By use of a special tappet and Truett & Osborn flywheels the JD engine are possible to run with the modern Harley 4 speed gearbox and the heavy dual chain clutch. Let me know if you are interested of a dual chain flywheel set for JD engines. valand at brokenspoke.se
The 4 5/8 flywheel setup for JD 74" (25-29) engine gives aprox 86" with +0.035 bore, and with the 4 speed gearbox she runs real nice even with a heavy loaded sidecar. There is more options for the one what wants to go further, 4 3/4" and 5" is also viable by special custom production flywheels from Truett & Osborn.
Who will run the first 5" JD stroker in Sweden?
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