jspec engine v.s a-spec.
 

i was wondering are there any difrences in the j-spec enigine v.s the a-spec engine. if so what ?..

-thanks

Hehe..
I'll be nice, differences in the actual engine, I'm pretty sure there aren't any major differences. The extra few ponies that the J-spec puts out are from a less restrictive exhaust IIRC. The Jspec however has less emissions related material, the UIM for instance is different on the TII. I'm kinda tired otherwise I would go father in depth.

so i guees the j-spec wont pass smog in california...?

Covered many times before...

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/us-vs-japan-fc3s-490591/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/how-do-you-know-if-you-have-j-spec-13b-505382/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/jspec-usdm-t2-motors-same-479910/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/difference-usdm-s4-tii-motor-vs-jdm-385109/