Egge machine go as big as .187 over that is 3 times .060" of course you can bore more than .060" over. Not a true statement that .060" is where you should stop. If everything checks out OK bore to the first size that will clean up at, if that is what you want.Your machinist will know how to measure. The valve angle is 45 deg. not 90 deg. Ask old Ron how many flat motors he has done over .060" there are hundreds out there still running.
Ronnie
