Engine & Performance for 1990 Harley-Davidson FLHS Electra Glide Sport

Engine & Performance for the 1990 Harley-Davidson FLHS Electra Glide Sport

The 1990 Harley-Davidson FLHS Electra Glide Sport features Engine: Evolution V-Twin, 45-degree, OHV, Displacement: 1340cc (81.6 cu in), Cooling: Air-cooled, Fuel System: 38mm Keihin constant velocity carburetor. Owner note: The 'Evo' engine is notorious for 'weeping' oil at the base of the cylinders; often requires replacement with improved multi-layer steel (MLS) gaskets. Known concern: Cylinder Base Gasket Leaks — Commonly referred to as 'Evo Weep'. Not usually a performance issue but creates a mess.. Learn more about this ride →