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Cobra Forums
2015+ Shelby GT350 Mustang
CJ manifold and E85, who has most NA power?
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<blockquote data-quote="sumfoo1" data-source="post: 16012343" data-attributes="member: 179176"><p>No, that is not how positive displacement superchargers work. you see, the 6.2 liter only fires every other rotation so is functionally only a 3.1 liter and then the drive ratio (2.36:1) on the 2.4 liter supercharger is what crams 5.664 liters of air into that 3.1 liter engine and makes boost.... that my friend is how a positive displacement supercharger works you'll notice that the displacement ratio 5.664/3.1 (1.827) is a very similar ratio to the boost pressure (14.7+11.6)/14.7 ratio (1.789) and the difference between the two is.... you guessed it! the efficiency loss of the compressor!</p></blockquote><p></p>
[QUOTE="sumfoo1, post: 16012343, member: 179176"] No, that is not how positive displacement superchargers work. you see, the 6.2 liter only fires every other rotation so is functionally only a 3.1 liter and then the drive ratio (2.36:1) on the 2.4 liter supercharger is what crams 5.664 liters of air into that 3.1 liter engine and makes boost.... that my friend is how a positive displacement supercharger works you'll notice that the displacement ratio 5.664/3.1 (1.827) is a very similar ratio to the boost pressure (14.7+11.6)/14.7 ratio (1.789) and the difference between the two is.... you guessed it! the efficiency loss of the compressor! [/QUOTE]
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2015+ Shelby GT350 Mustang
CJ manifold and E85, who has most NA power?
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