Any benefit to converting stock mufflers to single pass?
07-30-2003, 09:24 AM
#12
Registered User
It's the pipe that sticks out perpendicular. A Helmholtz filter is a band-stop filter that suppresses a certain range of frequencies without impacting the energy of the signal. You should be able to Google about it if you're interested in the math and such.
07-30-2003, 09:58 AM
#14
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If you are doing a search for a definition or explanation, it is more commonly known as a Helmholtz resonator.
I made a few large ones for my listening room. Fun stuff.
I made a few large ones for my listening room. Fun stuff.
07-30-2003, 10:11 AM
#15
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[QUOTE]Originally posted by Ubetit
[B]If you are doing a search for a definition or explanation, it is more commonly known as a Helmholtz resonator.
I made a few large ones for my listening room.
[B]If you are doing a search for a definition or explanation, it is more commonly known as a Helmholtz resonator.
I made a few large ones for my listening room.
07-30-2003, 10:50 AM
#17
Registered User
My plan is to retain the pre-muffler - it's not my area of expertise in any way, but stuff I've read in the muffler design document Todd put up on the Prelude club's website suggests having just such a chamber is very advantageous. Of course, it might best work in harmony with the stock downstream exhaust design, but this whole endeavor is mostly guesswork anyway. In any case, my plan is to not have any muffler at all, so retaining the pre-muffler might be good for sound quality.
07-30-2003, 11:53 AM
#20
Registered User
The balance point of the OEM exhaust (front to back) is right at the loops that stick out behind the mufflers. (The one gernby is talking about modifying.) Given a 50lb weight, that means each canister is about 12lbs, and the piping is another 25lbs. I'm hoping my idea won't weigh over 20lbs total.
Greg, now that I understand better what you're trying to do (the pictures don't display for me) I think what you're trying to do would be counterproductive. I believe that a specific goal of "twin loop" muffler designs like that is to quiet things down without impacting flow. Changing things around is unlikely to benefit flow any. It'll probably be somewhat louder, but the effort in redirecting the piping probably isn't worth it.
Greg, now that I understand better what you're trying to do (the pictures don't display for me) I think what you're trying to do would be counterproductive. I believe that a specific goal of "twin loop" muffler designs like that is to quiet things down without impacting flow. Changing things around is unlikely to benefit flow any. It'll probably be somewhat louder, but the effort in redirecting the piping probably isn't worth it.