rubbing under hard acceleration

[luke2405]

got my new 172 very happy with it but when i floor it in first or second i get a rubbing and knocking noise any idea what this could be ? Thank you (sorry if its been covered before done a search but couldnt find anything)

 

[Brett]

Could be engine mounts. Although people say its usually more of a knocking sound than rubbing.

 

[luke2405]

its more of a rubbing noise than a knock and the engine mounts were changed a few months ago.