Does a b16 or even a b17 crank fit in a b20 block? I want to destroke my bored over b20vtec. If it does not fit can you explain why?

Is there a company that could make me a custom destroked crank for a b20?

Yes I have searched.. could not find any answers.

 

The crank will bolt right in.You will need a custom length rod because of the shorter stroke and taller block.Unless you are restricted by some rules there really isn't any advantage to destoking a Honda engine.But hey,it's your money.