hey guys, just some information for you if you are intertested...
i have upgraded my injectors to NISMO 555cc. in the process i reused the old seals....silly idea
unfortuently nismo dont supply new seals which is a bit shithouse if you ask me...anyway
there is a seal kit you can get from repco that is made by aca injector tech http://www.aca-auto.com.au/
IRK178 is the part no. you are looking for...$22 from repco...
however my problem was it was a sunday, i had fuel pissing in cylinder 3 and i wanted it fixed NOW!!!!
so i found out that repco had part number S5000 from the same company in stock...little green o-rings perfect for the lower seals in my RB25DET (as these were the ones leaking)
now its a much tighter fit but i just sprayed WD40 in the fuel rail and on the o-rings (i used the old top rings as they dont take much stress)
i used the caps to slowly press the injectors in...
One other major sugestion for injector upgrades is to use the Champion M5 16mm long bolts with hex heads...the reason is the shitty phillips head screws that are stock on the injector rail, they are so easy to strip the heads out of... i used new stainless steel spring washers too...much better solution long term...
so now finally my horrible idle and back fireing is fixed...cylinder 3 is running just fine and my car has extra power....!!!
they way it should be...
if you have questions please ask...