temps) are shown here in Cyl#1, and Cyl#2 coming right out of the head.
This is from a high performance HD motor I used to run but 1,000-1,200 degrees is a good estimate.
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Old 11-21-2012, 05:13 PM   #6 (permalink)
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Thanks guys. This will not work. Back to thinking about heat shield or exhaust pipe covers or replacement to the crome.
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Old 11-25-2012, 08:18 PM   #7 (permalink)
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Look into Ceramachrome pipe coating.
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Old 11-26-2012, 06:39 PM   #8 (permalink)
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Man, even formula 1 cars that have carbon fiber EVERYTHING use stainless headers??? Shields, no problem.
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