eniac

Do you own a 911 or something?

Again this isn't my calculation, just what was recommended many times over. You don't have to be a jerk about it, just post something more useful if my post wasn't good enough. ....nah ya know this doesn't even deserve a response....just Wow! is all I have to say.

A.Wayne

My apologies , I never said it was your calculations, i was merely attempting to show the inadequacies of the formula you presented and mistook your popinjay response as being on the offense, as your comments Well he's not building one of "these" and this You could also account for altitude change, global warming, people starving in Africa, and men horny in Canada or this if you have any common sense at all. as a" tempered " response

my apologies if not so .... by the way would you happen to have any grey poupon ?

m42racer

That formula you have choosen is about as accurate as a lucky guess, It does not account for RPM
500 bhp at 9000 rpm requires bigger injectors than 500 bhp @ 6000 rpm

Why does this not sound correct????

m42racer

Patrick,

If you want to know what you will need email Neil. he will tell you in a heartbeat. At least you know that information will be correct.

A.Wayne

LOL,
Swing on in Mr M42 Spacer.......
When you do get beyond 500 bhp you will become more focused and the little raindrops will make more sense..

333pg333

Ooh Kay?? I think the healing process is starting to take effect. Class, can't you just taste that warm and fuzzy to atmos feeling that is flowing around here? Hahah. Anyway this is more as an education for me. I can just email Neil and get the correct answer as M42 says (despite AW's obvious admiration lol). Although I don't like to bother the busy man with my every pesky question.
As for staggered injectors, I haven't even considered this as this build is only for an interim motor that will potter around on approx. 500hp. We might do the E85 at a later date in which case we will need to uprate the fuel pump/s and possibly the injectors? as we will need to use 30% more fuel. It wouldn't be too hard to build this for over 600hp but that's not the object either. Not on this one anyway.

NZ951

Screw the forumla, put them on an analyser, flow them, then at a certain pressure and at a certain duty cycle you get a certain amount of fuel pumped through. I have seen stock Toyota injectors supposed to be rated at by the factory 215cc flow 275cc. I also think popular injector to power conversion rates really underestimate capacity.

NZ951

If your goal is 500HP, 83lb injectors will EASILY achieve this.

333pg333

Ok, but then you are basically going to be running at whatever limitations that particular inj has. So at eg 80% d/c these might flow 'x' then coupled with whatever else is in the engine, this will determine the hp/tq outcome? Conversely if we put all the stuff (components) in a pile can we figure out the potential of this engine at a certain psi level? My tiny brain starts to go around in ever decreasing circles about now.
^^EDIT^^ Ok thanks Andrew that about says it all.

333pg333

Andrew, I've sent you an email through Rennlist as your PM's are full up.

NZ951

yeah I have like a thousand PM's in my box and cant be assed deleting them. Refer my avatar for directions Replied to your email...

333pg333

Just nuke the lot and start again.
I'm not sure where your email reply will turn up? I've not used the Rennlist email system much if ever. You can get me on my normal email which you still may have. pgarvan@bigpond.net.au

333pg333

Reply sent.

Duke

Imagine the engine spinning at 180000 rpm... do you still think that there is enough time frame for 1 injector to stay open say 8 ms?

reyk

HaHa,

Thanks A. Wayne for catching that 6000 RPM is ~ 20 ms

If I could divide, I'd be dangerous...

Reyk