Accel injectors, now injector matching

timsiford at hushmail.com timsiford at hushmail.com
Sun Jan 7 16:57:21 GMT 2001


Amen.  That's what I've been preaching for some time now.

Tim


At Sun, 7 Jan 2001 10:28:41 EST, ECMnut at aol.com wrote:

>
>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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