So I got b18c1 block with a stock crank, and I just recently got some b18c pistons, rods, and flywheel. So I tried putting on the flywheel, and there was a bearing that was stopping it, so I hit it out and tried again, and this time it fitted on the first part of the crank, but theres a little grove on the crank making it bigger and it wont fit around this part, am I missing something or is there suppose to be a space between the flywheel and the engine block. Thanks.