sorry for jumpin on your s**t. some of cc's users come with some off the wall crap to say. anyway 81mm bore in a B18A1(stock bore, Ls teg motor.)i have the engine back together but for some unforseen financial issues i have not gotten my tubo setup or other goodies listed in my garage. It should be no more than maybe another three months and ill have it all done runnin like 10psi. so far i have ACL race bearings, wiesco forged pistons and Eagle H-beam ESP rods. She is up and running, i just finished the tune up last night (valve lash and a overal detailed inspection.) I am fiending to get her done, but i know you all can relate. I will post more photos as the build continues. laters:-)