addisj Posted June 20, 2014 Share Posted June 20, 2014 Apologies if you have all read this. If so, mod please delete! I found it really interesting. The Nissan 350Z power and sound befit a true sports car. Continuously Variable Valve Timing Control System (CVTCS) aided drivability and maximized low- and midrange torque. It also reduced valve overlap at idle for smoothness, and at cruising speeds it was configured to enhance fuel economy. Furthermore, CVTCS eliminated the need for an exhaust gas recirculation valve because the increased valve overlap it allowed permitted sufficient exhaust-gas to re-enter the combustion chambers and reduce combustion temperatures, thereby reducing oxides of nitrogen. To accomplish its tasks, CVTCS incorporated a 32-bit microprocessor for fast response. It analyzed a number of parameters including engine speed, engine load, throttle position and road speed. The processor directed a duty-cycle electric solenoid atop each cam cover to vary the oil pressure to the intake-cam timing-chain sprockets. As oil pressure changed, it moved the position of vanes inside the sprockets, rotating them relative to the camshafts and thus varying the intake-valve tinning. The result of all these efforts was a potent, tractable powerplant that was well-suited to a car intended to be both sporty and refined. In the inaugural 2003 350Z, the 3498-cubic-centimeter dual-overhead-cam, 24-valve V-6 produced 287 horsepower at 6200 rpm and 274 pound-feet of torque at 4800 rpm. That was up substantially from the VQ engine's applications in the Pathfinder and QX4 SUVs. Though peak power occurred at 6200 rpm, maximum torque was moved a bit higher in the rev range. Redline was 6600 rpm, signing off earlier than the 300ZX's 7000-rpm limit. The Sound of Z Power From the very start, a core goal of engineers working on the 350Z engine was to deliver a powerful sound from the intake and exhaust, without high-pitched, "tinny" mechanical sounds or the low-frequency booming or rumbling that can grow tiresome on long trips. From driving Italian exotic cars, such as the Maserati 3200GT and the Ferrari 360 Modena, F355 and F40, Nissan studied the "emotional" aspects of intake and exhaust sounds. Benchmarks for the 350Z's induction sound were the BMW M Coupe, Porsche Boxster, and Nissan Skyline GT-R. The exhaust sound was maximized at low engine speed (1000-3500 rpm), but quiet at normal cruising. And intake sound maximized at high engine speed (3500-6000 rpm) -- especially at wide throttle openings -- but toned down during cruising. Nissan used straight intake ducts and removed the 0.5 harmonic to give a "clear" intake sound. A variable intake manifold was not used in the 350Z. The 350Z's exhaust had reduced back pressure and was freer flowing than in any other Nissan. Its equal-length exhaust-manifold branches fed a large-diameter single pipe, which fluted to dual outlets aft of the rear axle. A complete dual system was discarded due to cost, weight and aerodynamics. Source: http://auto.howstuff...50z-design5.htm Quote Link to comment Share on other sites More sharing options...
KyleR Posted June 20, 2014 Share Posted June 20, 2014 They didn't try very hard because just about every exhaust on the market for the 350 sounds better, not to mention there really isn't any induction noise for the inclosed induction system. 1 Quote Link to comment Share on other sites More sharing options...
andybp Posted June 20, 2014 Share Posted June 20, 2014 (edited) They didn't try very hard because just about every exhaust on the market for the 350 sounds better, not to mention there really isn't any induction noise for the inclosed induction system. i don't know i think the standard 350 system sounds better than a lot of aftermarket systems it was just too damn quiet thats just an opinion not me being argumentative Edited June 20, 2014 by andybp Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 20, 2014 Share Posted June 20, 2014 I agree with Kyle ~ my 350 sounds much better with my after market Invidia exhaust system then it ever did with the standard Nissan system. Quote Link to comment Share on other sites More sharing options...
andybp Posted June 20, 2014 Share Posted June 20, 2014 I agree with Kyle ~ my 350 sounds much better with my after market Invidia exhaust system then it ever did with the standard Nissan system. maybe i'm just too old and prefer something more subtle Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 20, 2014 Share Posted June 20, 2014 I agree with Kyle ~ my 350 sounds much better with my after market Invidia exhaust system then it ever did with the standard Nissan system. maybe i'm just too old and prefer something more subtle Have you heard the Invidia system? Not in your face or OTT. Nice and quite grumble at lower RPM, comes alive after 2.5K-3K rpm and doesn't drone one bit. Really brings out the V6 sound nicely imo. Quote Link to comment Share on other sites More sharing options...
andybp Posted June 20, 2014 Share Posted June 20, 2014 I agree with Kyle ~ my 350 sounds much better with my after market Invidia exhaust system then it ever did with the standard Nissan system. maybe i'm just too old and prefer something more subtle Have you heard the Invidia system? Not in your face or OTT. Nice and quite grumble at lower RPM, comes alive after 2.5K-3K rpm and doesn't drone one bit. Really brings out the V6 sound nicely imo. in all honesty no but i look foreward to it now Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 20, 2014 Share Posted June 20, 2014 I agree with Kyle ~ my 350 sounds much better with my after market Invidia exhaust system then it ever did with the standard Nissan system. maybe i'm just too old and prefer something more subtle Have you heard the Invidia system? Not in your face or OTT. Nice and quite grumble at lower RPM, comes alive after 2.5K-3K rpm and doesn't drone one bit. Really brings out the V6 sound nicely imo. in all honesty no but i look foreward to it now Would love to show you if you lived closer. My days of some mental, stupidly loud exhaust deafening me and everyone around are long gone. Used to have an Impreza that had a very loud exhaust system, ...so loud in fact the dog at home would start barking about 3 minutes before I got home as he could hear me about a mile away from home driving behind my house. Much prefer something more subtle nowadays but still with a nice sound especially if I decide to put my foot down a little & go up the rev range. Quote Link to comment Share on other sites More sharing options...
andybp Posted June 20, 2014 Share Posted June 20, 2014 I agree with Kyle ~ my 350 sounds much better with my after market Invidia exhaust system then it ever did with the standard Nissan system. maybe i'm just too old and prefer something more subtle Have you heard the Invidia system? Not in your face or OTT. Nice and quite grumble at lower RPM, comes alive after 2.5K-3K rpm and doesn't drone one bit. Really brings out the V6 sound nicely imo. in all honesty no but i look foreward to it now Would love to show you if you lived closer. My days of some mental, stupidly loud exhaust deafening me and everyone around are long gone. Used to have an Impreza that had a very loud exhaust system, ...so loud in fact the dog at home would start barking about 3 minutes before I got home as he could hear me about a mile away from home driving behind my house. Much prefer something more subtle nowadays but still with a nice sound especially if I decide to put my foot down a little & go up the rev range. know exactly what you mean i had a capri with a 3.9 v8 and 2 cherry bombs as a system couldnt hear for at least 5 min after i got out of it 1 Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 20, 2014 Share Posted June 20, 2014 ^^ Haven't heard someone mention "cherry bomb" exhausts back boxes in a loooooong time. Next you'll be telling me you had a Peco big bore 4. 1 Quote Link to comment Share on other sites More sharing options...
andybp Posted June 20, 2014 Share Posted June 20, 2014 oh now who's showing his age mine were actually cherry bomb muff divers Quote Link to comment Share on other sites More sharing options...
GMballistic Posted June 20, 2014 Share Posted June 20, 2014 oh now who's showing his age mine were actually cherry bomb muff divers Think we should be friends. 1 Quote Link to comment Share on other sites More sharing options...
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