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Posted

if exit diameter of the end cone is somewhat close to correct then stinger length will matter very little. i suspect if various stinger lengths were affecting the pipes performance then the restriction at the last cone probly wasnt correct to begin with. ive got a ton of literature by the leading most authorities regarding expansion chambers so i know a couple things about it

Posted

this one i designed around a 373cc. all the length and diam values have been removed for obvious reasons but you get the idea what it looks like

 

pp1_zpsb5afeuny.png

When this is built, I want to see stingers out past the rear tires. And you tell me it'll run the same as if they were shorter.

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