Accel injectors, now injector matching

Dave Zug dzug at delanet.com
Mon Jan 8 03:37:19 GMT 2001


Exactly!  I left out that my 383 revvs only to 5200, thats how the DC topped
out at only 86% with the 22# ers.

Don't stop thinkin' too much ;-)


----- Original Message -----
From: <ECMnut at aol.com>
To: <gmecm at diy-efi.org>
Sent: Sunday, January 07, 2001 7:28 AM
Subject: Re: Accel injectors, now injector matching


> 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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