When the engine heats up and cools off there is a metal expansion and contraction noise comming from the manifold. What could this be? Is it a problem developing? It is normal for these noises to come from the exhaust, after the engine cools down.

 

Sounds normal to me. Is it kind of a ticking noise?

 

Yes it is a ticking noise/

 

Nothing to worry about then.

 

Thanks.