how come u wouldnt want side feed injectors over top feed?

[mmatl16]

i was thinking about putting rb25 injectors in my rb20 but i read that i would need the fuel rail to......also what size are the rb25 injectors and why wouldnt i want side feed?

[gawdzilla]

side feed is less common and more expensive.

[mmatl16]

u wanna be a little more descriptive since i got rb25 fuel injectors and fuel rail for 20 bucks

[Imissmyturbo]

Side feed can run higher duty cly since the coil is surrounded by fuel and that keeps them cooler. Other then that they are exspensive to buy.

[mmatl16]

so should i switch my rb20 injectors for rb25 injectors or what?

[hannibal]

if you need bigger injectors and you have the RB25 lying around, then go for it.

[mmatl16]

if you need bigger injectors and you have the RB25 lying around, then go for it.

thanks i prob will then.

do u know what the cc difference is off the top of ur head

rb20-270 ccrb25-?

[Bluefire]

370cc

[mmatl16]

damn....really? well im def changing them now

[BoostFab]

search on ebay for rx7 high impedance sidefeed injectors....there are plenty of 550cc for cheap....bunch of sr guys are going this route.

[hannibal]

The purple top FD injectors BoostFed mentioned could work too. But you would still need the RB25 rail.

FC turbo injectors are top feed 550cc. But I have a hard time figuring out which are high impedence (I think its the 88-91, TurboII??)

[mmatl16]

so does anyone think i can get em for the same price i got rb25 injectors and the rail?

(20 bucks)

[BoostFab]

i say screw it..stick with the top feed rail....just get yourself a set of high impedance top feed injectors.. and you can always change out the injectors later on without swapping out fuel rail. top feed injectors are cheaper and abundant