The real basics

[Bruce]

If you stack up the tolerances in a carb., it doubt you'll be anywhere
within 3%.  Toss in cylinder variancnes, and it's out the window.  the EFI
ignores any pulsation differences for cylinder to cylinder diferences, so
I'd indorse the EFI is better then the carb in all situations for balance.
Bruce



From: "David & Cheryl Haggard" <david at newcovenant.com>
>    In my mind, the problem with a dual-plane manifold with TBI is mixture
> balance. The two injectors MUST be matched in flow to withing 1%, or half
> the cylinders will run richer than the other half. With a carb, the
mixture
> is very well balanced. Not so with TBI.
> Dave Haggard

> > Of Eric Deslauriers
> > Subject: Re: The real basics
> > Bruce,
> > What, in your esteemed estimation would be one (or several)
> > "well thought out
> > manifolds" for TBI?
> > What are the downsides to something like a dual plane
> > Performer? I've had good
> > perf with them on carb'd SBs, but TBI is it's own thing. :-)
> > TIA!! (and thanks for the note, it's going into my binder
> > with the other stuff!)
> > Eric D
> > 88 K30 Blazer
> > > <snip>
> > > TBI, you want to use a well thought out manifold. Single
> > plane is best.
> > > You need to run some controlled amount of manifold heat,
> > for High RPM
> > > useage, since you lose the atomization advantage there. No
> > real need in
> > > trying to run a TBI off of a TPI ecm, BTDT. You want the
> > faster pulsing
> > > rates to help with the atomization.
> >
> > <snip>


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