Fwd: re: Spica/Webers

["Jason Hagen" <hagen_jason1@domain.elided>]

As an ex-fuel systems engineer at Ford I will add the following points (or 
shall we say "fuel to the fire"!):

1.  I cannot debate the carb vs. fuel injection atomization issue in detail, 
however, levels of atomization are basically a mute point once the car has 
reached operating temperature.

2.  Today's fuel injected vehicles are certainly superior to carbed vehicles 
in performance, emissions, etc. BUT these vehicles are operating on a closed 
loop (feedback) system which continuously refines the delivery of fuel 
(air-fuel ratio).  I am not a Spica expert, but this system is certainly NOT 
a closed loop system (no, not even the high-tech thermostatic actuator would 
qualify!).

3.  The net:  Comparing Spica to Carbs is different than comparing today's 
injection systems to carbs.  Impirical (experimental) data in this case 
would best answer any performance/superiority questions. I do know that Alfa 
went to fuel injection to reduce emissions which tells me that overall 
atomization and maintainance of the desired stochiometric air/fuel ratio is 
maintained more effectively via a well tuned Spica system va. a weber carbed 
system.

- Jason Hagen
'73 Spider
'88 BMW 735i
'98 Land Rover Discovery
'73 MTD Riding Lawn Mower
'01 Ryobi 10HP dual-stage snowblower
'80 Echo weedwacker


> From: Joe Elliott <jee@domain.elided>
> Reply-To: Joe Elliott <jee@domain.elided>
> To: Alfa Romeo Digest <alfa-digest@domain.elided>
> Subject: re: Spica/Webers
> Date: Thu, 21 Nov 2002 12:20:54 -0500
>
> At 1:18 PM +0000 11/21/02, alfa-digest wrote:
> > The atomization from virtually ANY injection system (unless air shrouded
> > injectors or compressed air boosted injectors are used) does not even
> > APPROACH the level of atomization of the fuel which is achieved by Webers.
> >
> > Greg
> Umm, didn't Eric say they did some tests at Ford that indicated otherwise, 
> or am I remembering completely incorrectly?
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