Hi Jeff,
Weber's are tough to tune....a bit of a circular function as you tune
things. However, when you do get them going they're great.
The coughing you are referring to is often referred to as "Spitting" and
occurs when the carbs are burning lean. If this happens when you start
putting the foot down, it could be a number of things but likely either the
idle jet or the chokes are not lined up evenly with the progression tubes.
It is the combination of the idle jet and the progression tubes that control
mixture at the lower rpm.
Before you do anything, make certain that all six chokes are perfectly
synchronized. They have to come off idle and through the progression tubes
together.....very important.
Suggest you get a couple of books on tuning webers.....and some help.
Paul
-----Original Message-----
From: healeys-bounces@autox.team.net [mailto:healeys-bounces@autox.team.net]
On Behalf Of Jeff Pelletier
Sent: Tuesday, August 31, 2010 3:06 PM
To: healeys@autox.team.net
Subject: [Healeys] Jag/weber ??
I know it's a jag question but "their all the same!!" Ive having troble
with a triple weber conversion on a 69 jag.... Im about 30 degress
advanced.. which I think is quite a bit??.. but it the best place it
seems to run with the webers... I was told they like advance... but I
didn't know that much??.. anyway.... the carbs have a slight
(annoying) cough just as you slowly put your foot down... I believe its
coming out of 2 of the 3 carbs... I cant shake it... any ideas....??
idle is OK not great.. little shake... but when u step on it.... LIFE
IS GOOD.... plenty of power and the sound is almost as good as a
Healey!!...
Thanks
Jp
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