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240Z SU carbs


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240Z SU's. The instructions on how to tune them make ZERO sense. First of all the mixture "screw*". It isn't a screw* at all, it is a wheel with 5 to 6 detents in it. So telling me to turn it 2 full turns out is impossible. Next, the Carburetor Balancing Adjustment Screws*. They tell you to turn both out then back into 1.5 turns. You CAN'T. You only have ONE Balancing screw*. The screw on the front carb is an Emissions Control Adjusting Screw. It has NO adjustability at all! The remaining 2 screws*, which are near the flange where the carbs bolt to the manifold are called "Idle R.P.M. Adjusting Screws*".....can't use those for sync'ing the carbs. So, if all the information out there asks you to make adjustments you can't.....then what??

carbs 1.jpg

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