Harley Davidson Evolution Compression Ratio

This is in contrast to all previous Harley Davidson engines where the cams were located in the crankcase and drove the valves through pushrods.

Harley davidson evolution compression ratio. Compression Ratio 891 Horsepower KWhpRPM Torque 793000 lb-ftRPM OR 1073000 NmRPM Fuel System carburetor or Electronic Sequential Port Fuel Injection ESPFI. Cylinder Heads This what a stock EVOLUTION combustion chamber looks like with stock sized valves. Compression Ratio 851 Horsepower 504000 KWhpRPM Torque 693000 lb-ftRPM OR 943000 NmRPM Fuel System carburetor.

Harley-Davidson may make changes at any time to prices and specifications and may change or discontinue models without notice and without incurring any obligation. This is considered the minimum compression ratio needed to make serious power from a Harley-Davidson engine. Since no compression builds until after the intake valve closes its the corrected compression ratio that gives the best indication of how pump gas friendly your motor will be.

THIS ARE MY HIGH COMPRESSION ISSUES I have gone with wiesco 1051 about 215217 lbs of static compression on the cyls. The latter option is preferred in the burgeoning Flat Track series. While much of Harleys range is based around the 1340cc 8174ci so-called Big Twin Evolution engine unit the company has produced a unit for the Sportster range based around a unit construction engine.

Harley Davidson Compression Ratio And Cam Timing - YouTube. But with the 1200cc Evolution and the 1247cc. Premium pump gas in the US.

Wiseco pistons 851 compression ratio Standard 3497 030 Oversize Bore. Inlet Runner Design and Torque Peak Calculator. Harley Advanced Dynamic Compression Calculator.

Mach Index of Inlet Valves Calculator. The customer has the choice of stepping up to a slightly higher 951 compression ratio or going whole-hog with the 101 ratio. Twelve to one compression ratio and a peak RPM of ninety-five hundred.