hot rod Posted February 25, 2015 Share Posted February 25, 2015 I want 120hp from my EA 81 for an airplane, total weight muse be <200lbs. I don't want the complexity of a turbo. So, should I use a use a supercharger [which one?]; bore [re-sleeve] & stroke it for low rpm direct drive, or modify for high rpm reduction drive? Quote Link to comment Share on other sites More sharing options...
Crazyeights Posted February 25, 2015 Share Posted February 25, 2015 http://www.ramengines.com/ Quote Link to comment Share on other sites More sharing options...
Crawlerdan Posted February 26, 2015 Share Posted February 26, 2015 that website makes my pants fit funny 1 Quote Link to comment Share on other sites More sharing options...
Uberoo Posted February 26, 2015 Share Posted February 26, 2015 RAM 115A is a EA81.Its looks like they upped the compression ALOT(requires 93 octane gas, verses a standard ea81 that is quite happy on camp fuel),Then it is fuel injected.I don't think they bored or stroked the engine though. So try 11:1+ compression,a cam that makes power around 5K rpm,then adapt a EJ18 MPFI and computer to work on it. Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted February 26, 2015 Share Posted February 26, 2015 Look Here: Information: ~► http://jodel.com/index.asp?p=subaru2&engines Other EA81 for Aviation Vendor: ~► http://www.foxcon.com/Subaru-EA81.html Foxcon develop a Different setup than RAM engines. Kind Regards. Quote Link to comment Share on other sites More sharing options...
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