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Message: <blockquote data-quote="rollakid" data-source="post: 1362202" data-attributes="member: 6588">hmm.. let me get some facts together and see how they fit..old turbocharger have bad effeciency, such as the toyota ct turbines, mostly from 60%-70% effeciency, turbo have bad effeciency cuz the heat from the exhaust gas will heat up the intake air.root type charger also generate alot of heat itself because of all the friction it generates, some sc comparison tech article (from random memory of mine, can't really prove it right now) claim root type charger have only 50+% effeciency, although i do not know 4agze's sc12's, although i read in numbers of forum and people are complaining it is inefficient, and say it is prone to heatsoak.4agze come with top mount i/c, which is less effecient than front mount anyway, and i don't really like toyota's oem i/c, people are complaining it isn't efficient as well.so even if they can make the total efficiency of the sc12 to 70% with the i/c, you are still talking about a centrifugal sc here.. which so far i read from catalogs (yeah, marketing gimmicks are debatable.. but they are the only source what...) centrifugal have at least 85% efficiency (vortech brand.. dunno about raptor, rotrex claims to have 96-98%).so.. 20-25% effeciency difference, i think the 40hp difference should still be in the "logical" range.btw, all centrifugal sc feeds on engine oil right? that means if we add oil cooler to the engine then the effeciency of the supercharger will increase as well?</blockquote>

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