Injector Duty cycle calculations

[Mike Rolica]

Efi...
Mike Rolica
Plant A,
Magnesium Products Division
Strathroy

(519)-245-4040  Ext. 244



	-----Original Message-----
	From:	Bruce Plecan [SMTP:nacelp at bright.net]
	Sent:	Monday, July 24, 2000 1:05 PM
	To:	gmecm at diy-efi.org
	Subject:	Re: Injector Duty cycle calculations



	> Oh.. this is not on my truck... this is race engines..

	Ya, I got that.

	> My truck was horrible from idle too 3000 where the cam started to
work
	> My bsfc were around .475 from 3000 till 4000 then they started to
climb..
	> and go goofy.. bounce around..

	What for fuel metering were you using on the dyno?.  EFI, Holley,
SU,
	Carter, TBI, Webers, <g> etc?
	Grumpy

	> Mike Rolica
	> Plant A,
	> Magnesium Products Division
	> Strathroy
	>
	> (519)-245-4040  Ext. 244
	>
	>
	>
	> -----Original Message-----
	> From: Bruce Plecan [SMTP:nacelp at bright.net]
	> Sent: Monday, July 24, 2000 12:17 PM
	> To: gmecm at diy-efi.org
	> Subject: Re: Injector Duty cycle calculations
	>
	>
	>
	>
	> > and how wide of range did it run, a
	> > band of a couple hundred rpm or several thousand?.
	> > Usually 5500 to 7500
	>
	> Uhmm, this was with the 165??
	>
	> > Yes and can change in less than an hour... seen where engine was
	> > running  .39.. then set valve lash..
	> > Had storm fron coming in.. next pull it ran .45's.....john playe
	> > with carb.. got it back down to .40~.41...
	>
	> Weather and a relash, and stuff changed that much?. That is toooo
	> cutting
	> edge by a long run for a street motor, and that rate, you could
melt
	> a motor
	> by carrying a passenger, and pulling a long grade.
	>
	> > I agree... seem they have problems with exaust valves:-)... run
	> > really hot...
	>
	> Lean is watching the greenish sparks in the exhuast, and just
	> knowing that's
	> the exhuast valves leaving thru the ports (short primary pipes
	> usually
	> needed to see this).  Say a ----  one time dump sparks thru the
	> mufflers
	> once.  Hehehe, I won, he had a miss afterwards.
	> Grumpy
	>
	>
	>
	>
	>
	>
	>
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