Helmholtz resonator - Saab Vintage Models Bulletin Board - Saabnet.com
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Helmholtz resonator
Posted by don WollDm [Email] (more from don WollDm) on Mon, 18 Jul 2005 03:14:45
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The Darth Vader air cleaner used on stroker tri carbs after 65 actually has sound altering device built into the top section one removes to gain acess to the air cleaner. There are quite a few "modern cars that tune the induction sound of their engines, but way back then Saab did too. If you had ever driven the 63-64 GT with the three little air filters, sans Helmholt's device , the sound is much different. Some said this also kept fuel in the venturi tower more stabil, and less lean, but I think the tri tower connectror tubes were also developed to harness the fuel momentum energy lost by the spit back sound wave when the piston quickly slammed the intake port shut.
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