Harley Davidson Evolution Compression

To download our Evolution Big Twin machining services catalog or our head work sheet click here.

Harley davidson evolution compression. The engine is a SS-based Harley-Davidson Evolution V-Twin and is going to be in a Fast Bracket Race drag bike. Evolution is the key word as these Keith Black Performance Piston Kits were spawned from this successful manufacturers line of automotive pistons. Air-cooled Evolution Displacement 1200 cm3 Bore X Stroke 35x38 in OR 89 mm Compression Ratio 901 Horsepower 615500 KWhpRPM Torque 654000 lb.

The Evolution engine popularly known as Evo is an air-cooled 45-degree V-twin engine manufactured from 1984 by Harley-Davidson for the companys motorcyclesIt was made in the 1340 cc 82 cu in displacement for Harley-Davidson Big V-twins bikes replacing the Shovelhead engine until 2000 when the last EVO was placed in a production factory custom FXR4 FXR2 and FXR3 were the first CVOs. Kirby is in FLorida. The compression is only 1381.

Trending price is based on prices over last 90 days. Contrary to popular myth serious power can be made with stock Harley-Davidson heads without reshaping the combustion chambers polishing the ports and combustion chamber using a larger intake valves or making the ports larger. H-D Parts Screamin Eagle Evolution 1340.

The larger 1340 Evolution engine has a maximum HP of 58 at 5000 RPM and a top speed of 1025 MPH. 1340 FORGED PISTONS - 1051 010. To give that CNC finish on heads and cylinders.

This is considered the minimum compression ratio needed to make serious power from a. Keith Black pistons kit flat top 91 compression standard bore for Harley Davidson Sportster 1200cc. Changing the cam and upping compression on an Evo motor would be reason enough for compression releases.

The 1100 Evolution engine has a predictably higher maximum HP of 50 at 5500 RPM with a top speed of 1019 MPH. When the engine is assembled use one of the 030 inch thickness head gaskets instead of the normal 040 or 060 inch gaskets. The engine is easier to turn over resulting in less wear on your starter and battery.