Can anyone tell me what are other symptoms of a rod knock other than the noise? I am having some major problems with my car. I've been told that it is a rod knock but no one has pulled the engine apart yet, so its all speculation. I have a d16y8 in there right now. If it is a rod knock would anyone recommend having the engine machined and rebult for high performance because I already have a lot of money invested in it, intake, ignition system, pulleys, full exhaust and more? Or would you recommend swapping the motor and going up to a b16, b18 , or H22? i am more concerned with what is going to be better for my money if it would be cheaper to rebuild and throw a turbo on the d16 or get a better engine and go from there. Any info will help.