I read something once before about putting in an older motor into a newer car.
Is there something wrong with doing that, what i want to do is put in a 1990 ls motor into a 91 civic. Is there a problem with that?

 

It varies between states your going to have to check localy...

 

fitament or legality?

 

Oh also some states won't allow you to put a 1.8L into a car that only came with a 1.5L and/or 1.6L but again all has to do with your own state...or if you got a hook up for inspection/emissions

 

legality?

 

well here in cali at least, the engine must be for the same year or newer due to smog.