Okay so I have this grind noise when my car reaches around 4300-4500 rpm it runs perfectly fine.. The drive sounds normal but when it hits that rpm you hear this grind noise it's not high pitched but it sounds like it's metal on metal.. Could it be that my cams are dirty? My exhaust is hitting the sway bar? My drive belt Is starting to crack and squeak a lil but iono if it could be that.. Oh and it does happen sometimes starting off on 1st but definitely not as loud..

And I don't think it happens when I rev it up in idle.. But I will check!

Any feedback is greatly appreciated thanks!!!!

 

fix the exhaust change the belt go from ther eliminate the known problems. Also if your cams are dirty your oil is dirty no good for bearings. Keep up proper maintnence evos are picky so use the right fluids etc..