Difference between JDM b16 and USDM b16

[HondaDriver82]

I now the major differences like compression, hp and OBD differences. And i now that the plugs on the distrubutor and injectors are different, but is there any thing different between the engines, like i'm buying a JDM b16A2 and i'm gonna use a OBD2 engine harness and OBD2 ecu, are there any connections that are on the USDM B16a2 that are not going to be on the JDM b16a2???

[Smokn91HB]

im not fully sure... but i believe that the b16a has 160 USDM and 170 JDM (from what i hear) it must be in the compression or in the head

[jcrx]

It has nothing to do with the motor being from Japan, other than the 92-95 B16A (170ps) running a higher compression, there is no difference between the USDM B16A's and the JDM.

The differences in plugs are from the OBD differences, not regional.

[tomsindahizouse]

what is the difference that makes the jdm b16a 170 HP as opposed to the usdm b16a 160 HP? sorry....i know this is an old thread.

[DBISIS]

Originally Posted by jcrx

It has nothing to do with the motor being from Japan, other than the 92-95 B16A (170ps) running a higher compression, there is no difference between the USDM B16A's and the JDM.

The differences in plugs are from the OBD differences, not regional.

just like he said. higher comp.

[tomsindahizouse]

ok then, if its the exact same...how does it run a higher compression....why cant i just run a higher compression? I know nothing about compression.

[DBISIS]

okay, the difference in the motors internally i beleive is the piston design. The jdm has a higher dome.