westaus29 Posted June 16, 2021 Share Posted June 16, 2021 Looking for a replacement crown wheel and pinion for a 1926 Buick Master The existing unit has a crown wheel with 47 teeth and pinion with 10 teeth. The crown wheel ID is 6-1/2 inches and OD is 11 inches Link to comment Share on other sites More sharing options...
westaus29 Posted March 24, 2022 Author Share Posted March 24, 2022 Still looking for crown wheel and pinion for 1926 Master, but now we also need the differential cage or case as well, or at least the end flange that the crown wheel is rivetted to, as the original crown wheel has been lost and it was still rivetted to the end flange as shown in the picture in the original post Link to comment Share on other sites More sharing options...
Old26Buick Posted March 24, 2022 Share Posted March 24, 2022 I have a complete 27 Standard rear end but think it is differant Link to comment Share on other sites More sharing options...
27donb Posted March 29, 2022 Share Posted March 29, 2022 (edited) From the information I have (for 1927), 114.5" wheelbase (standard six) uses 49-10 ring and pinion, 120" (master six) uses 50-11 and 128" (master six) uses 52-11. What model Buick do you have? It does make sense because often some parts used on a master six for one year are used for standard six the next year, so the newest parts can be used in the master six models for that same year. Maybe a standard six ring and pinion from 1927 would work? Edited March 29, 2022 by 27donb (see edit history) Link to comment Share on other sites More sharing options...
westaus29 Posted March 30, 2022 Author Share Posted March 30, 2022 I have a partial Master parts list and it shows the 26 Master ratio is 4.70 and parts are one year only, except 25 Master has same ring gear, but different pinion. Our club has access to several Standard diffs but they are all smaller diameter ring gear and smaller axle housing. Link to comment Share on other sites More sharing options...
Oldtech Posted March 30, 2022 Share Posted March 30, 2022 Standard and Master will be different. Is 27 the same? Link to comment Share on other sites More sharing options...
ThomasD Posted November 28, 2023 Share Posted November 28, 2023 Hey did you found any spare parts, a dealer? I have the same problem... Link to comment Share on other sites More sharing options...
ThomasD Posted November 28, 2023 Share Posted November 28, 2023 47 teeth and pinion with 10 teeth Link to comment Share on other sites More sharing options...
Leif Holmberg Posted November 29, 2023 Share Posted November 29, 2023 1926 and 1927 Master parts. 2 Link to comment Share on other sites More sharing options...
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