I was just wondering what the exact bore size is for my b16a. I'm about to buy some arias pistons that will lower my compression to 8.9:1,but their size is 3.195. Just wondering if i got to bore my motor so that they will fit.....thanx!

 

The only way to find out the EXACT bore size of your B16A is to actually measure it with a micrometer. Because EXACT bore size varies from motor to motor. And even knowing the exact bore diameter is not really important since you ALWAYS rebore your engine when you get new pistons. It is only important that your bore diameter is SMALLER than available pistons so that your engine can be bored to accept them.