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| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
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#1
11-07-2003, 11:16 AM
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Muffler sound
I want to improve the sound of my 1991 Nissan pickup, 4 cyl. I have heard that drilling holes before the muffler will improve sound, anyone know anything about this?
As for mufflers I don't know which one to get... around the $30-70 range I've looked at Cherry Bomb glasspacks, Flowtech Raptor or Afterburner, Flowmaster ones, Dynomax ones... I don't want to pay a lot of money though... 
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#2
11-08-2003, 11:18 AM
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Re: Muffler sound
I don't think drilling a hole in you rexhaust is a good idea. You are just asking for it to rust off. The Cherrybombs are pretty loud and sound good. i had one ghetto-rigged on my '89 Saab 900 and it sounded good (except when it fell off). Just don't drill the holes.
__________________
Promoter of the one line signature.
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#3
11-12-2003, 03:50 PM
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Re: Muffler sound
There are two main types of mufflers--glasspacks and chambered. A glasspack is a perforated tube with fiberglass around it to absorb sound. A chambered muffler comes on most vehicles stock, and it uses different length chambers to create interference, which will shape the sound into basically anything the designers want. Glasspacks are usually louder, they are usually cheaper, and they do burn out over time. Chambered never fail, unless they rust, and are usually quieter and more expensive. Less chambers=louder.
Jon
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#4
11-13-2003, 02:54 AM
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That makes things a little clearer for me... I think I'm going to get a Cherry Bomb glasspack. I believe my piping is all 2"... so should I keep it like that and just throw a nice chrome tip on the end, or should I change my piping size to bigger?
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#5
11-13-2003, 03:03 PM
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Re: Muffler sound
Keep the same size.
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#7
11-13-2003, 09:38 PM
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Re: Muffler sound
Sort of--it all depends on your engine and how long the pipes are and muffler type. You usually get a deeper sound out of bigger piping, not necessarily louder.
Jon
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#8
11-13-2003, 10:32 PM
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I want deeper sound... because it's only a 4 cyl and I don't want the "ricey" sound. I might just get 2.5" piping all the way back from the muffler... or 3 if that's possible... to deepen the sound.
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#9
11-13-2003, 11:11 PM
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Re: Muffler sound
It is hard to get around the ricey sound on 4 cylinders. It has much more to do with the engine design than size of exhaust. If you want less ricey sound, go with chambered. 90% of imports have glasspacks on them.
Jon
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#11
11-14-2003, 12:32 PM
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Probably not, keeping everything else stock. You catalytic converters soak up alot of sound, as does the relatively small piping. You would have to replace more than a muffler to make your car loud; to simply make it the loudest for the cheapest, get the cherry bomb glasspack.
Jon
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#12
11-14-2003, 01:52 PM
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Yeah I don't want to do anything more costly than just a muffler... and I can't mess with catalytic converter or anything I don't think because I still have to take this truck through Aircare! Now I'm thinking about getting the Flowtech Red hot glasspack, available in 2", 2.25" and 2.5"... for only $19.50 at Lordco plus my 30% discount. The cherry bomb glasspack is $33.00 at Canadian Tire.
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#13
11-14-2003, 04:17 PM
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Re: Muffler sound
Why don't you just cut off the muffler?
__________________
Some things are impossible, people say. Yet after these things happen, the very same people say that it was inevitable.
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#14
11-14-2003, 06:29 PM
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Re: Muffler sound
Good point 454. The sound would probably be what he is looking for.
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