Re: [T3] Injector interchangability?

["David V.N." <rmcevoy1@twcny.rr.com>]

Sounds about right

"....the whole world , Chico. And everything in it."

David V. Nelson
1969 Fastback FI (no matter what!)


----- Original Message ----- 
From: "Jim Adney" <jadney@vwtype3.org>
To: <type3@vwtype3.org>
Sent: Friday, December 05, 2003 11:10 PM
Subject: RE: [T3] Injector interchangability?


> On 3 Dec 2003 at 21:51, Dave Moller wrote:
>
> > > From: Jim Adney [mailto:jadney@vwtype3.org]
> > > There's one uncertainly, and that's the fact that this assumes that
the
> > > pressure drop between the IAD and the combustion chamber is linear
with
> > > airflow. I don't know if that's true or not, but even if it's wrong,
the
> > > linear
> > > assumption for small % increases of displacement should be pretty good
> > > approximations.
> >
> > Very roughly speaking, pressure drop in a tube will vary by the square
of
> > the airflow velocity.
>
> Hmmm.... Would this also be the correct relationship between pressure drop
> across the intake venturi and airflow thru it?
>
> If so then we should only increase the fuel pressure by a ratio equal to
the
> square root of (new displacement/old displacement). Have I done that
right?
>
> -- 
> *******************************
> Jim Adney, jadney@vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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