Hello, I am buying a built short block this weekend that was built by JG Engine Dynamics. I am going to be mating this engine to a 99 gsr head. My question is if anyone has any idea on what the compresion ratio will be for it. The block is a b18b1 that has been sleeved and bored to a size of 86mm and the deck height has been resurfaced. The block also has closed deck sleeves. The pistons are forged CP racing pistons that are 84.5mm and 12.5 compression ratio. I am going to be putting this in my daily driver DA integra. I will be running chevron supreme at all times. If you have any information about what i am doing or any comments I am all ears. I would like to find out if this is a good or bad idea for a daily driver on 92 octane pump gas. As you can tell i am a noob to the technical aspect of engine building. So please go easy on me. If i am asking a question that has been answered before in a different thread just let me know and i will be happy to read it. I have tried to use the compression ratio calculator but i do not know the piston dome displacement. Ideas on how to get it would be great. i dont have time during the day to call CP pistons so i am not able to get the info from them. I have also tried their website with no luck. Thanks for taking the time to read my post and thank you again if you have a response. Also i forgot to add that the block originally had a b16 head on it afterit was built.