The reason is that the distance between the throats is significantly less
than the distance between the intake ports. This means that the inlet
manifold must direct the flow outwards from the carb to the head. The
resulting outward momentum of the air/fuel mixture means that
cylinders 1 & 4 get more fuel (fuel droplets are heavier than the air)
and 2 & 3 run leaner.
Split webers run a straight manifold from the (single operating) throat
directly into the intake.
Mike
p.s. this can add a few HP to a race motor because to be safe on 2 & 3,
you have to run 1 & 4 too rich for max HP.
-----Original Message-----
From: Bill Schooler <schooler@erols.com>
To: Rick Morrison <gofastmg@juno.com>
Cc: mgs@autox.team.net <mgs@autox.team.net>
Date: Thursday, March 19, 1998 11:34 PM
Subject: Re: Beefing up
>Rick Morrison wrote:
>>
>> On Wed, 18 Mar 1998 22:03:00 -0500 Bill Schooler <schooler@erols.com>
>> writes:
>> >Kelvin Dodd wrote:
>> >>
>> >(major snip)
>> >>
>> >(Anyone want to buy a "split Weber"
>> >> manifold for a B, mounts two Weber DCOE on a stock B head, one
>> >barrel of each carb feeds
>> >> one port). It's tough to balance power and economy with the
>> >Webers,
>> >
>> >That's interesting. Since there's only three intake ports. How does
>> >that work?
>>
>> Three intake ports?
>> All my "B" heads have 3 EXHAUST ports and 2 INTAKE ports.
>> Please explain
>>
>> Rick Morrison
>> 72 MGBGT
>> 74 Midget
>>
>
>Uhhhhh.....oops. Meant two, of course. Will restate question. Isn't a
>45 DCOE a dual throat carb? Why use two of them? Honest question - not
>meant to be sarcastic - just would seem like a bit of overkill.
>
>--
>*Bill Schooler *Check the MGCC Wash DC Centre Web Page
>*Woodbridge, VA *http://members.aol.com/mgccwdcc/
>*schooler@erols.com *Editor of The Spark
>*69 B/GT, 53 TD *Web Page Coordinator
>*60 MGA - NEW!
>
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