05-05-2008, 05:48 AM
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CC Member
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Join Date: May 2002
Location: Ashburton, New Zealand,
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Cobra Make, Engine: UK Ram SC. KC-Yates 373, Jerico 5 speed.
Posts: 1,240
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Sidepipe/muffler diameter
I am starting to build my sidepipes, and have room for about a 22" long muffler and 10-12" long 3.5" turnout pipe! Have some 3" perforated tube organised, I maybe better to go to a 4.5" diameter sidepipe case for more noise reduction, that leaves 3/4" all round inside for sound proofing material over a 4" muffler with 1/2" room for glasspacking, so I wonder if the extra 1/4' of glasspack will actually make a difference if I went to the larger 4.5" tubing, and I guess the larger the tube the uglier it gets! The benefit maybe in slowing the gas flow down with the larger tubing.
For extra noise reduction, I have seen to good effect 3-4 small perforated tubes same length as the 3" tube, used as a removable baffle, apparently this makes a significant sound reduction, but should allow me to do a small bit of town driving!
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A J. Newton
The 1960's rocked!
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