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re: Goofy intake?



I've often thought the exact same thing, but I don't have any firsthand Bosch Spider knowledge to back up the theory. I know that several conical air filter kits are available for these cars, but I don't know whether or not they change the position of the filter & AFM.

At 5:33 AM +0000 2/3/03, alfa-digest wrote:

Date: Sun, 2 Feb 2003 23:32:21 -0500
From: "Paul  Misencik" <[email protected]>
Subject: Goofy intake?

Speaking of throttle response, I was looking at the (stock) intake on my '87
Spider today and got to thinking...

Why did Alfa choose to run the intake hose all the way across the top of the
engine and way over to the airflow meter on the other side of the engine bay?
Was it just for packaging reasons?  I mean, the throttle is on the passeneger
side of the cylinder head, but the airflow meter is hell and gone, all the way
on the other side of the engine.  The intake air has to come all the way
across a hot cylinder head, which I would think would heat it up somewhat,
making it less dense.  Worse, what happens to all that air when I shut the
throttle?  When I'm accelerating, it's drawing air through this huge tube, but
then I lift and the throttle closes, there is a ton of moving air in between
the air flow meter and the throttle itself that just... stops, right?

That seems stupid to me, because then when I get back on the throttle, the
initial burst of intake air has to start moving again from a dead stop, which
seems like it would rob the initial throttle response of the engine.

I know Alfa engineers are smart, so is there some theory at work here that I'm
not understanding?  (It sure wouldn't be the first time.)  Has anyone - even
in a racing application - every tried to change the way this is set up?

Paul Misencik
Huntersville, NC  28078
email: [email protected]
www.paoloroman.com
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