David, the inside of the unisyn turns to change the flow. So on the front carb
open the center of the unisyn up so that the reading is not all the way to the
top. Then with the linkage undone, adjust the idle of the back carb so that it's
at the same place. Recheck back and forward a couple of times till the flow is
the same and then lock the linkage trying not to move the setting. Make sure the
throttle is against the linkage and or same gap on both carbs. Recheck after
locking, as often tightening the linkage knocks it out. Then you can set the
mixture. Don't screw the centre in too far to get a reading as then you
constrict
the flow to much.
Alan
On Tue, 18 May 2004 12:33 , 'David Mayer' <celiracer81@hotmail.com> sent:
>I started my '68 Spit Mk3 with dual Su's up ther other day and tried tuning
>them. However, nothing seems to be working! I have the tool that you place
>over the intake and the little ball inside goes up. When i placed it over the
>front carb, the ball goes all the way to the top. When the toll is over the
>rear carb, the little ball stays down at the bottom.
>
>What am i NOT doing that would get these to sync up? The engine still runs
>decent but not as smooth as it could be. Any suggestions?
>
>Thanks,
> David
>
>
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