im kinda confused between a jdm n a non jdm whats the diff n how can u tell if a honda engine its jdm?

Well JDM as you may know, is Japanese Domestic Market, meaning thats where it came from. l think ( l am not too sure about this 1 admittedly) is that JDM cars are right hand drive whereas USDM cars are left hand drive. So the battery & engine would be oriented as such. Least thats the difference l notice when looking at JDM & USDM engines.

Here is your answer. example the american honda civic S l is B16A7 if it is a JDM S l engine then it will read B16A if the last character is a letter then it is a JDM. Another example the japanese Type R engine is B18c5, the JDM one is B18c.