To start, I must credit
@4Cruisers for introducing me to the idea of combining the later F-engine type of throttle ('bellcrank' plus a cable-type throttle pedal) with the later 2F-type of air cleaner assemblies and a ball-joint carb throttle, which is native to a ton of Aisan and Aisan-clone carbs out there. This would be a hot idea for anyone trying to rehab an FJ40 with a hacked up history, installing a 2F carb without modifying the firewall on an earlier rig to support the linkage bracket, or finding a better solution than addressing mechanical slop at every point along a torque-rod accelerator linkage. The bellcrank principle might me a cleaner install for carb conversions as well.
Below is the original carb, manifold, spacer, from my '75 FJ40 fitted with a cable-bellcrank setup. Technically speaking, I assume this Toyota part# 78106-90351, correct me if I am wrong, but, a MUD search comes up with one that has the return spring configured differently (toward the front of the truck).
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The goal of this project is to duplicate the above bellcrank and ball-joint push rod. The original Toyota part has some wear, and I'm more interested in a no-slop, positive feel on the gas pedal, and a stack of my own fresh bellcrank clones.
Below, torque-rod-type linkage set-up from early '75 2F tech.
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