Just for the record I made with great regularity the following power with
the orginal stock carbs (properly jetted) and standard engine componets I.E
:crank and rods.
1300 Spitfire 127 bhp at 8200
2000 GT-6 187 BHP @ 7800
TR-6 210BHP @6500
----- Original Message -----
From: <EISANDIEGO@aol.com>
To: <wgrosenbach@juno.com>; <mjb@autox.team.net>
Cc: <fot@autox.team.net>
Sent: Wednesday, October 31, 2001 4:44 AM
Subject: Re: Weber Jets
> Excellent point. I remember too little of my training as a
glorified
> plumber (chemical engineer) to offer specifics. Since delivery of chemical
> fluids is a major cost in the design of chemical plants, we were trained
to
> examine this issue in considerable detail. There are actually three long
> complex mathematical equation (mass , energy, and momenteum equations)
that
> were used to size the pumps that addressed everything from fluid viscosity
> and pipe diameter to each type of bend (curve verses 90 degree bend) in
the
> delivery pipe
>
> Most certainly, the gpm values offered by Holly and others is based
on
> a specific set of circumstances. It serves as a relative measure of pump
> performance. What actually happens in individual racecars will vary
depending
> on their "plumbing".
>
> Engineers, particularly civil & sanitary engineers (my other little
> used college technical degree), calculate out these theoretical numbers,
then
> provide a safety factor of 2 to 3 times the needed size and backup pumps.
> (People get made when the sewage pumps fail and it gets backup in their
> basements !!!) I suspect that the Holly pump that Joe has offered has a
> safety factor of well over 2 or 3 times. Two of them sounds better than
one.
>
> This gets me back to my previous question. If the SCCA is placing
> significant restrictions on the performance of the Webers in SCCA EP, can
one
> get better performance out of the other alternative carbs in this
> circumstance. I believe that Kas on more than one occassion as indicated
he
> achieve good SU performance that matched the Webers. If the alternative
carbs
> are not as restircted as the webers, pehaps that is a better alternative
for
> this application.
>
> Cary
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