just got my b18b block and im gonna start tearing it down soon. but i needa know if anyone knows off hand the bolt size and pattern for it. and another dumb noob question, does anyone know the bore size of the b18b. i heard its 81.5mm. any truth to this?

 

81mm is stock bore,the bolt patterns are the same as other b series.Although I don't know which pattern you are referring to.

 

im talking about the bolts around the flywheel to hang the motor on a engine stand.