Malcom
Thats why webers have progression circuits and main circuits. The
progression circuit works at up to approximately 25 degrees buterfly angle
(Those little holes below the brass cap). The main circuit is engaged when
the air velocity through the auxiliary venturis is sufficiently high to
pull fuel through the main jet emulsion tube circuit. You can change when
the main circuit comes in by changung the auxiary vents. 3.5's come in
early 4.5's are common useage and 5.0's bring the mains in later.
You should be able to have the engine running perfectly at all rev ranges,
idle , progression(light load) and wide open throttle.
If you tried using 45's with 40mm chokes you would have more control of
your mixture at lower speeds on the main circuit and make tuning much
easier.
Cheers
Feral Errol.
----------
> From: malcolm cooper <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: Re: Idle mixtures on DCOE weber
> Date: Wednesday, March 15, 2000 4:17
>
> Daniel ,
> I'm pulling my 40's to bits in the next few days to get them polished
> and chromed(if it can be done)I'll report back with a full jet size of
> them if they have numbers on bits.
> but I know they are not std and they have no chokes so what bits are in
> mine might not work in yours?.
> I have tried 45's on it and the 40's are so much better.
> But I think the no chokes is the ticket 40mm all the way through,I think
> the 45's had 32 chokes so that makes them smaller than my 40's?.
>
> anyway running rich is cool nothing wrong with sitting at the lights
> puffing black smoke out,as long as you can clear it on take off.
> I tune them to be running clean at around 100Mph.
> Tune them to be leanlish around town and when you get out on the open
> road at speed you will burn holes in your pistions.
>
> Malcolm
> >
> > Can anyone on the list please help me, the idle mixture on my 16 is
> > too rich, I tried the idle mixture screws but they don't do anything
> > as the jets are the wrong ones they are a 50 something (nothing else
> > on the jet sorry), anyway I was told to put 45f9 jets in, will this
> > fix it or cause more problems, the car was dyno tuned so when its on
> > the main jets it is fine, will changing the idle jets effect this? Or
> > could the problem be something else?
> >
> > Thanks
> >
>
>
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