Jump to content
SAU Community

Recommended Posts

I know this topic has been talked about to death but here goes.

I need some injectors, can anyone confirm the size of the standard injectors? Will 550cc injectors be enough for around 400hp? Car R33 - RB25 is currently making 256rwkw but is leaning out at around 17psi.. Its still using the standard pump but a 600hp bosch unit will be fitted when the injectors are put in,

would 680cc be better to be safe ?

Link to comment
https://www.sau.com.au/forums/topic/23043-injectors/
Share on other sites

Yeah, I heard the SARD ones are selling for a good price through Greenline, Nengun etc. Unfortunately sidefeed injectors are in limited sizes, but choose ones which will provide enough fuel for your target hp, so you don't have to change them each time you get more power.

Link to comment
https://www.sau.com.au/forums/topic/23043-injectors/#findComment-493671
Share on other sites

Sard injectors are a bit of messing around to fit. The o-rings supplied are too thin and I had to put my stock ones on. INASNT had to use two o-rings to get a seal. Further you must remove the rubber gromet in the top of the cap, and change the plugs over on the injector harness. The plugs, clips etc are supplied. You will also need collars.

Greenline are selling them for Y12618 each with collars.

Nismo 555cc injectors I have heard are straight fit and sell for Y13254, so about $8AUD difference. I am not absolutely certain that nismo will fit straight in, perhaps someone else can say who has fitted them?

In hindsite, I would definately be getting the nismos if I could do it over, for the sake of saving less than $50.

550 cc injectors should be good for up to 600bhp+, or close to 400rwkw (this is assuming 60kw driveline loss approx).

The only down side to larger injectors is that they can get difficult to tune for part throttle and idle, so be prepared to make some sacrifices if you head in this direction.

Link to comment
https://www.sau.com.au/forums/topic/23043-injectors/#findComment-493887
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...