can you use jdm engine without modifing any parts on a usdm car?

[aznpnoyracer]

I have a 91 accord lx and planning on getting a newer engine and automatic tranny. but most of the once I see for sale are jdm but mine is usdm, will I have to change anything or can it be dropped in like the normal usdm engine? and plus will it matter if I have a lx and the motor is from dx or something?

[92Lxsleeper]

im pretty sure dropping in a jdm is the same as a usdm from what i hear, but im not completely sure

[jas_r34]

i don think the trim matters. and the jdm engine i think should fit without any mods

[Dv8]

mine sure didnt. i had to rewire the main harness and a few other adapter clips. why, i do not know. every car is different.

[MadSpleen85]

Should be about the same over all. Might have to rewire a few different things and make sure that when you buy your motor you have the correct motor mounts. Check out the SWAPS section on here. If you are just a noobie you wont be able to post in that section until you have 30 posts but you can PM anyone in the forum with any questions you may have. Later

[cp[mike]]

they are all pretty much the same. the JDM motors are the same as the USDM ones, minus minor differences... for example the fuel line fitting is on the opposite side of the fuel rail on JDM motors. solution is to just swap fuel rails... not many other differences, or at least differences worth worrying about.