[Diy_efi] injector advance

[Gary]

----- Original Message ----- 
From: "Adam Wade" <espresso_doppio at yahoo.com>
To: "A list for Do-It-Yourself EFI" <diy_efi at diy-efi.org>
Sent: Saturday, August 07, 2004 4:52 PM
Subject: Re: [Diy_efi] injector advance


> --- Gary <gas- at charter.net> wrote:
> 
> > In reality, it is directed on the port wall or
> > floor.
> 
> Yet intake wall wetting is much less of a factor in
> injected engines than carbureted.
> 
Agreed!
>
> This one you got completely wrong.  And if you don't
> agree, you can argue with Russ Collins of RC
> Engineering, who only does fuel injection as his
> entire business, as he (and a number of Tier 1 OE
> suppliers' engineers) confirm that, yes, port
> injection shoots for the back of the intake valve(s),
> and specifically AVOIDS the walls of the intake tract.
> 
Huh?  Don't be twisting my words.  I didn't ever state that 
was not their intent.  It is great they are shooting at the 
target, however, their aim is a little off in most previous 
engines port injection has not been used on.  If the 'aim' 
of some motorcycle engineers is better, :shrug: so be it.  
I don't have to argue with anyone, and prefere not to.  I'm 
confident RC know what he is talking about.  You apparently 
weren't listening very well at the time, that all.  :)  It doesn't
take an engineering degree, to grasp this, just someone that 
can see straight.  
> 
> I am sure I don't have to mention to you, with your
> engineering background, how the space between misfire
> and detonation becomes razor-thin when dealing with
> fuel puddling in the intake...
> 
Razor thin, or just thinner.
>
>   (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

_______________________________________________
diy_efi mailing list
diy_efi at diy-efi.org
http://lists.diy-efi.org/mailman/listinfo/diy_efi