Re: Gas mileage saga continues (Sorry, QUITE LONG)

["Bruce Plecan" <nacelp@bright.net>]

That is enough cam, that it would be very responsive to intake and exhuast
tract changes.  Also, getting to where starting to get peaky (at least
compared to a stock cam).
Might take an injector constant change, and VE/Timing changes to get things
lined up, properly.
Also, might now be way **under** the curve for operating rpm vs VE.
Bruce

>Well, I responded to this email over the weekend and realized I never saw
it
> hit the list.  I've adjusted my equations for the square root thing and it
> slightly raised the calculated AFRs to between 12.0 and 12.5:1.

> To answer the cam question, the cam is the ZZ3, 208/221 at 050 w/ 0.484
and
> 0.510 lift, 112 lsa.  Not radical at all.
> Steve

> From: Tedscj@aol.com [mailto:Tedscj@aol.com]
> smarteney@xlvision.com writes:
> > 1) 22 lb/hr * 48psi / 43.5psi = 24.3 lb/hr effective injector flow rate
> I think the increase in fuel delivery is the square root of the increase
in
> fuel pressure.
> 1)22 lb/hr*SQR(48psi/43.5psi)=23.1lb/hr
> Also,
> possibility one for decreased MPG:  what's you lobe center on your cam?
> Over
> scavenging maybe? (probably not)
> Possibility two:  Laying into the gas a little more while having fun with
> your new headers? (much more likely!)

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