VB- Posted April 8, 2009 Share Posted April 8, 2009 replacing the rb25 head with a rb26 with some nice 270 cams. hoping for around 400-450rwkw with a hks t04z. but wanted to know would 800cc injectors be big enough or should i get the big 1000cc? Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/ Share on other sites More sharing options...
R31Nismoid Posted April 8, 2009 Share Posted April 8, 2009 800cc Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525242 Share on other sites More sharing options...
VB- Posted April 8, 2009 Author Share Posted April 8, 2009 will 800cc give me enough leg room incase the cars in the wrong situation? or pushed hard enough? Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525246 Share on other sites More sharing options...
R31Nismoid Posted April 8, 2009 Share Posted April 8, 2009 well I'm putting in 700's for 400rwkw Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525255 Share on other sites More sharing options...
DCIEVE Posted April 8, 2009 Share Posted April 8, 2009 I'd go 1000's, straight up. Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525261 Share on other sites More sharing options...
Luke_ENR34 Posted April 8, 2009 Share Posted April 8, 2009 Would 1000cc Sards be ok to Run a 26/30 on E85 pushing 400-500kw? Sorry to hijack Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525272 Share on other sites More sharing options...
VB- Posted April 8, 2009 Author Share Posted April 8, 2009 (edited) I'd go 1000's, straight up. i would buddy but theres like a 500bux differnece in price, bitch of a cold start and exhaust idle. =[ Would 1000cc Sards be ok to Run a 26/30 on E85 pushing 400-500kw?Sorry to hijack theyd be fine, only reason im asking is maybe they might be to overkill. Edited April 8, 2009 by VB- Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525285 Share on other sites More sharing options...
R31Nismoid Posted April 8, 2009 Share Posted April 8, 2009 You would need 1000's for E85 without question. 30% more fuel required. Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525286 Share on other sites More sharing options...
DCIEVE Posted April 8, 2009 Share Posted April 8, 2009 i would buddy but theres like a 500bux differnece in price, bitch of a cold start and exhaust idle. =[ I went with 750's and now looking at having to move them on for something bigger - given hindshight I would have saved money if I'd gone 1000's first time around. What ecu are you using to be concerned about injector control? Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525297 Share on other sites More sharing options...
VB- Posted April 8, 2009 Author Share Posted April 8, 2009 I went with 750's and now looking at having to move them on for something bigger - given hindshight I would have saved money if I'd gone 1000's first time around.What ecu are you using to be concerned about injector control? well ive always planned to use the PFC D jetro.......but some have raised the question about Haltech.....problem is i dont think they have a plug and play unit =[ Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4525330 Share on other sites More sharing options...
Al Posted April 9, 2009 Share Posted April 9, 2009 I would go 1000cc, low impedance. Trying to make motor with 1000cc, high impedance, injectors idle would be an absolute prick. The reaction time of a low impedance injector is a lot faster, hence the motor will idle more smoothly, than if you were to use a high impedance injector. Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4526600 Share on other sites More sharing options...
VB- Posted April 10, 2009 Author Share Posted April 10, 2009 i always thought the bigger the injectors the more problems with idle lol Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4527302 Share on other sites More sharing options...
Marko R1 Posted April 14, 2009 Share Posted April 14, 2009 I would go 1000cc, low impedance. Trying to make motor with 1000cc, high impedance, injectors idle would be an absolute prick.The reaction time of a low impedance injector is a lot faster, hence the motor will idle more smoothly, than if you were to use a high impedance injector. im in the same boat, in the sard range there are 2 options: 1. black top/orange tip, lag time 1m/s 2. light blue top/green tip, lag time .85m/s is the 1st injector low impedence you are referring to? Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4532742 Share on other sites More sharing options...
N1GTR Posted April 14, 2009 Share Posted April 14, 2009 Call tuner for info like that Marko Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4532795 Share on other sites More sharing options...
unique1 Posted April 14, 2009 Share Posted April 14, 2009 i run 1000cc sards and bigger cams than mentioned and idle is no problem at all. cold start idle was never the greatest but i aint running the idle air control valve any more and never really cared as it wasnt a daily driver. I had to keep the revs up a touch for 30 secs and then it idled itself fine, dont think this is the injectors fault though. Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4533110 Share on other sites More sharing options...
T04GTR Posted April 14, 2009 Share Posted April 14, 2009 1000's in a 14mm fuel rail. 1600's if you want to run e85. i have 1000's and at 376kw they are on 75-80% cheaper to get 1 set not having to buy smaller ones only to run out of RELIABLE headroom.. 1000's idle perfect, just depends on your tune,, oh and ecu Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4533619 Share on other sites More sharing options...
WHITER33GTS-T Posted April 14, 2009 Share Posted April 14, 2009 Im running 1000s in my 25/30 and have no trouble to idle when cold. But have haltech E11v2 Link to comment https://www.sau.com.au/forums/topic/264769-injector-size-for-400-450rwkw/#findComment-4533657 Share on other sites More sharing options...
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