Knock levels

How I know the normal levels in DBs of each engine?, I know that maybe between 36 to 38 Dbs. is normal but maybe for some engines is different.

Hello in our courses we teach how to find this level and apply the correct settings please check this out but also there is a huge number of questions just like this in the forum, if you type knock into the search bar ad take a read through these i will be happy to help you out with further questions on Monday when im back in my office

Regards Ross