what is the difference in power between the turbo ii j spec and the turbo ii american spec??? please help

 

they are the exact same engines. only diff is no EGR and smaller air pump in japan.

 

Actually there are several more differences

Lower Intake manifold has threaded hole for brake booster in J-spec.

UIM does not have AWS mounting holes and, obviously, does not come with the AWS solenoid.

J-spec intercooler has different writing and does not come with the AWS vacuum hose

J-spec adjusts idle with adjustment screw, not BAC

J-spec does not have BAC adjustment screw

J-spec ACV is different, does not have all of the electrical connections

I'm in the middle of converting my Turbo to American spec to pass the state inspection and every thing must be as it was sold in the States. I had installed a J-spec TII engine into my '90 convertible.

DJ

 

which is all emmissions stuff. there is no power or preformance differences

 

You might get lucky and get a JSPEC that is ported, or some other little goody done to it, but as being different, they probably better in the way they are assembled.....no wait probably not, hehe

 

They were all assembled in Japan...

 

lol that would be cool---an rx7 plant in america.... sigh...