I'm sure the guy told me that mine were the same as RX7. They are the later model type (94 on) and have a different electrical connector. They do require machining of plenum and new (94 on) fuel rails. That is... if they are the ones ur talking about. Clear as mud, I know
Yes u can fit 13bt top feed injectors you will need to fabricate a custom fuel rail and it will need to sit above the plenum. With you fabricating the rails your self, getting the injectors cleaned, finding a set of 13bt that are a least less then $50 each, injector electrical connector, you would have only saved a few hundred from a set of well priced nismo 555s. Which is exactly why i abandoned the idea, if you do want to go a head, run a search and you'll probably find a couple of posts i made with handy part numbers, colour & which model rx7 to get them from.
Depending on the series, I am running series V injectors (555cc) and they are top feed. If you want to use these then you will need to machine the manifold, and have a custom fuel rail made. Note that I had my fuel rail made through EFI hardware in Melbourne, nice job. But means that you can't fit your throttle cable cover with it as the rails run over the top of the plenium.
rx7 s2,4,5, i used to own one. series2 turbo 800cc, s4 turbo 450cc, series 5 turbo 550cc but series two only had 2 inj. on a motor thats why they r so big. s2t should be about $140 a pair
