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Re: Weber tunning

To: "de Brebisson, Cyrille (Calculator Division)" <cyrille@hp.com>
Subject: Re: Weber tunning
From: Lester Ewing <lewing@sport.rr.com>
Date: Thu, 18 May 2006 12:17:45 -0500
There is a Haynes manual that will explain it all.  It has info from  
the factory books.  Basically, the emulsion tube effects ,by  
placement of the holes , if you will run richer at different rev  
ranges  (ie can fix a flat spot in fuel delivery) , the main jet  
effects all running (other than idle), the air corrector jet is for  
fine tuning.

To tune start by looking in the book to select a suitable main jet,  
run it, take a plug cut, then adjust main jet size until you are  
close.  Then figure if you seem to have any flat spots, determine rev  
range and drill/fill/exchange emulsion tubes until you have those  
removed, then adjust air corrector until it's perfect.  After that  
you are good to go, NO MOVING PARTS to wear!!

Lester




On May 18, 2006, at 11:37 AM, de Brebisson, Cyrille (Calculator  
Division) wrote:

> Hello,
>
> I have a question about weber, and especially Jet/air corrector and
> emulsion tube matching...
>
> If I am not wrong, the aim of these 3 components is to meter the fuel
> (jet) and atomize it (emulsion tube) with the right amount of air (air
> corrector) before insertion in the air stream for best combustion  
> in the
> chamber.
>
> This means that the 3 components must be paired properly (for  
> example, a
> huge jet with little air correction will not provide a good
> atomization)...
>
> Does anyone knows where to get information on what can be paired with
> what as I think that I am having some issues there...
>
> Just so you know, comments such as "get some proper SU" will not help
> me...
>
> cyrille




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