rb26 injectors in rb25

[handyandy]

can i use 550cc rb 26 gtr injectors in my r33 gts-t. if so is there much work in getting them in?

[cameron]

Yes but you will have to change you'r fuel rail and get a resistor pack becuase the GTR injectors are top feed low impedence and RB25 injectors are high impedence side swimmers.

So GTR injectors are not a direct replacement for the RB25 with stock ecu. You'll have to get Side Feed High Impedence for direct replacement.

You canr't run low impedence injectors with the apexi power fc for RB25 GTST - If you runing one of these.

You can pick up a set of Sard 550cc for around $1000 delivered from Japan.

In the end you would have spent more money then just buying a set of brand new sidefeed's from japan.

Jun

[BHDave]

Is there an off the shelf fuel rail to suit the gtr style top feed injectors into the r33 rb25? Just wondering as this will be a dilema i will face in the next few weeks.

Dont forget the injector plugs would need changing too.

[Cubes]

It appears SARD injectors are not the best for economy. Atomisation.

Either you spend the $$ on an expensive set of nismo/hks etc that use 2-4pintles instead of one big pintle or you put up with the high fuel consumption from sards.

Resistor packs from Nissan can be picked up for $160. $300 for the GTR injectors and thats $460. + cleaning at ~$20 each thats another $100 so all up you will be looking at around $560 to get GTR injectors in your car providing you do the work of fitting them.

I'm still looking in to the Nismo/hks injectors to find out if they really do provide better fuel economy.

Everything suggests so as they atomise better due to the multiple smaller pintles but the problem is no one really has these injectors with a closed loop mode ecu.