02/10/2025
54mm bores have a corrected head volume change of .23cc for every .1mm base gasket change, so be careful you don't turn your racer into a disaster not knowing your deck height and head volume. And for us poor folk with older 56mm bores its .25cc change with every .1mm change in base gaskets. Very important to know your deck height and cylinder head volume. Much more important than your squish clearance. Take notes to know your base settings before tearing your engine down. Also a leak down test after a seizure to see if a bad seal or leak was the cause.
