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Ghoste
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« on: May 24, 2008, 08:35:01 AM » |
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I know on the surface this question seems like it belongs in another forum but I suspect the answer lies somewhere in this one. Last night at a cruise event here in town, myself and a couple of friends opened our exhaust. They both have VERY strong blue oval products and my car was far louder than theirs. I've noticed this before at dragstrips and I just figured for sure one of the regular racers here would know the reason.
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Nacho-RT74
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« Reply #1 on: May 24, 2008, 08:46:30 AM » |
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dunno really why, but is a fact that even with STOCK parts, Mopars are already louder
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Ghoste
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« Reply #2 on: May 24, 2008, 08:53:42 AM » |
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Would it have anything to do with flow velocity in the exhaust ports?
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Runner
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« Reply #3 on: May 24, 2008, 08:14:05 PM » |
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im really not sure they are louder. i think it just depends on alot of things. my buddy that passed away had a bb nova that ran 11.70s and its louder than my junk is when they are both uncapped. in fact im a little jelous of how good it sounds.
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 71 roadrunner 452 e heads 11.35@119 mph owned sence 1984 72 panther pink satellite sebring plus 318 68 satellite 383 4 speed 13.80 @ 102 mph my daily driver 69 superbee clone 440 daughters car 72 dodge dart swinger slant six |
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Silver R/T
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« Reply #4 on: May 24, 2008, 10:56:00 PM » |
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im really not sure they are louder. i think it just depends on alot of things. my buddy that passed away had a bb nova that ran 11.70s and its louder than my junk is when they are both uncapped. in fact im a little jelous of how good it sounds.
exactly, depends if its big block/small block, what size headers, brand, equal length or not, etc. |
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http://www.cardomain.com/id/mitmaks  1968 silver/black/red striped R/T Like the tiger, you can see his stripes but you know he's clean... 2001 Ram 2500 CTD 1993 Mazda MX-3 GS SE 1995 Ford Cobra SVT#2722 If you don't have the best-you're just running with the rest
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aifilaw
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« Reply #5 on: May 25, 2008, 07:53:39 AM » |
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The sound presentation is directly related to the velocity and inversely the static pressure in the open headers, followed by the resonance created by where it is piped out (hall effect and echo)
The sound production is directly related to the cylinder volume, engine speed, valve speed, port velocity, et cetera.
In other words, chevy, ford, or chrysler. They call can be made to be as loud or quiet as you want with the right combo.
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Challenger340
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« Reply #6 on: May 25, 2008, 06:58:45 PM » |
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Camshaft is a factor also.
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Only wimps wear Bowties !
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morepower
Junior Member
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Posts: 67
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« Reply #7 on: June 27, 2008, 06:34:05 PM » |
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if your detonation is happenin in the exhaust your car will be louder also, usually louder cars are more out of tune.
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Ghoste
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« Reply #8 on: June 27, 2008, 09:21:43 PM » |
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It's in tune.  |
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mally69
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« Reply #9 on: June 28, 2008, 06:00:46 AM » |
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Mike DC (formerly miked)
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« Reply #10 on: June 28, 2008, 11:19:29 AM » |
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It's sorta like asking why one chick looks so much better in the same cutoff shorts than another one does.
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Rolling_Thunder
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« Reply #11 on: June 30, 2008, 12:25:04 AM » |
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I dont know man... I've heard a 426 Hemi with open exhaust and it was not as loud as my friend;s father's BOSS 429 with open headers  |
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Alex Campadonia ~1968 Dodge Charger "SRT8" --- 6.1L Hemi, 5-speed, 3.91 Sure Grip ~1969 Plymouth Road Runner --- 440+6, 4-speed, 4.10 Sure Grip ~1966 Plymouth Satellite Convertible --- 318 Poly, Torqueflite, 3.23 Sure Grip http://www.iconengineeringinc.com |
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Ghoste
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« Reply #12 on: June 30, 2008, 09:02:41 AM » |
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That's interesting, were they both stock? The guys Fords that made me first post this are both FE engines (428 SCJ in both), but it has also seemed to me like big block Chevy's are not real loud.
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Rolling_Thunder
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« Reply #13 on: July 01, 2008, 08:40:59 PM » |
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That's interesting, were they both stock? The guys Fords that made me first post this are both FE engines (428 SCJ in both), but it has also seemed to me like big block Chevy's are not real loud.
yep - both stock.... the 429 sounded BAD ASS... but this was a street hemi... i'm sure a Race Hemi would have been different |
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Alex Campadonia ~1968 Dodge Charger "SRT8" --- 6.1L Hemi, 5-speed, 3.91 Sure Grip ~1969 Plymouth Road Runner --- 440+6, 4-speed, 4.10 Sure Grip ~1966 Plymouth Satellite Convertible --- 318 Poly, Torqueflite, 3.23 Sure Grip http://www.iconengineeringinc.com |
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