I just got my exhaust installed today and my racing beat header is rattling on something. I was running just the header only (waiting for mufflers to arrive) and it was not rattling at all. It is coming from where it bolts to the engine. It rattles when you rev the car and the engine moves. I am thinking that when the engine moves, the exhaust is putting stress on the header, it moves it slightly and rattles. Like I said, lt is coming from where the header bolts to the engine.

Does anyone know what it could be rattling on?
thanks

 

are the bolts tight enough?

 

yes, I just installed it and i tightened them really hard.

 

perhaps loose heat shields?

 

I forgot to mension that I dont have any. The rattle dosent really sound like a loose heat shield is hitting it, it sounds louder and "harder".

 

i just went out and checked again. the bolts are tight. one more thing, when the header gets hot it seems to get worse.