Anyone run a cherrybomb glasspack?
Im thinking of doing a downpipe to a cherry bomb and then dump it before the diff. Im intrested in how they sound, they look very non restrictive and cheap!
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Nope, but plan to. Well, they are glass packs. I plan to run as many feet of them as possible to the rear, then a muffler. FWIW, the sound deadening affects grow exponentially with glass packs. For example, compare a 2' and 3' glass pack, the 3' cuts out almost twice as much as the 2' one. For what your doing, try to get a 4' one with a turndown at the end. They used to make 4' glasspacks, but I haven't been able to find them. Still, I plan to squeeze 6-7 feet of them into my exhaust system.
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dont use the cherry bomb. it's louvered like a cheese grater inside. reduces flow significantly compared to a perforated core.
http://store.summitracing.com/partde...5&autoview=sku maybe a few more bucks, but worth it. |
Y8s, isn't that a resonator, not a glasspack?
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me and compy both heard a cherrybomb on a 1.6 miata over the summer when i picked up my hardtop in philly. we both agreed that it sounded like shit.
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I looked inside the cherrybombs at pepboys, they dident have louvers, it was just straight through with holes (not louvers).
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Well its eaither cherry bomb or straight downpipe..
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How about two running down the sides like an old school hot rod?
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take a look at lightweightmiata.com. Member rmcelwee has some videos on that site as well as youtube. Sounds pretty ok for such a simple system, I think.
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Originally Posted by patsmx5
(Post 240876)
Y8s, isn't that a resonator, not a glasspack?
its a straight through muffler, if used in conjunction with another muffler, it then becomes a resonator. |
Originally Posted by miatamania
(Post 240885)
Yeah...which means it wont restrict flow or get the raspy ass sound....so its better all the way around.
its a straight through muffler, if used in conjunction with another muffler, it then becomes a resonator. |
what's the difference? it's a cylindrical muffler or a cylindrical muffler painted red. they are the same. perforated flow tube surrounded by fiberglass roving encased in another metal tube.
just make sure whatever you get isn't louvered. yeah, robert did a dump-bomb just like you describe. dont expect it'll be quiet! :ugh2: |
Glasspacks use fiberglass as the sound absorbing media. Resonators use steel mesh, or steel wool. The steel doesn't absorb sound as well, but it last longer. They are not the same.
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2 Attachment(s)
heres what i did,
3" right after the first bend on the greddy dp so only like 4 inch's of the greddy dp remain so i dont touch the hoses and crap i ran a straight line, no cat , to this http://cgi.ebay.com/ebaymotors/Magna...spagenameZWDVW its very quiet, and sounds very nice when i romp on it no rasp what so ever heres how it looks Attachment 213571 Attachment 213572 |
Looks great.
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Originally Posted by patsmx5
(Post 240894)
Glasspacks use fiberglass as the sound absorbing media. Resonators use steel mesh, or steel wool. The steel doesn't absorb sound as well, but it last longer. They are not the same.
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Originally Posted by urgaynknowit
(Post 240896)
heres what i did,
3" right after the first bend on the greddy dp so only like 4 inch's of the greddy dp remain so i dont touch the hoses and crap i ran a straight line, no cat , to this http://cgi.ebay.com/ebaymotors/Magna...spagenameZWDVW its very quiet, and sounds very nice when i romp on it no rasp what so ever heres how it looks http://i60.photobucket.com/albums/h2...IMG00121-1.jpg http://i60.photobucket.com/albums/h2...IMG00122-1.jpg |
Originally Posted by hustler
(Post 241066)
looks like crushbent garbage to me.
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Originally Posted by Saml01
(Post 241068)
On a pipe that big it wont make a difference.
crushing a 3" pipe by just a half inch results in a 7.7% loss in flow area. |
Originally Posted by Saml01
(Post 241068)
On a pipe that big it wont make a difference.
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