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gsxrken gsxrken is offline
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Join Date: Sep 2002
Location: Westchester County, NY
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Originally Posted by copbait73 View Post
“Must reduce volume in the exhaust”…….
The words that best describes what a turbine desires most is no expansion before reaching the turbine followed by maximum expansion through the turbine. In real terms, the difference in volume causing boost delay between equal length systems and Other is mice nuts when you look at the sweep volume of 3.3L at 2500RPM.
I thought the same thing as soon as I read that. While I am reluctant to dispute with Squirrel and DonE (their posts are always spot-on it seems), it seems to me that in a mere two crank revoultions the pistons will push 3.3 liters of air into the exhaust system. It doesn't seem intuitive that a wee bit more volume due to routing choices could be material or not made up in one 4-cycle event. Pulse/wave etc is a different story perhaps, but that varies by RPM and cam architecture and is further complicated with a turbo sitting on the end of the system.
1986 930, 1969 Mach1, 2003 540 Sport, 2016 R1200RS
Old 01-09-2010, 11:10 AM
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