http://www.rbracing-rsr.com/comprAdvHD.htm

no tengo muy claro aun si el arbol de serie XE cierra a 55 o a 62º asi ke pongo ambas opciones en el calculador:



CRD and cranking pressure 20xe(resultados calculador)
55º
Your engine summary is as follows: Bore 3.858 inches, stroke 3.858 inches, rod c-c length 5.5118 inches, with a static compression ratio of 10.5 :1. Your camshaft specifications call for an inlet valve closing of 55 degrees ABDC (after bottom dead center).
Your chamber volume is 77.80 cc's.
your dynamic, or effective stroke is 3.27 inches.
Your dynamic compression ratio is 9.05 :1 corrected for cam timing, altitude, and rod length.
Your dynamic cranking pressure, corrected for cam timing, rod length and altitude is 186.37 PSI.(12.86bar)

62º
Your engine summary is as follows: Bore 3.858 inches, stroke 3.858 inches, rod c-c length 5.5118 inches, with a static compression ratio of 10.5 :1. Your camshaft specifications call for an inlet valve closing of 62 degrees ABDC (after bottom dead center).
Your chamber volume is 77.80 cc's.
your dynamic, or effective stroke is 3.10 inches.
Your dynamic compression ratio is 8.63 :1 corrected for cam timing, altitude, and rod length.
Your dynamic cranking pressure, corrected for cam timing, rod length and altitude is 175.33 PSI.
(12.1bar)



preguntas: cuantos km tiene?
se ha rebajado culata?