Move the jet up to weaken, down to richen. You start by screwing it up
until the top of the jet is flush with the top of the bridge, then screw it
down two turns (12 flats) for the nominal starting point.
----- Original Message -----
From: <Greg_Hutmacher@i2.com>
To: <mgs@autox.team.net>
Sent: Thursday, January 31, 2002 4:19 PM
Subject: SU HS4 carb jet setting on 1968 MGB/GT
> On the SU HS4 carbs, looking at the height of the jet inside the jet
> bearing, what is the relationship in terms of rich/lean mixture with the
> jet higher or lower in its bearing? In other words, as I adjust the jet
> upward inside the bearing, does that make the mixture more rich or more
> lean? Is there a general wisdom on what height to start with for a
> nominal mixture setting?
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