Accel injectors, now injector matching

ECMnut at aol.com ECMnut at aol.com
Sun Jan 7 15:28:41 GMT 2001


I think about this way too much, but a big strokey 500+ inch
  street engine that never revs past 4,000 RPM could get
by with smaller injectors than say, a 350 that pulls to 8,000 rpm.
That 3rd demension of intector size (time) is often overlooked.
Toy-Supra single turbo engines have 40lb injector (w/.5L's per cylinder)
while the 4.3 GMC trbo six has 30lb injectors (.72L per cylinder)..
The GMC is programmed to shift at 4,000rpm under WOT.
Not sure how much high the Supra revs, but it has 30% less
engine diplacement, and 33% more intector capacity.
Just food for though.
Mike V

> 
>  Lets see, Duty cycle of 80%, intake valve open about 25%,  of the time, the
>  fuel mostly is being blown on a closed valve, given those stats you really
>  think the atomization is much of a deal?.
>  
>  It's alot more about HP, and torque then engine size
>  19s will support about 300 HP.
>  Your results will vary
>  Bruce
>  
>  
>  
>  > I, too, have heard that a 350 can get away with 19#'ers at a
>  > higher-than-stock pressure.  It has been said that, all things equal,
>  > you'll run better that way because of better fuel atomization.
>  >
>  > Anyone care to confirm/deny this?  Any of you guys running a 350 with 19#
>  > injectors?
>  >
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