Re: Borg Warner Coupler
I believe he is referring to the spline coupler that connects the overdrive output shaft to the stub shaft in the pinion gear sleeve.
The Borg Warner overdrives modified for a Model A are all a product of a cottage industry. All that I have seen had both shafts cut to the same six-point spline as the front of the Model A drive shaft. An off the shelf coupler will fit it. However, I don't know where they can be purchased.
Tom Endy
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