JamieP Posted January 31, 2006 Share Posted January 31, 2006 as title what size injectors should a estimated 700bhp car running a t88 have? many thanks jamie:) Quote Link to comment Share on other sites More sharing options...
AshBhp Posted January 31, 2006 Share Posted January 31, 2006 as title what size injectors should a estimated 700bhp car running a t88 have? many thanks jamie:) Is that at wheel or fly Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 31, 2006 Share Posted January 31, 2006 and is that pump or race fuel and road or race boost. Quote Link to comment Share on other sites More sharing options...
JamieP Posted January 31, 2006 Author Share Posted January 31, 2006 and is that pump or race fuel and road or race boost. wouldnt have a clue:) ......the car will be running on optimax and i just want to know what size injectors it should have:) Quote Link to comment Share on other sites More sharing options...
terribleturner Posted January 31, 2006 Share Posted January 31, 2006 How about what it shouldn't have? Like what colour are J-spec injectors. Edited to say J-specs are grey Quote Link to comment Share on other sites More sharing options...
JamieP Posted January 31, 2006 Author Share Posted January 31, 2006 all i need to know is what is the ideal size injector:) Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 31, 2006 Share Posted January 31, 2006 wouldnt have a clue:) ......the car will be running on optimax and i just want to know what size injectors it should have:) It does impact mate. Anyway I would say you are looking at leats 800-850cc. Quote Link to comment Share on other sites More sharing options...
JamieP Posted January 31, 2006 Author Share Posted January 31, 2006 It does impact mate. Anyway I would say you are looking at leats 800-850cc. cheers terry:) Quote Link to comment Share on other sites More sharing options...
LeeT Posted January 31, 2006 Share Posted January 31, 2006 how big is a t88? close to a 71mm turbo? Quote Link to comment Share on other sites More sharing options...
TLicense Posted January 31, 2006 Share Posted January 31, 2006 At 90% Duty cycle, to support 700bhp, with a brake specific fuel consumption of 0.6 (a rating of how much fuel is required to create 1 hp, 0.6 is the norm average for turbocharged cars) you'll need at least 816cc, Since I doubt very much that you'll be able to find 816cc injectors, I'd probably go for some 850's. Similarly, if you would rather go for 80% duty cycle to be on the safe side you'll need slightly larger injectors, 918cc, I don't think 950cc injectors are readily available so you'll need to go for 1000cc. Of course that is 700BHP at the flywheel (well truely speaking in my calcuations is atctually on the piston face, as no allowance for friction or other losses is included) If you want 700BHP at the wheels, then that's a different kettle of fish altogether! Quote Link to comment Share on other sites More sharing options...
SteveR Posted January 31, 2006 Share Posted January 31, 2006 OoooOOOOooooh... pretty maths Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 31, 2006 Share Posted January 31, 2006 At 90% Duty cycle, to support 700bhp, with a brake specific fuel consumption of 0.6 (a rating of how much fuel is required to create 1 hp, 0.6 is the norm average for turbocharged cars) you'll need at least 816cc, Since I doubt very much that you'll be able to find 816cc injectors, I'd probably go for some 850's. Similarly, if you would rather go for 80% duty cycle to be on the safe side you'll need slightly larger injectors, 918cc, I don't think 950cc injectors are readily available so you'll need to go for 1000cc. Of course that is 700BHP at the flywheel (well truely speaking in my calcuations is atctually on the piston face, as no allowance for friction or other losses is included) If you want 700BHP at the wheels, then that's a different kettle of fish altogether! Based on what static Tony Quote Link to comment Share on other sites More sharing options...
TLicense Posted January 31, 2006 Share Posted January 31, 2006 Whatever pressue the injectors are flow tested at. As long as you run that static (and you should) then the injectors will flow the amount stated, hence the need for fuel pressure regualtors to keep the pressure across the injector the same (Didn't we do this before Terry? LOL) and then it's just a calculation of how much horsepower a certain amount of fuel will produce (which is the B.S.F.C. part) Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 31, 2006 Share Posted January 31, 2006 Yeah we did LOL, but you can raise the static mate. Quote Link to comment Share on other sites More sharing options...
TLicense Posted January 31, 2006 Share Posted January 31, 2006 If you raise the static it will flow more, given, but then what's the point of having them flow tested if you do that? I guess just to have them cleaned. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 31, 2006 Share Posted January 31, 2006 and to ensure they are closely matched mate. Quote Link to comment Share on other sites More sharing options...
TLicense Posted January 31, 2006 Share Posted January 31, 2006 O.T. I was reading an article today about a Ford Super 1600 engine built by Mountune, which was running a fuel pressure of 5 bar! (obviously N.A.) I then asked one of engineers what the pressure was on the F1 engine.... take a guess... Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 31, 2006 Share Posted January 31, 2006 150psi??? Quote Link to comment Share on other sites More sharing options...
TLicense Posted January 31, 2006 Share Posted January 31, 2006 Miles off, try adding a shit load.............100BAR!!! Quote Link to comment Share on other sites More sharing options...
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