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2012-2013 Boss 302 Mustang
Boss 302 and Cobra Jet intake with boost question?
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<blockquote data-quote="JohnRichard" data-source="post: 13672339" data-attributes="member: 156405"><p>Maybe Im wrong, but...</p><p>If the engine had a cylinder size that would expand then the larger volume with relatively no or little pressure change would work... more o2 molecules</p><p>You would have to increase the fuel amount to burn at the proper AFR resulting in a larger BOOOOM minus compression ratio.</p><p>But the cylinder walls do not expand, well a minute amount, they stay constant and only hold so many o2 molecules at 1 atmosphere... This can only change naturally when the barometric pressure changes the atmosphere in the cylinder area. To aid this, decreased air flow restrictions allow more air to flow at a higher velocity into the cylinder area to get as close as possible to 1 atmosphere helps. While better exhaust scavenging removing spent gases and improve the air quality in the combustion chamber resulting in more power... This helps as well.</p><p> </p><p>Forced induction increases the atmospheric pressure in the cylinders combustion chamber. Forced induction is affected less by barometric pressure changes...</p><p>Force induction has few limits, what limits forced induction,,, the pump, heat generated by compression of air, the container the air is being compressed into and the heat at where the fuel ignites...</p><p></p><p></p><p>OK so lets say we are at 2000 feet above sea level and the DA is roughly 3000. The barometric pressure in PSIA is 13.5 pounds, yes this true science ... so we are going to apply 2 pounds of boost. this gives us a new PSIA of 15.5 pounds. or we increased our atmosphere by 15%... So in doing this... We increased the amount of o2 molecules by 15% and we now have a new pressure for or piston to compress, at say 11:1 so now we now have all this pressure in our chamber ready for a big BOOM... 10 pounds of boost now we are at 23.5 PSIA, we have increased or o2 molecules by 72 percent depending on outlet air temperature and that times our compression ratio and the added fuel and even a more of big boom , a really big boom...</p><p></p><p>How the Boss or Cobra Jet Intake will help over the stock coyote running forced induction they will apply their design physics at the RPM's the runner lengths were designed for... Your coyote intake will fall short at 6800 just like when it sucked air... The same with the Boss and the CJ, both have a peak RPM</p><p>2014 Super Cobra Jet is a 5.0 with twin turbos flowing through the CJ intake.</p><p></p><p>So in conclusion.</p><p>2 pounds of boost is 2 pounds of boost...</p><p></p><p></p><p>Sorry OP call 1-800-367-3788, option 2 Ford Racing Parts number</p></blockquote><p></p>
[QUOTE="JohnRichard, post: 13672339, member: 156405"] Maybe Im wrong, but... If the engine had a cylinder size that would expand then the larger volume with relatively no or little pressure change would work... more o2 molecules You would have to increase the fuel amount to burn at the proper AFR resulting in a larger BOOOOM minus compression ratio. But the cylinder walls do not expand, well a minute amount, they stay constant and only hold so many o2 molecules at 1 atmosphere... This can only change naturally when the barometric pressure changes the atmosphere in the cylinder area. To aid this, decreased air flow restrictions allow more air to flow at a higher velocity into the cylinder area to get as close as possible to 1 atmosphere helps. While better exhaust scavenging removing spent gases and improve the air quality in the combustion chamber resulting in more power... This helps as well. Forced induction increases the atmospheric pressure in the cylinders combustion chamber. Forced induction is affected less by barometric pressure changes... Force induction has few limits, what limits forced induction,,, the pump, heat generated by compression of air, the container the air is being compressed into and the heat at where the fuel ignites... OK so lets say we are at 2000 feet above sea level and the DA is roughly 3000. The barometric pressure in PSIA is 13.5 pounds, yes this true science ... so we are going to apply 2 pounds of boost. this gives us a new PSIA of 15.5 pounds. or we increased our atmosphere by 15%... So in doing this... We increased the amount of o2 molecules by 15% and we now have a new pressure for or piston to compress, at say 11:1 so now we now have all this pressure in our chamber ready for a big BOOM... 10 pounds of boost now we are at 23.5 PSIA, we have increased or o2 molecules by 72 percent depending on outlet air temperature and that times our compression ratio and the added fuel and even a more of big boom , a really big boom... How the Boss or Cobra Jet Intake will help over the stock coyote running forced induction they will apply their design physics at the RPM's the runner lengths were designed for... Your coyote intake will fall short at 6800 just like when it sucked air... The same with the Boss and the CJ, both have a peak RPM 2014 Super Cobra Jet is a 5.0 with twin turbos flowing through the CJ intake. So in conclusion. 2 pounds of boost is 2 pounds of boost... Sorry OP call 1-800-367-3788, option 2 Ford Racing Parts number [/QUOTE]
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Boss 302 and Cobra Jet intake with boost question?
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