the et displaced and was an sohc 12-valve engine. et1 had a single, downdraft carb with 4-1 exhaust manifold. the et2 with dual sidedraft carburetors and 4-2-1 exhaust manifold produced at 5,500 rpm and at 4,000 rpm. jdm versions included a triple-barrel carburetted version for the accord ( at 5,800 rpm) and one with honda pgm-fi which produced at 5,800 rpm.