how do you tell the jdm b16a from the usdm?

 

the jdm b16a will only say b16a on the block. The usdm one will say b16a2 if its from a del sol vtec (it will have a hydro tranny) or b16a3 if its from an Civic Si (also hydro tranny) JDM motors always have no number after the second letter.

 

JDM would just say B16A
USDM would have a number afer the A (B16A1-B16A2 etc.)

EDIT: yeah what he said^