b3ne

Can anyone answer these two question? I've got two block b16a + b18a1, I want to have a stroke motor but dont know which one to stroke. First, I know a b16 can use a 89mm stroke but what lenght rods do I need, and whats the redline. Second, I've a 92mm stroke crank balance and lighten what would be the length of rods if I were to run it in my b18a1 block, and can I use any stock honda pistons.