Calculating my fuel flow- working out water inj jet size

[StavFC]

Oh dear :rollin
 

Ah, yes, the most opinionated, rude, abrupt and know-it all person ever to log on any forum ever, (no, I don\'t mean Prof! ) and the reason I stopped buying Redline magazine cos I couldn\'t stomach reading his pretentious invective every month. Maybe we could take his attitude more seriously if he hadn\'t publically taken apart every single "project" car he\'s ever had in the quest for building a "drift monster" and then utterly failed to ever put it back together and finally quietly sold it on as parts and moved on to murdering the next perfectly good performance car?

What cars are they then?
 
The 200bhp stripped out R5GTT I built from a stock wreck and did countless miles in?
 
A 400bhp caged up antilagged 3door Cossie I built from standard, owned for 3 years and did just over 30,000miles in?
 
An almost stock 500quid S13 I drifted for ages (about 1yr solid on the road and did 100miles a day in), then took apart to build something better spec out of, realised the sills were hugely rusty and knackered, so broke it and made a profit in parts?
 
A cheap Skyline GTR I built from one with a blown engine and body damage and no keys (yes, an undrivable wreck), that I was just building a normal 3litre big power road car out of, but then what I always wanted (the Chaser) came along, so I decided to get away from the horrendous Skyline tax and nobbed it off for something I do like?
 
The Chaser I bought, drove and drifted for over a year (done just under 15k miles since I bought it) before taking it off the road as someone offered me almost what I paid for the car for the engine and box alone, and I still own?
 
Or some other imaginary car?
 
Never let FACTS get in the way of idiots talking utter turd about stuff they know nothing about on the internet eh :WaveBye :Typing
 
 
 
Blitz- Aquamist, though that doesnt matter for my specific question (which nobody has been able to tell me?!), and I just want it for the same reasons race/rally cars use it, for added safety on top to reduce the chances of det if the charge temps get too high.
I dont want to rely on it for added performance (ie it be mapped so it will det without it), so I wouldnt want be changing the map.
Dont understand peoples obsession with chasing every last 5-10bhp then constantly crying that their engines have shat themselves or are afraid to run much boost as its so close to the det threshold. Safe and reliable suits my meagre wallet far better.

[bnaellis]

I do suck with maths, I wont try and deny that :Laugh:Hammer
 
I am trying to work out a rough jet size for my water injection, and they usually say 10-25% fuel flow, depending on how much you are depending on it.
 
Anyone know the rough fuel flow of a T04E\'d street ported 13B thats meant to have about 350-400bhp? :xconfused:confused::3Confused

Stav,

What size injectors are you running?


rgds

Brian

[StavFC]

To be honest mate, I dont know. But without knowing what duty cycle they are running, and what the fuel pressure is (i have got that gauge, but cant remember off hand as it wont help for this without duty cycle anyhow), that wont really help anyhow as we wont know how hard they being pushed.
 
I just need to know how much fuel your average 350-400bhp 13B consumes at full howl, and I hoped someone might jus know that as part of their random knowlege or knowlege from tuning theirs.
 
My guestimates from previous experience is 2.4-2.7litres per min, which is close enough to pick a jet size.
But I was kinda hoping others would know just incase my maths was miles out (which is quite often, lol!).
 
Not to worry

[Prof]

As I mentioned before - use the injector calculator - play with the injector values until you get your desired HP figure, then work out your fuel from that.
 
Calc assumes stock fuel pressure, and that\'s what the injector will be rated for anyway - so it makes calculating fuel usage a doddle from there.
 
http://www.rx7.com/cgi-local/2ndgencalc.cgi
 
To get that HP range you\'ll probably need to put in 4x800/850cc or 4x1000cc injectors (keeping it below 85% duty for injector life) - and it\'s likely these are what\'s in the car given the mod list you posted on another thread

[Nik da Greek]

Oh dear :rollin
 

 
What cars are they then?
 
The 200bhp stripped out R5GTT I built from a stock wreck and did countless miles in?
 
A 400bhp caged up antilagged 3door Cossie I built from standard, owned for 3 years and did just over 30,000miles in?
 
An almost stock 500quid S13 I drifted for ages (about 1yr solid on the road and did 100miles a day in), then took apart to build something better spec out of, realised the sills were hugely rusty and knackered, so broke it and made a profit in parts?
 
A cheap Skyline GTR I built from one with a blown engine and body damage and no keys (yes, an undrivable wreck), that I was just building a normal 3litre big power road car out of, but then what I always wanted (the Chaser) came along, so I decided to get away from the horrendous Skyline tax and nobbed it off for something I do like?
 
The Chaser I bought, drove and drifted for over a year (done just under 15k miles since I bought it) before taking it off the road as someone offered me almost what I paid for the car for the engine and box alone, and I still own?
 
