TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

i seaked and didnt find...

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Old Mar 14, 2007 | 08:48 PM
  #1  
cranknrods's Avatar
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Joined: Aug 2005
Posts: 40
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From: always moving
Car: 92 RS
Engine: 350vortec
Transmission: 700r4
i seaked and didnt find...

ok-ive been searching for the flow numbers of the 305 injectors and i cant find them (i should have it memorized but sometimes my brain does a memory dump without my permision

i wanna play with smaller injector sizes (with higher pressure) on my 350 just to see what happens

what is the formula for calculating flow i.e. 350 61# injectors at 17psi would flow ???

i want to know-at what pressure would i have to run 305 injectors at, inorder to match the flow of my 350 injectors.

after i mess with 305 injectors im then gonna try over pressurizing 4.3 injectors- just for shoots and giggles

so i quess im asking for 305 injector flow at a certain pressure and also the flow formula
thanx
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305 injectors are #55 right? and 4.3 are #45
so now all i need is the formula-still cant find it

Last edited by cranknrods; Mar 14, 2007 at 08:52 PM. Reason: Automerged Doublepost
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Old Mar 14, 2007 | 10:31 PM
  #2  
snflupigus's Avatar
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Joined: Jul 1999
Posts: 2,184
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From: Tempe, AZ
Car: 92 RS, 02 Tacoma, 2 73 Porsche 914s
search harder

https://www.thirdgen.org/forums/tbi/...tor+flow+chart

https://www.thirdgen.org/forums/tbi/...tor+flow+chart

flow calc...

https://www.thirdgen.org/forums/tbi/...ow+calculation

rbob is efi god....
----------
and why are you doing this again.... to me its a waste of time to get you nowhere. shoots and giggles? ok.

Last edited by snflupigus; Mar 14, 2007 at 10:32 PM. Reason: Automerged Doublepost
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Old Mar 14, 2007 | 11:04 PM
  #3  
cranknrods's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2005
Posts: 40
Likes: 0
From: always moving
Car: 92 RS
Engine: 350vortec
Transmission: 700r4
thanks-
well i said shoots and giggles but im gonna see how well i can get the fuel to atomize and then start playing with things-like intake heat and such--kinda got the idea from smokey yunicks (<--spellin?) vapor fiero. not the same consept but still got me thinkin. the whole fun of hot rodin to me isnt knowing that it will or will not work-its doing it and seeing and feeling for myself why it does or doesnt work-then i can tinker with it until i turn blue in the face and then move onto something else. its just what i do...
----------------------
after doing the math 4.3 injectors dont seem to need as high of a pressure to match my 350's as i was hoping.
now to start researching 2.8 injector flow #
2.8 lb/hr??
im not sure if i saw it on this site or one of the others but someone has done this before. im thinking about filling up the water passages in my intake after i get the fuel atomizing really well. colder charge plus no fuel puddling...still tinkering............

Last edited by cranknrods; Mar 14, 2007 at 11:45 PM. Reason: add stuff
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