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 4-2-1 vs 4-1 header for Iswara 1.3

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GoldenHawk
post Apr 22 2008, 12:01 PM

The Forgotten
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Go for the 4-2-1.
Not many people can get the hang of the 4-1 setup.

You changing your muffler as well? unsure.gif
GoldenHawk
post Apr 22 2008, 12:31 PM

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QUOTE(the_catacombs @ Apr 22 2008, 12:27 PM)
what u mean by sanding the carburetor??.. unsure.gif
*
I think he means porting/polishing the carb laugh.gif

GoldenHawk
post Apr 24 2008, 12:28 PM

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QUOTE(ryan_hustler @ Apr 24 2008, 11:11 AM)
midbox is just an empty metal tabung,since it has a higher volume,the exhaust gas gets slowed down..the best setup will be to keep the velocity of the exhaust gas high so it can exit the engine without restrictions and the fastest possible way..i dont understand why people say backpressure is necessary..i think the best setup will be a straight pipe from the extractor till the end but this is bloody hell loud hence the need for muffler and bullets..
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Google up "exhaust scavenging"... smile.gif

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