Or some other imaginary car?
 
Never let FACTS get in the way of idiots talking utter turd about stuff they know nothing about on the internet eh :WaveBye :Typing

Well, tbh, pal....whatever

I fail to see why you went to all the trouble of typing that lot out to make your point...I\'m curious to know in what way you think the details of those last three cars in any way refute what I said :confused:. By your own admission, the only connecting factor between them is that they sarted out as cars, and ended up as parts, but maybe I\'ve missed the point you were attempting to make?

And as to the closing riposte, well, I do undeniably talk plenty of turd, but at least I\'m capable of mustering the humility to admit it. I can be accused of being many things, but not really an idiot, not with any degree of accuracy. I try to steer clear of waltzing into a forum and insulting the intelligence of long-standing members, particularly ones who evidently know more about the subject in question than I do, because I\'ve no burning desire to make myself look ridiculous. Fortunately, I can\'t bring myself to get too upset about being patronised by someone who is supposed to make their living from writing English, but is capable of using words such as "guesstimate" with no apparent sense of irony :rollin

Right, I\'ll let you get back to your thread so you can say "I\'ve no idea about the parameters affecting the question I\'ve asked, but that doesn\'t stop me from being obnoxious to people who are attempting to answer my question for me" a few more times. Sorry for all the spam. :Thumbs-up

[StavFC]

:rollin
 
The point was, you\'re talking rubbish about stuff you know nothing about I presume to be the big/clever man on the internet with no worthwile imput to this technical question that has never been answered.
And about the last 3 cars you keep mentioning (despite me owning/building/modding 20+, many between these cars, but as we all can well see, you have no idea about me or my life), what you said/implied at first is rubbish as only two was even remotely drift related, two of them did more miles in my ownership than most would have done in that time, the other one was a non running wreck so couldnt be driven.
And each one of them was sold in bits as im not stupid and wouldnt sell something in one piece when I can make twice as much in parts, especially when im making a profit.
 
And why shouldnt I question replies to my own question that I can see are clearly wrong? Last time I checked how REAL life worked, age, post count, and when you registered on a forum doesnt directly correlate to your brain power or knowlege...
 
But either way, chat all you like, suck off and flame you like, if it makes you feel better about yourself, crack on, its Friday, enjoy yourself if you get off on that kinda thing

[BlitzBoy]

Seems to me you are just arguing just to be clever/right now, and on that note, I give up on this thread, useless with replies like that, ill find out elsewhere somehow.

Stav, I think this above paragraph that has got my fellow members back up, Prof is very clever chap and if you knew what kind of job he does you wouldnt make statements like that above, he is probably the only guy who has managed to get an eManage to work on a FC correctly. So chill out and dont come across as know it all I know everything about performance cars type person.

Back to the topic, as its an Aquamist system , use the 0.7mm jet if just using it for a safety net for 400bhp

[Archbish]

^^^what he said.  Minus the bit about injector sizes, as I don\'t know the answer to that one.  But I do know that Prof knows more about this stuff than most of us (including you possibly, Stav?).

[Archbish]

The point was ...  blah blah ... you get off on that kinda thing

Rein in the claws, chief.  Not sure what you\'re trying to achieve with your tone on all your posts above...  But I\'m pretty sure you aren\'t heading toward an answer.  Try using the search facility on here or Ausrotary maybe first?

[Prof]

...to this technical question that has never been answered.

As I mentioned before - use the injector calculator - play with the injector values until you get your desired HP figure, then work out your fuel from that.
 
Calc assumes stock fuel pressure, and that\'s what the injector will be rated for anyway - so it makes calculating fuel usage a doddle from there.
 
http://www.rx7.com/cgi-local/2ndgencalc.cgi
 
To get that HP range you\'ll probably need to put in 4x800/850cc or 4x1000cc injectors (keeping it below 85% duty for injector life) - and it\'s likely these are what\'s in the car given the mod list you posted on another thread

Stavros,
 
you\'re answer is here, and I don\'t claim it as my own work, but it\'s what I used as the basis for my tuning as have many many others - you just need to do the last bit of adding up yourself as I do have better things to do - like fix my vac leak.:Tongue1
 
Anyway - I\'m off to get dirty again :WaveBye

[gsb876]

:rollin
 
The point was, you\'re talking rubbish about stuff you know nothing about I presume to be the big/clever man on the internet with no worthwile imput to this technical question that has never been answered.
And about the last 3 cars you keep mentioning (despite me owning/building/modding 20+, many between these cars, but as we all can well see, you have no idea about me or my life), what you said/implied at first is rubbish as only two was even remotely drift related, two of them did more miles in my ownership than most would have done in that time, the other one was a non running wreck so couldnt be driven.
And each one of them was sold in bits as im not stupid and wouldnt sell something in one piece when I can make twice as much in parts, especially when im making a profit.
 
