Jump to content
SAU Community

Recommended Posts

Hello,

I am about to buy some new injectors for my GTR and its said to use a dropping resistor to fit them. Anyone know what that is? I also found out from this site (down between the second and third 'quote') that its something to do with Pulse Width Modulation!

The Nissan part number is 22698-05U10. If I need one, hopefully they aren't too expensive.

Link to comment
https://www.sau.com.au/forums/topic/126580-dropping-resistor/
Share on other sites

  • 3 weeks later...

GTR has a dropping resistor standard as injects low impedance.

3 to 4 ohms I think standard.

GTS has no dropping res as using high impedence Inj 12 to 13 ohms standard, but if you fit GTR inj you need to add the dropping res to GTS also.

Hope that makes some sense.... :)

TurboX is 100% correct all GTRs receive the ballast resistor from factory. This resistor is installed to protect the ECUs injector drivers, as they are actually designed for a high impedance injector setup.

You only require one if you have an RB20 and are upgrading to GTR injectors, factory or aftermarket.

Just as a side not I have two sets of fully serviced GTR direct replacement injector sets currently for sale; 550cc and 660cc, both Denso. Details can be found here.

ok, so I don't need one

cheers

:)

BTW, I have NISMO 600CC Injectors to fit. Just checked your link and the 550CC's are a purple top, can someone confirm that NISMO 600CC injecotrs are also purple top, because thats what I have....

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

    • Is anyone running these axles? R32, R33, R34 GTR front Axles. shafts itself rated 950hp. Suit all RB26 engines Croydon, Melbourne, Victoria Would be nice to pay half the cost of Driveshaft Shop Axles. I'm building an AWD S13 Coupe that is very low ride height (high cv angle) compared to stock R32. Has an RB30 with appx 600whp. Just looking for feedback. Thanks, Josh- https://www.instagram.com/feng_shui_garage/
    • Been a long time since r31 got some love, my brother dropped a shitbox ls1 crapadore in my lap to fix up.  Put a wiper motor in as the flooded one was no longer alive.  got windscreen wipers now. Time to clean respray and install back in the titanic  IMG_0505.mov
    • Nah its a server spammer thing  Although, now that I manually approve all the accounts I can probably loosen up some of the restrictions.  
    • Thread bump, again! Although, no bad news this time. Posting for the sake of possible root cause. Basically, I rebuilt it (mostly stock), installed Haltech + sensors, had it running fine on new ECU.  Still not really understanding why it cracked pistons last time. Got to tuners, and while checking timing, noticed +-10deg of timing scatter while revving. Changed CAS, and it was rock solid. While not definitive, can't imagine seeing 20+ psi with that amount of scatter would be a good thing. Also glad I found something.   Bit more of a run down; Carried out a stock rebuild, a set of stock pistons, out of a spare bottom end. Everything stock apart from head studs and oil restrictors. (so I can pretend I didn't let the Nissan out, ha.) Armed with the measuring gear and FSM, set about doing overhaul. Oil restrictors as per oil control thread for a RB25, stock oil pump, drifting. Head drain/vent from rear of head, to passenger side of sump above oil level. Two dash 10 vent lines from drivers side of sump (unused atm) Hi octane style cam cover breather kit Splash covers over last 2 cam caps. Both breather lines from cam covers to vented to atmosphere catch can, not plumbed back into sump (wanted to see what it was actually breathing). Got it run in (did about a 1000km) no to low boost scenario, As I had questions over old ECU setup. Installed haltech +sensors for flex Retune on E85 (finding CAS Issue along the way), made 300rwkw at 20psi, out of wastegate. Did a drift day the next day (yes, it was a big weekend!) and was checking catch can throughout the day, ZERO blowby. I mean nothing. Lines from cam covers are not even wet. Done a bunch of street driving, spirited and catch can is still dry. Early days I guess, but pretty happy so far. Also now run 10w60, up from the 10w40 that I used to run. Oil pressure is significantly better, especially when hot (as you would expect)      
×
×
  • Create New...