I've searched, and came up with nothing. Can FD Injectors fit in the FC fuel rail? I've been searching for seconday injectors for my FC once I get my stage 4, and I was thinking of putting 1300cc FD injectors from rx7store.net in. Of course these require that I get 2 850cc injectors first, but that's not a problem. Or would I be just as well off just getting the 850s and running on them? BTW, I plan on 15+ psi once my rebuild is broken in and I get the Stage 4 on.

 

as far as i know...FD injectors are side feed..while FCs are top feed.....of course u can customize them so they fit...but most ppl dont bother.....

 

no, they are side feed injectors, they will not work. I'd go for 4-greddy 720's, you don't need to make any new fuel rails. Their about $270 a set.

 

how are u controlling the injectors.?....stand alone?...if so...just get those monsterous 1600ccs....

 

Well, i'm going to be using an Rtek 1.7 in link with an SAFC2. Later on, I'll be going with a stand alone. But for now, I've not got the cash to get one.

Would I be able to work 15psi on a stage 4 with 4 720s? I figured I would have to upgrade them a little further than that...

 

yeah...u should just wait for the rtek2.0 to come out then....1.7 only controls 550/720 while 2.0 can adjust between 2x 720 or 4x 720.....1600cc is cheaper than 720 if u look around......

 

The only 1600cc injectors I can find are bosch, and I don't know how to trim them down to make them fit.

There is a fuel rail on rx7store.net that says it can hold 1600cc injectors. Has anyone seen this? Does anyone know if it will hold the bosch injectors?

 

I'm going with 1000cc injectors and they fit into the stock rail fine from what I've been told.

 

What brand are the 1000s?

 

PTE (precision turbo engines)

 

So 2 720's and 2 1000's. Do you guys think that would be plenty for the application?

 

My tuner recommends keeping the primaries stock and 720cc secondaries are enough for 300whp safely. How much hp are you pushing for and what fuel management are you using? If I were you I'd ask whoever is going to be tuning your car to give you some advice. Each tuner has their own preferences.

 

Well, I'll have the BNR Stage 4 (350-370 rwhp @ or below 15psi according to BNR), using the rtek and SAFC2 as fuel management for the moment. Until I upgrade my turbo above and beyond the stage 4, I won't get a stand alone unless 100% necessary. I know that having a stand alone means I would be able to pull more power out of the car, but I just plain can't afford one. So odds are that I'll just be tuned using the SAFC2 in connection with the Rtek 1.7.