Harley Davidson Evolution Compression Ratio

Every ounce of power is just a whole lot of fun.

Harley davidson evolution compression ratio. Boost Compression Ratio Calculator. CA XLH 883 CJ HLH 883 Custom CE XLH 883 Hugger CA XLH 1200 CG XL 1200C Custom CH XL 1200S Sport. Harley Davidson Compression Ratio And Cam Timing - YouTube.

After looking at the harley web page and seeing the stock compression ratio for the sportsters being only about 891 I have to ask has anyone milled the. 500 pounds which feels just incredibly light maneuverable on the road. Wiseco pistons 851 compression ratio Standard 3497 030 Oversize Bore.

Cylinder Heads This what a stock EVOLUTION combustion chamber looks like with stock sized valves. When the engine is assembled use one of the 030 inch thickness head gaskets instead of the normal 040 or 060 inch gaskets. The crank rod started to shred shinny metal and WHOOPSY.

Generally speaking you should be safe to run 87 octane on a 103ci Twin Cam Harley because its compression ratio is less than 101. Another factor that is affected by cylinder head material is fuel octane. Rake and Trail Calculator.

Revolution Max 1250 Engine Technical. This will give the engine a mechanical compression ratio of almost 951. Can be 0 - 9 or X.

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 overhead cam design allowed a more efficient combustion chamber design with a 9-to-1 compression ratio providing a 10 percent power increase over the previous Evolution engine. 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.