i am building my boosted b16 and i want to bore and sleeve it i was just wondering what bore i should go with?? i was thinking 83mm?? that gives me some room to bore if something were to happen which probabaly wont

 

Why are you trying to sleeve it? You're building it but you don't even know what sized pistons to run? Do you know what horsepower you're shooting for? Absolutely no info to go on here to give any informed advice. Maybe post in the Forced induction forum.
https://honda-tech.com/forums/forced-induction-16/
And read this first.
https://honda-tech.com/forums/forced-induction-16/%2A%2A%2Aforced-induction-forum-faq%2A%2A%2A-1024174/