And why shouldnt I question replies to my own question that I can see are clearly wrong? Last time I checked how REAL life worked, age, post count, and when you registered on a forum doesnt directly correlate to your brain power or knowlege...
 
But either way, chat all you like, suck off and flame you like, if it makes you feel better about yourself, crack on, its Friday, enjoy yourself if you get off on that kinda thing

Stav,

Please respect other users on this forum as you are a guest on MRC, people have tried to help you only to be abused this will not be tolerated if it continues.

By all means use the forum but be respectful and mindful of other users.

thankyou.

[StavFC]

Back to the topic, as its an Aquamist system , use the 0.7mm jet if just using it for a safety net for 400bhp

Lol! EXACTLY what my 2.4-2.7 litres per minute of fuel calculations for 350-400bhp on a rotary running at full howl, referenced to the 10% water flow, referenced to the aquamist jet size flow charts, suggested I should use.
So I was right after all, my maths was better than I thought! :wave
 
Wish your reply was the first reply on this thread, wouldve just confirmed what I thought I already worked out (which is all I asked at the start, someone confirm what I thought I had already worked out!), and this thread wouldnt have been wasted with a couple of pages of rubbish :rollin
 
Cheers mate, appreciated :Thumbsup!
 
 
Prof- I appreciate you trying to help, but I dont see how that link can help? It tells me what power I can get from what injectors at what duty cycle, but doesnt show the ONLY thing I need to know, how much fuel is flowing! And as I said a few times, as I dont know what size injectors it is or what duty they are anyhow, not like it matters for the question I was asking.
 

Stav,
 
Please respect other users on this forum as you are a guest on MRC, people have tried to help you only to be abused this will not be tolerated if it continues.
 
By all means use the forum but be respectful and mindful of other users.
 
thankyou.

I think you will find I was just replying to pathetic digs, forum warrioring, whatever you want to call it, by one of your "established" members, nick da greek (i thought that was my dads name, but live and learn:rollin), and I doubt being an established member gives you that right and gives the person on the recieving end no right to reply just because he is a \'noob\'...

[peterwolds]

stav the way you are getting peoples backs up is unacceptable from a member let alone a guest as you are,the moderating team doesnt differentiate when it comes to problem postings both are dealt with the same.
Prof has masses of rotary knowledge and should be treated with respect he has tried to help and doesnt deserve your comments.
please refrain from contenscious postings.

[StavFC]

Hang on hang on, what have I said to Prof? I havent abused him, though one of your lot did to me?
I appreciate people trying to help, and all I said was the things I was being told was of no use to me or was wrong, as they didnt help me with what I was asking (not even that link), which is simple fact to anyone who understands what I was asking, like it or not.
 
And one of your members did a really poor attempt to give me some internet abuse, and failed.
 
So why am I the bad guy? :wave:Nono!
 
 
Thankfully BlitzBoy confirmed what thought I already thought I knew, which was my sole question from the start, and im very thankful for that :Thumbsup!
 
And on that note, im off out.

[Nik da Greek]

Hang on hang on, what have I said to Prof? I havent abused him, though one of your lot did to me?
I appreciate people trying to help, and all I said was the things I was being told was of no use to me or was wrong, as they didnt help me with what I was asking (not even that link), which is simple fact to anyone who understands what I was asking, like it or not.
 
And one of your members did a really poor attempt to give me some internet abuse, and failed.
 
So why am I the bad guy? :wave:Nono!
 
 
Thankfully BlitzBoy confirmed what thought I already thought I knew, which was my sole question from the start, and im very thankful for that :Thumbsup!
 
And on that note, im off out.

Put simply, you\'re the bad guy because your attitude stinks.

I have 5000 posts on this forum and have never exchanged any hostile word with anyone before, nor had a single post reported. I have better things to do than be an internet warrior, as you so coarsely put it. The way you talk to people is unacceptable, you aim to ridicule at every opportunity, and I was standing up for Prof who was in no way deserving of your snide remarks, but is far too much of a gentleman to bite back.

I am also not "one of" anyones "lot", but a free-thinking individual with the ability to form my own opinions. You\'re ignorant and offensive, perhaps it was a mistake of mine to attempt to be so civil.

I will not be posting further on the subject because this forum is not a place I want to reduce to the level of name-calling. Any mod who feels my words have been in any way unwarranted or unjustified, please feel free to delete any or all with impunity.

I do think you\'re badly wrong on one thing, however....it was not a "really poor attempt" to give you some abuse, you just clearly didn\'t understand it. Try re-reading it slowly and see if you get it second time...