Just picked up a 97 GTP w 200k for fairly cheap to swap in my 98 GTP dirt track race car. I noticed it had a knocking sound coming from the passenger side pulley areas and would go away when you revved it up. I assumed it was the sc coupler going bad which i was going to swap sc anyway since mine already has the 3.4 pulley on it. Well i started to diagnose the problem by taking off the sc belt to see if the sound would go away but it didnt. I did notice that the sc pulley does have back and fourth play tho. So i then took off the drive belt to see if it could be any of the pulleys, pumps or ac, the knocking doesnt seem to real appear unil after i let off the throttle. Could this be a sign of KR? Im not sure what octane the previous owner ran but i know the air filter and tube was totally clogged which i already took off. I dont think its a rod bc the thing idles nice, just doesnt have any power when you take it down the street, but it does have full boost. Any suggestions or ideas would be welcome. Thanks
