i have a b18c1 block, same as the b16b(which is what im trying to make!)

#1 are the b16a cranks and b16b cranks different, if so how?

#2 what is the max bore i can use with a set of benson sleeves that will be safe up to 500hp? 86mm? bigger?

# how much displacement do you get out of a b16b bored out to whatever you answered in question #2?

 

B16B crank is a lil diff than B16A crank since B16B rods are like B18C rods.

As for bore size 82-83mm is good for FI since the turbo does the pumping and not the pistons alone.

I like to run 82mm and we've had really good success with that.