Pic 1: Injectors galore!!!
Injectors are what feeds the engine with fuel. I've had in many instances just sat there thinking to myself do I really need bigger cc injectors for my ER34 project. I have a general idea of what I want to do with the RB25DET but the injectors are something I can't really decide and put my finger on.
The stock ER34 injectors have a volumetric flow rate of 370cc/min. That would means that it will flow fuel at 35.2lb/hour.
Assuming if one targets 420bhp out of the engine, looking at 0.5 Brake Specific Fuel Consumption (BSFC) and a maximum injector duty cycle of 98%, one would require injectors that flows 35.7lb/hr or 375cc/min.
That means that the stock injectors will only support 420bhp up to a safe level. Running 100% injector duty cycle is of course possible but will only support minute bhp gain, thus it would not be worth the risk.
Ideally I would love to have slightly bigger injectors to be on the safe side, perhaps a minimum of 440cc injectors whereby I can run at 90% injector duty cycle and it'll be extremely safe. OR I can go for even higher cc just in-case I struck Toto/4D and can splurge on the car. LOL :)
Btw, SARD only makes 650cc and 800cc top feed high impedance injectors for the ER34. Just in-case, you know .... you got itchy hands like me.
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well maybe 410bhp would good for what injector you have now.. LoL
ReplyDeletebut remember that when you upgrade your injector means you would have a new fuel pump as well ;)
420bhp means it is about 300whp? what i got is all stock and it is producing about 300 to 310whp...
so bro.. you need to get higher then that go for 480bhp LoL
Sakakida
Sakakida, I have a SARD fuel pump lying around at home. :P
ReplyDeleteAssuming a 20% drivetrain loss that would be about 340whp.
480bhp? Whoa, I am not about to mess with the internals purely because I don't have the funds to do it. :(
assuming u will not be running the full 420hp all the time. i think the stock injector will do the job just fine. my 2 sen la..
ReplyDeleteZul, you're right mate. I reckon too. Unless higher bhp is desired that is.
ReplyDeleteRB25 love <3
ReplyDeletexD
i thought it was 30% :) well decided which injector to use? i know you won't run away without touching the injector..
ReplyDeletesakakida
Looking at the state of my piggy bank, looks like the injectors are one thing I had to pass. ECU is of a bigger priority. :)
ReplyDeleteagree with you man, your hardware is only as good as your software.
ReplyDeletespending on the ECU will definitely give you a bigger bang for your dollar.
i too have a set of 445cc injectors lying in the tuner's warehouse collecting dust, sigh :(
Wow, so colourful! Nice one. Btw EJ, u got fren driving NSX? Me driving one, maybe can share some knowledge.
ReplyDeleteCCC, time to wipe the dust off those injectors man. :)
ReplyDeleteSteven, actually I do have a friend with a NSX. He got it new when it was launched. But unfortunately he just sold it a couple of months back. Got a good offer for it as it's practically like new. Hardly driven at all.
Where are you located btw? E-mail me.