Sry im a noob here nd I just wanted to know. If I were to buy a 86mm piston what size would I have to bore my block to comply with the proper clearance? :banghead:
Whatever the piston manufacturer specifies. It depends on if the piston is cast or forged and in some cases the intended use. The members of CF don't determine the required clearance. My great concern is that if you have to ask this obvious question, what are you doing boring and engine to begin with?