well when i had this block shipped it seems that it got damaged by ups or something but the o rings were extremly uneven...we tryed to still install the headgasket and put on the head..after we did this we performed a leak down test but cylinder number 2 and 3 are leaking.Obviously its due to the o ring and now i need to replace them..does ne body know what gage they are..i know 18 is to big so im guessing its 20 but am wondering if ne one here know..thank you
ps:there aebs sleeves 84 mm

 

THANKS GUYS