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CB750 / Re: What's this all about ??
« Last post by AshimotoK0 on May 19, 2024, 08:41:57 AM »That would mean you could regrind a crank, does anybody know if the journals are hardened cos i dont
If needing treatment after grind, process like this available https://aalberts-st-heat.co.uk/tufftride-qpq#:~:text=The%20Tufftride%C2%AE%20process%20of,the%20characteristic%20black%20surface%20finish. Suitable for materials that can't accept nitride treatment.
My mate Graham Curtis refurbishes Honda cranks of the pressed together variety (must have done at least 100) and I asked him about the depth of hardening on those. He reckons it's around 2mm on the crankpins ... yes I know it's not a plain bearing crank but gives an indication. He told me the crank parts are copper coated in areas where the parts are not hardened as part of the hardening process.