Barry Grant Fuel Injection?

[Bruce Plecan]

> > But then why are there gas stains (like little rivers) on
> > some manifolds
> > plenum floor?.   Usually not apparent on heated manifolds.
> > Bruce

>    In recent reading in Car Craft, an article was talking about plenum
> designs in manifolds. That article said that the main benefit of a
> spacer under a carb (or a TBI unit) is that it gave the air/fuel more
> time to turn or atomize before it hit the plenum floor. Seemed to say
> that **in many applications** this was more important than the
> increased plenum volume that a spacer creates.

At higher throttle openings yes, at lower ones, the extra *time*, equates to
lower velocities, and can be more prone to falling out of suspension.

>    So the answer to your (rhetorical?) question is that in some
> manifolds, the air/fuel slams into the plenum floor, and in others it
> doesn't.  Gas stains on the plenum floor might indicate a need for
> spacers.

Or that it's just a matter of what is, is.
To quote a famous leader <g>

>    Heated manifolds vaporize the fuel before it can run off like a
> little river, I suppose.

Does, Doc was watching.
Doc was wrong once, cause he forgot his glasses LOL
Bruce

>    Just another theory to throw out...
>
> Dave
>
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