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Stupidity abounds. The squarebore/spreadbore adapter on the right wouldn’t allow the butterflies to fully open. We had to switch to the open plane adapter on the left. Both adapters used SAE-threaded studs and Allen screws, but the stud nuts were 12 mm and the Allen screw heads were 6 mm. Go figure.
The Ultimate Carb Shootout

 Stupidity abounds. The squarebore/spreadbore adapter on the right wouldn’t allow the butterflies to fully open. We had to switch to the open plane adapter on the left. Both adapters used SAE-threaded studs and Allen screws, but the stud nuts were 12 mm and the Allen screw heads were 6 mm. Go figure.  View Related Article

 

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