1999 Ford F-150 Lightning Kenne Bell Blower Swap
Eaton vs. Autorotor -- Charge Temperature
One of the measures of efficiency is charge temperature. Compres-sing the air in any blower results in heat. Obviously we want as little heat as possible, as heat is a major cause of detonation. The ideal supercharger flows a substantial amount of air with minimal heat production. This graph illustrates the difference in charge temperature between the Eaton and Autorotor superchargers produced at 9 psi. Note that both temperature curves climb as boost increased during the run. More boost pressure equals a higher temperature. Note that the Eaton (upper line) increased at a much higher rate than the Autorotor. The Eaton peaked out at 207 while the temperature exiting the more efficient Autorotor only reached 165. The difference in charge temperature between the two superchargers was a full 42. Lucky for the Lightning owners, the intercooler used on the 5.4 is exceptional and the charge temperatures exiting the intercooler core were nearly identical. View Related Article
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