[Diy_efi] injector advance

[Gary]

While it is true most injectors do not give great atomization,
in more engines than not, the injector does NOT spray fuel at
the back of the valve, (closed or open) as many may believe.
In reality, it is directed on the port wall or floor.  (A good reason
not to polish the intake port, even for port injection.)  Even MY
phrase 'spraying at closed valve' was a bit of a misnomer, or a
little misleading.

This post just to add a little more to the validity of the 'bear
dribble syndrone'.

GAS

----- Original Message ----- 
From: "Gary" <gas- at charter.net>
To: "A list for Do-It-Yourself EFI" <diy_efi at diy-efi.org>
Sent: Friday, August 06, 2004 4:18 PM
Subject: Re: [Diy_efi] injector advance
>
> ----- Original Message ----- 
> From: "Greg Hermann" <bearbvd at mindspring.com>
> To: "A list for Do-It-Yourself EFI" <diy_efi at diy-efi.org>
> Sent: Friday, August 06, 2004 2:11 PM
> Subject: Re: [Diy_efi] injector advance
> >
> > Injecting against the back of the intake valve is a CRUTCH, used
> > to compensate for the fact that most electromagnetic injectors
> > do NOT give good atomization.
> >
> > Use an exhaust grade material (read more expensive) intake valve,
> > and don't worry about cooling it.
>
> The intake doesn't get that hot in the first place, to require exotic
> exhaust valve material, so need for additional cooling is a mute
> point, even for F.I. (forced induction) applications.
>
> But is this practical, or even relevant to the original ? in this and
> referenced archived thread?  If not, I personally consider it engineering
> dribble.
>
> > Greg

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